Page 1
OWNER’S MANUAL
MANUEL DU PROPRIÉTAIRE
USO E MANUTENZIONE
INSTRUKTIONSBOK
OMISTAJAN KÄSIKIRJA
EIERHÅNDBOK
E
F
I
S
SF
N
E
F
S
SF
N
Read this manual carefully before operating this vehicle.
Il convient de lire attentivement ce manuel avant la première utilisation du véhicule.
I
Leggere attentamente questo manuale prima di utilizzare questo veicolo.
Läs den här instruktionsboken noga innan snöskotern används.
Lue tämä käsikirja huolellisesti ennen moottorikelkan käyttöä.
Les denne håndboken nøye før du tar kjøretøyet i bruk.
PZ50Y
PZ50RTY
PZ50GTY
PZ50MTY
PZ50VTY
PZ50MPY
8GK-28199-S2
Page 2
YAMAHA MOTOR CO., LTD.
PRINTED IN JAPAN
2008.05-0.8×2 CR
PRINTED ON RECYCLED PAPER
IMPRIMÉ SUR PAPIER RECYCLÉ
STAMPATO SU CARTA RICICLATA
TRYCKT PÅ ÅTERVUNNET PAPPER
PAINETTU UUSIOPAPERILLE
TRYKKET PÅ RESIRKULERT PAPIR
Page 3
OWNER’S MANUAL
Read this manual carefully
before operating this vehicle.
PZ50Y
PZ50RTY
PZ50GTY
PZ50MTY
PZ50VTY
PZ50MPY
8GK-28199-S2-E0
Page 4
ESU12546
Read this manual carefully before operating this vehicle. This manual
should stay with this vehicle if it is sold.
EC Declaration of Conformity
conforming to Directive 98/37/
We, YAMAHA MOTOR CO., LTD. 2500 Shingai, Iwata, Japan,
declare in sole responsibility, that the product
PZ50RTY(JYE8GN00
PZ50MTY(JYE8GP00
PZ50MPY(JYE8GR00
PZ50VTY(JYE8GJ00∗9A005800 ~
to which this declaration applies, conforms to the essential health
and safety requirements of Directive 98
(
)
If applicable
and to the other relevant Directives of EEC
(
/
or number and date of issue of the other Directives of EEC
Title and
(
)
If applicable
To effect correct
stated in the Directives of EEC, the
specifications were consulted:
(
Title and
application
/
or number and date of issue of standards and/or specifications
(
Make, model
89/336/EEC or 2004/108/EC
of the
– – – – – –
EC
9A007900 ~
∗
9A009500 ~
∗
9A006300 ~
∗
)
/37/
essential
following-standards and/or
)
)
)
)
EC,
)
health
and safety requirements
technical
)
Authorized Representative
YAMAHA MOTOR EUROPE N.V.
Koolhovenlaan 101, 1119NC Schiphol-Rijk, The Netherlands
Signature
General Manager
RV Engineering Division
RV Company
Date of Issue
Shinya Shimada
12 February, 2008
Page 5
ESU10131
Congratulations on your purchase of a
Yamaha snowmobile. This model is the result
of Yamaha’s vast experience in the production of fine sporting and touring snowmobiles.
It represents the high degree of craftsmanship
and reliability that have made Yamaha a leader in these fields.
This manual will give you an understanding of
the operation, inspection, and basic maintenance of this snowmobile. If you have any
questions concerning the operation or maintenance of your snowmobile, please consult a
Yamaha dealer.
Yamaha continually seeks advancements in
product design and quality. Therefore, while
this manual contains the most current product
information available at the time of printing,
there may be minor discrepancies between
your snowmobile and this manual. If there is
any question concerning this manual, please
consult a Yamaha dealer.
EWS00670
WARNING
Please read this manual carefully before
operating this snowmobile. Do not attempt
to operate this snowmobile until you have
attained adequate knowledge of its controls and operating features.
Regular inspections and careful maintenance, along with good operating techniques, will help ensure that you safely
enjoy the capabilities and reliability of this
snowmobile.
Introduction
PZ50Y
PZ50RTY
PZ50GTY
PZ50MTY
PZ50VTY
PZ50MPY
OWNER’S MANUAL
©2008 by Yamaha Motor Co., Ltd.
1st Edition, April 2008
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan.
Page 6
Important manual information
ESU10151
Particularly important information is distinguished in this manual by the following notations.
This is the safety alert symbol. It is used
to alert you to potential personal injury hazards. Obey all safety messages that follow
this symbol to avoid possible injury or death.
EWS00021
WARNING
A WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
ECS00011
NOTICE
A NOTICE indicates special precautions
that must be taken to avoid damage to the
snowmobile or other property.
TIP
A TIP provides key information to make procedures easier or clearer.
Page 7
Contents
Location of the important labels ..... 1
Safety information ............................ 8
Description ...................................... 10
Control functions ............................ 13
Main switch .................................. 13
Throttle lever ................................ 13
Engine overheating prevention
system ....................................... 13
Throttle override system
(T.O.R.S.) .................................. 13
Speedometer unit ......................... 14
High beam indicator light .............. 16
Low coolant temperature indicator
light ............................................ 16
Knock control system “KCS”
indicator light ............................. 16
Drive “D” and reverse “R”
indicator lights (PZ50RT /
PZ50GT / PZ50MT /
PZ50VT / PZ50MP) ................... 17
Fuel meter and grip/thumb
warmer level indicator ............... 17
Fuel level warning indicator .......... 18
Oil level warning indicator ............ 19
Coolant temperature warning
indicator ..................................... 19
Self-diagnosis device ................... 19
Drive select switch (PZ50RT /
PZ50GT / PZ50MT / PZ50VT /
PZ50MP) ................................... 20
Engine stop switch ....................... 20
Headlight beam switch
“LIGHTS” ................................... 21
Grip/thumb warmer adjustment
switch ........................................ 21
Auxiliary DC jack (PZ50VT /
PZ50MP) ................................... 21
Brake lever ................................... 22
Parking brake lever ...................... 22
Shroud latches (PZ50VT /
PZ50MP) ................................... 22
Shroud and covers ....................... 23
Drive guard .................................. 24
V-belt holder (PZ50VT /
PZ50MP) ................................... 24
Passenger grip warmer switch
(PZ50VT) .................................. 25
Backrest [PZ50VT / PZ50MP
(FIN)(SWE)(RUS)] .................... 25
Storage pouch .............................. 25
Rear carrier (PZ50VT /
PZ50MP) ................................... 26
Tow hitch [PZ50VT (CAN) /
PZ50MP (CAN)(RUS)] and
tow hitch bracket [PZ50VT
(FIN)(SWE) / PZ50MP
(FIN)(SWE)] .............................. 27
Fuel .............................................. 27
Suspension .................................. 29
Pre-operation checks ..................... 38
Pre-operation check list ............... 38
Operation ......................................... 40
Starting the engine ....................... 40
Break-in ........................................ 41
Riding your snowmobile ............... 41
Maximizing drive track life ............ 45
Strap (PZ50MT) ........................... 45
Driving .......................................... 46
Stopping the engine ..................... 47
Transporting ................................. 47
Periodic maintenance and
adjustment....................................... 49
Periodic maintenance chart for
the emission control system ..... 49
General maintenance and
lubrication chart ........................ 51
Tool kit ......................................... 53
Page 8
Contents
Removing and installing
the shroud and covers ............... 53
Checking the spark plugs ............. 56
Adjusting the engine idling
speed ........................................ 57
Adjusting the throttle cable free
play (PZ50 / PZ50RT /
PZ50GT / PZ50MT) ................... 58
Checking the throttle cable free
play (PZ50VT / PZ50MP) .......... 58
Checking the throttle override
system (T.O.R.S.) ..................... 58
Checking the air filter ................... 59
High-altitude settings .................... 60
Valve clearance ............................ 60
Engine oil and oil filter cartridge ... 60
Cooling system ............................. 64
V-belt ............................................ 65
Drive chain housing ...................... 67
Brake and parking brake .............. 68
Skis and ski runners ..................... 70
Steering system ........................... 71
Drive track and slide runners ....... 72
High-profile pattern drive track ..... 74
Lubrication .................................... 75
Replacing a headlight bulb ........... 75
Adjusting the headlight beams ..... 76
Fittings and fasteners ................... 77
Battery .......................................... 77
Replacing a fuse .......................... 78
Troubleshooting ............................. 80
Storage ............................................ 83
Specifications ................................. 85
Consumer information.................... 88
Identification number records ....... 88
WARRANTY.................................. 88
Page 9
Location of the important labels
ESU12674
Read and understand all of the labels on your vehicle. They contain important information for
safe and proper operation of your vehicle. Never remove any labels from your vehicle. If a label
becomes difficult to read or comes off, a replacement label is available from your Yamaha dealer.
For CANADA
PZ50
PZ50RT/PZ50GT/PZ50MT/PZ50VT/PZ50MP
4
910
2
1
2
9
7
3
10
8
1
6
5
12
1
Page 10
Location of the important labels
1 PZ50
1 PZ50RT/PZ50GT/PZ50MT/PZ50MP
1 PZ50VT
2
Page 11
Location of the important labels
4 PZ50RT
This unit contains high pressure nitrogen gas.
Mishandling can cause explosion.
• Read owner’s manual for instructions.
• Do not incinerate, puncture or open.
Cette unité contient de I’azote à haute pression.
Une mauvaise manipulation peut entraîner d’explosion.
• Voir le manuel d’utilisateur pour les instructions.
• Ne pas brûler ni perforer ni ouvrir.
WARNING
AVERTISSEMENT
6 PZ50MT
NOTICE ATTENTION
8GT-F2259-50
8HA-2815M-E0
3
Page 12
Location of the important labels
7 PZ50RT/PZ50GT/PZ50MT/PZ50VT/PZ50MP
NOTICE
8ET-2815K-00
8 PZ50RT/PZ50GT/PZ50MT/PZ50VT/PZ50MP
ATTENTION
8ET-2815K-10
9 PZ50/PZ50RT/PZ50GT/PZ50MT/PZ50MP
10 PZ50/PZ50RT/PZ50GT/PZ50MT/PZ50MP
11 PZ50MT
12 PZ50VT/PZ50MP
LOAD LIMIT / CHARGE LIMITE
20kg {44lbs}
8FM-24897-01
4
Page 13
For EUROPE
1
Location of the important labels
9 810
2 3 PZ50MT/PZ50VT/PZ50MP
4
4 PZ50RT
This unit contains high pressure nitrogen gas.
Mishandling can cause explosion.
• Read owner’s manual for instructions.
• Do not incinerate, puncture or open.
Cette unité contient de I’azote à haute pression.
Une mauvaise manipulation peut entraîner d’explosion.
• Voir le manuel d’utilisateur pour les instructions.
• Ne pas brûler ni perforer ni ouvrir.
WARNING
AVERTISSEMENT
8GT-22259-50
5
Page 14
Location of the important labels
5 PZ50MT
VIKTIGT MUISTA
8HA-2815M-S0
6 PZ50MT
7 PZ50MT
8 9 PZ50VT/PZ50MP
MAX.BELASTNING/RASKAIN TAAKKA
20kg {44lbs}
2008
10 PZ50VT/PZ50MP
8DM-2155B-80
MAX. TOWING FORCE (HOOK) : 1176 N
MAX. VERTICAL FORCE (HOOK) : 147 N
6
8FM-24897-11
8DM-2191C-00
Page 15
For RUSSIA
1
Location of the important labels
7 6 58
8GR-77761-R1
2
3
4
5
6
2008
8DM-2155B-80
78
MAX.BELASTNING/RASKAIN TAAKKA
20kg {44lbs}
8FM-24897-11
MAX. TOWING FORCE (HOOK) : 1176 N
MAX. VERTICAL FORCE (HOOK) : 147 N
8DM-2191C-00
7
Page 16
Safety information
ESU10193
As the vehicle’s owner, you are responsible
for the safe and proper operation of your
snowmobile. When you ride your snowmobile, you must know and use the following for
your safety. Severe injury or death may result
if you ignore any of the following.
Before you operate your snowmobile
● Read the Owner’s Manual and all labels.
Become familiar with all of the operating
controls and their function. Consult a
Yamaha dealer about any control or function you do not understand.
● Wear protective clothing. Wear an ap-
proved helmet, and a face shield or goggles. Also, wear a good quality snowmobile
suit, boots, and a pair of gloves or mittens
that will permit use of your thumbs and fingers for operation of the controls.
● Apply the parking brake before starting the
engine. Never drive the snowmobile with
the parking brake applied. This may overheat the brake disc and reduce braking ability.
While using your snowmobile
● This snowmobile was not manufactured for
use on public streets, roads, or highways.
Such use is prohibited by law, and you
could collide with another vehicle.
● PZ50, PZ50RT, PZ50GT, PZ50MT and
PZ50MP (CAN) are designed to carry the
OPERATOR ONLY. Passengers are prohibited. Carrying a passenger can cause
loss of control.
● Do not operate the snowmobile after or
while drinking alcohol or taking drugs. Your
ability to operate the snowmobile is reduced by the influence of alcohol or drugs.
Prepare your snowmobile
● Perform the pre-operation checks each
time you use the vehicle to make sure it is
in safe operating condition. Failure to inspect or maintain the vehicle properly increases the possibility of an accident or
equipment damage. See page 38 for a list
of pre-operation checks.
8
● Be careful where you ride. There may be
obstacles hidden beneath the snow. Stay
on established trails to minimize your exposure to hazards. Ride slowly and cautiously
when you ride off of established trails. Hitting a rock or stump, or running into wires
could cause an accident and injury.
● This snowmobile is not designed for use on
surfaces other than snow or ice. Use on dirt,
sand, grass, rocks, or bare pavement may
cause loss of control and may damage the
snowmobile.
● Always ride with other snowmobilers when
going on a ride. You may need help if you
run out of fuel, have an accident, or damage
your snowmobile.
Page 17
Safety information
● Many surfaces such as ice and hardpacked
snow require much longer stopping distances. Be alert, plan ahead and begin decelerating early. The best braking method on
most surfaces is to release the throttle and
apply the brake gently—not suddenly.
Avoid carbon monoxide poisoning
All engine exhaust contains carbon monoxide, a deadly gas. Breathing carbon monoxide
can cause headaches, dizziness, drowsiness,
nausea, confusion, and eventually death.
Carbon monoxide is a colorless, odorless,
tasteless gas which may be present even if
you do not see or smell any engine exhaust.
Deadly levels of carbon monoxide can collect
rapidly and you can quickly be overcome and
be unable to save yourself. Also, deadly levels of carbon monoxide can linger for hours or
days in enclosed or poorly-ventilated areas. If
you experience any symptoms of carbon
monoxide poisoning, leave the area immediately, get fresh air, and SEEK MEDICAL
TREATMENT.
● Do not run the engine indoors. Even if you
try to ventilate engine exhaust with fans or
open windows and doors, carbon monoxide
can rapidly reach dangerous levels.
● Do not run the engine in poorly ventilated or
partially enclosed areas such as barns, garages, or carports.
● Do not run the engine outdoors where en-
gine exhaust can be drawn into a building
through openings such as windows and
doors.
Genuine Yamaha Accessories
Choosing accessories for your snowmobile is
an important decision. Genuine Yamaha Accessories, which are available only from a
Yamaha dealer, have been designed, tested,
and approved by Yamaha for use on your
snowmobile. Many companies with no connection to Yamaha manufacture parts and ac-
cessories or offer other modifications for
Yamaha vehicles. Yamaha is not in a position
to test the products that these aftermarket
companies produce. Therefore, Yamaha can
neither endorse nor recommend the use of
accessories not sold by Yamaha or modifications not specifically recommended by
Yamaha, even if sold and installed by a
Yamaha dealer.
Maintenance and storage
● When laying the snowmobile on its side for
maintenance, use a suitable stand to keep
it in a stable and level position.
● Do not leave the snowmobile on its left side
for an extended period of time. Fuel may
leak out from the fuel breather hose.
● Do not allow anyone to stand behind the
snowmobile when starting, inspecting, or
adjusting the snowmobile. A broken track,
track fittings, or debris thrown by the track
could be dangerous to the operator or bystanders.
● Modifications made to the snowmobile not
approved by Yamaha, or the removal of
original equipment may render your snowmobile unsafe for use, which may cause severe personal injury. Modifications may
also make the snowmobile illegal to use.
● Never store the snowmobile with fuel in the
fuel tank inside a building where ignition
sources are present such as hot water and
space heaters, an open flame, sparks,
clothes dryers, and the like. Allow the engine to cool off before storing the snowmobile in an enclosed space.
9
Page 18
Description
ESU10260
PZ50
1,2 3 4,5,6,7,8 14 14
161718
PZ50MP (CAN)
14
13 14 15
PZ50GT PZ50MP (FIN)(SWE)(RUS)/PZ50VT
14
1. Storage pouch
2. Tool kit
3. Air filter
4. Oil filler cap
5. Battery
6. Main fuse
7. Fuse box
8. Coolant reservoir
9. V-belt holder (PZ50VT / PZ50MP)
10. Strap (PZ50MT)
11. Passenger grip warmer switch (PZ50VT)
10
12. Backrest [PZ50VT / PZ50MP
(FIN)(SWE)(RUS)]
13. Rear carrier (PZ50VT / PZ50MP)
14. Tail/brake light
15. Tow hitch [PZ50VT (CAN) / PZ50MP
(CAN)(RUS)]/tow hitch bracket [PZ50VT
(FIN)(SWE) / PZ50MP (FIN)(SWE)]
16. Slide rail suspension
17. Drive track
18. Idle adjusting screw
13 14
Page 19
Description
PZ50 PZ50RT/PZ50GT/PZ50MT PZ50VT/PZ50MP
9
1. Brake lever
2. Parking brake lever
3. Grip/thumb warmer adjustment switch
4. Headlight beam switch
5. Speedometer unit
6. Engine stop switch
7. Throttle lever
8. Shroud latch (PZ50VT / PZ50MP)
9. Main switch
10. Auxiliary DC jack (PZ50VT / PZ50MP)
11. “RESET” button
12. “SELECT” button
13. Fuel level warning indicator
14. Oil level warning indicator
15. Coolant temperature warning indicator
16. Self-diagnosis warning indicator
17. Speedometer
18. Odometer/tripmeter/engine speed meter
19. Fuel meter and grip/thumb warmer level indicator
20. Fuel meter indicator
21. Drive “D” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
22. Reverse “R” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
23. Drive select switch (PZ50RT / PZ50GT /
PZ50MT / PZ50VT / PZ50MP)
24. Knock control system “KCS” indicator light
25. High beam indicator light
26. Low coolant temperature indicator light
27. Warning light
28. Grip warmer indicator
29. Thumb warmer indicator
11
Page 20
Description
TIP
● The snowmobile you have purchased may differ slightly from those shown in the figures of
this manual.
● Design and specifications are subjected to change without notice.
12
Page 21
ESU10292
Main switch
The main switch controls the ignition and
lighting systems. The various positions are
described below.
1. Off
2. On
3. Start
Off
The ignition circuit is switched off.
The key can be removed only in this position.
On
The ignition circuit is switched on.
Start
The starting circuit is switched on.
The starter motor cranks the engine.
NOTICE: Release the switch immediately
after the engine starts.
[ECS00021]
TIP
The headlights and taillight come on after the
engine is started.
ESU10312
Throttle lever
Once the engine is running cleanly, squeezing the throttle lever will increase the engine
speed and cause engagement of the drive
train. Regulate the speed of the snowmobile
by varying the throttle position. Because the
throttle is spring-loaded, the snowmobile will
decelerate, and the engine will return to idle
when it is released.
Control functions
1. Throttle lever
ESU10321
Engine overheating prevention
system
This model is equipped with a system, which
prevents overheating when the engine is
idling.
When the engine has been idling for 3 minutes or longer and the coolant temperature
has risen above 100 °C (212 °F), the engine
automatically stops to prevent overheating.
TIP
The engine can be started after it stops.
ESU10345
Throttle override system
(T.O.R.S.)
EWS00041
WARNING
If the T.O.R.S. is activated, make sure that
the cause of the malfunction has been corrected and that the engine can be operated
without a problem before restarting the
engine. Continuing to operate with a malfunction could cause loss of control or
damage.
If the throttle bodies or throttle cable malfunctions during operation, the T.O.R.S. will operate when the throttle lever is released.
The T.O.R.S. is designed to override the fuel
injection and limit the engine speed to less
than the clutch engagement speed if the throt-
13
Page 22
Control functions
tle valves fail to return to the idle position
when the throttle lever is released. (See page
85 for the clutch engagement speed.)
Idling /
starting
Throttle
switch
Throttle
position
sensor
Engine Run Run
Off On Off
Closed Open Open
Running Trouble
T. O. R . S .
will oper-
ate.
Idling / starting
1. Throttle position sensor (throttle valve
closed position)
2. Throttle switch (off)
3. Throttle cable
Running
Trouble
1. Throttle position sensor (throttle valve open
position)
2. Throttle switch (off)
TIP
● If the T.O.R.S. is activated, the warning light
and self-diagnosis warning indicator will
flash, and the two-digit code “84” will flash in
the meter display.
● The T.O.R.S. monitors the condition of the
throttle position sensor, speedometer assembly, and speed sensor, and will operate
if any of the monitored items is disconnected or is malfunctioning.
1. Throttle position sensor (throttle valve open
position)
2. Throttle switch (on)
14
1. Warning light “”
2. Self-diagnosis warning indicator “”
3. Two-digit code “84”
ESU10392
Speedometer unit
The speedometer unit is equipped with the
following:
Page 23
● a digital speedometer (which shows the
riding speed)
● an odometer (which shows the total dis-
tance traveled)
● a tripmeter (which shows the distance trav-
eled since it was last set to zero)
● an engine speed meter (which shows the
engine speed; not for use while riding)
● warning indicators (which show self-diag-
nosis, coolant temperature, fuel level, and
oil level warnings)
● indicator lights [which show high beam, low
coolant temperature, transmission position
(PZ50RT / PZ50GT / PZ50MT / PZ50VT /
PZ50MP), and knock control system conditions]
● a warning light (which shows warnings to-
gether with the warning indicators)
● a fuel meter (which shows the fuel remain-
ing in the fuel tank)
● a grip/thumb warmer level indicator (which
shows the grip warmer or the thumb warm-
er level)
When the key is turned to the on position, the
warning light, the low coolant temperature indicator light, the knock control system “KCS”
indicator light, the drive “D” and reverse “R” in-
dicator lights (PZ50RT / PZ50GT / PZ50MT /
PZ50VT / PZ50MP), and all segments of the
meter display come on and go off.
The grip warmer level is initially displayed for
5 seconds, then the display switches to the
fuel meter.
Control functions
1. Warning light “”
2. Low coolant temperature indicator
light “”
3. Knock control system “KCS” indicator light
4. Drive “D” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
5. Reverse “R” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
6. Meter display
Odometer, tripmeter, and engine
speed meter modes
Pushing the “SELECT” button switches the
display between the odometer mode “ODO”,
tripmeter mode “TRIP”, and engine speed
meter mode “r/min”.
To reset the tripmeter, push the “RESET” button for at least 1 second while the tripmeter is
displayed.
1. “SELECT” button
2. “RESET” button
15
Page 24
Control functions
TIP
● To switch the speedometer, odometer, and
tripmeter displays between kilometers and
miles, select the odometer mode “ODO”,
and then push the “SELECT” button for at
least 10 seconds while the snowmobile is
stopped.
● Use the engine speed meter only when
checking the snowmobile and performing
basic maintenance. The engine speed
meter should not be used while riding the
snowmobile since the reading will vary from
the actual engine speed.
ESU10410
High beam indicator light “”
The high beam indicator light comes on when
the high beams of the headlights are switched
on. (See page 21 for headlight beam switch
operation.)
1. Low coolant temperature indicator
light “”
The snowmobile can be operated normally after the indicator light goes off.
TIP
Drive the snowmobile at low speeds when the
low coolant temperature indicator light is on. If
the engine speed is too high, maximum engine speed is reduced to protect the engine.
ESU10500
Knock control system “KCS”
indicator light
This snowmobile is equipped with a system
which detects engine knocking in order to protect the engine from damage.
The knock control system “KCS” indicator
light comes on if knocking is detected, then
flashes if the knocking increases.
1. High beam indicator light “”
ESU10472
Low coolant temperature indicator light “”
The low coolant temperature indicator light
comes on when the coolant temperature is
low and informs the rider that the snowmobile
should be warmed up. After the engine is
started, warm it up until the indicator light
goes off.
16
1. Knock control system “KCS” indicator light
After the knocking has stopped, the knock
control system “KCS” indicator light goes off.
Page 25
ECS00030
NOTICE
● If the knock control system “KCS” indi-
cator light comes on, the fuel tank may
not have been filled with the recommended fuel. Reduce the engine speed
to 6000 r/min or less. As soon as possible, stop the engine, let it cool sufficiently, and then drain the fuel and refuel with
the recommended fuel.
● If the knock control system “KCS” indi-
cator light is flashing, have a Yamaha
dealer inspect the snowmobile as soon
as possible.
TIP
To help prevent knocking, use premium unleaded gasoline only. (See page 27 for more
details.)
ESU10492
Drive “D” and reverse “R” indi-
cator lights (PZ50RT / PZ50GT /
PZ50MT / PZ50VT / PZ50MP)
These indicator lights show whether the
snowmobile is shifted into drive or reverse.
The drive “D” indicator light comes on when
the transmission is in drive (forward).
The reverse “R” indicator light comes on when
the transmission is in reverse.
Control functions
1. Drive “D” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
2. Reverse “R” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
The snowmobile can be shifted into drive or
reverse by pushing the drive select switch.
(See page 20 for drive select switch operation.)
ESU10433
Fuel meter and grip/thumb
warmer level indicator
The fuel meter and grip/thumb warmer level
indicator have eight segments which show
the amount of fuel remaining in the fuel tank,
the grip warmer level, or the thumb warmer
level.
1. Fuel meter and grip/thumb warmer level indicator
17
Page 26
Control functions
Fuel meter
The display segments of the fuel meter disappear towards “E” (Empty) as the fuel level decreases. When only one segment is left near
“E”, the fuel level warning indicator and the
warning light come on.
1. Fuel level warning indicator “”
2. Warning light “”
If the fuel level warning indicator and the
warning light come on, refuel as soon as possible.
TIP
The snowmobile must be stopped on a level
surface to obtain an accurate fuel meter reading, since the reading changes according to
the movement and inclination of the snowmobile.
Grip/thumb warmer level indicator
When the grip warmer side of the grip/thumb
warmer adjustment switch is pressed, the grip
warmer indicator comes on and the display
switches to the grip warmer level.
When the thumb warmer side of the
grip/thumb warmer adjustment switch is
pressed, the thumb warmer indicator comes
on and the display switches to the thumb
warmer level.
See “Grip/thumb warmer adjustment switch”
on page 21 for detailed information.
1. Grip/thumb warmer adjustment switch
1. Grip warmer indicator “”
2. Thumb warmer indicator “”
TIP
● The grip/thumb warmer level is displayed
for 5 seconds after releasing the grip/thumb
warmer adjustment switch, then the display
switches to the fuel meter.
● When the engine is started, the grip/thumb
warmer levels are set to the levels selected
when the engine was last stopped.
ESU10451
Fuel level warning
indicator “”
The fuel level warning indicator indicates a
malfunctioning sensor, disconnected coupler,
broken lead, or short circuit when detected by
the self-diagnosis device of the snowmobile.
18
Page 27
Control functions
The fuel level warning indicator, warning light,
and all segments of the fuel meter warn the
rider of the above problems by flashing continuously.
If this occurs, have a Yamaha dealer inspect
the snowmobile as soon as possible.
1. Fuel level warning indicator “”
2. Warning light “”
3. Fuel meter
ESU10460
Oil level warning indicator “”
The oil level warning indicator and the warning light come on when the engine oil level is
low.
If the oil level warning indicator and the warning light go off, the engine oil level is sufficient,
however it is getting low. Add engine oil as
soon as possible.
If the oil level warning indicator and the warning light do not go off, check the engine oil level in the oil tank (see page 60 for engine oil
level checking procedures), and add engine
oil if necessary.
ESU10512
Coolant temperature warning
indicator “”
If the engine overheats, the coolant temperature warning indicator and the warning light
come on. When this occurs, stop the engine
immediately and allow the engine to cool
down, and then check the coolant level in the
coolant reservoir. (See page 64 for checking
procedures.)
1. Oil level warning indicator “”
2. Warning light “”
If the oil level warning indicator and the warning light come on, place the snowmobile on a
level surface and allow it to idle for one
minute.
1. Coolant temperature warning indicator “”
2. Warning light “”
ECS00041
NOTICE
Do not continue to operate the engine if it
is overheating.
ESU12682
Self-diagnosis device
This model is equipped with a self-diagnosis
device for various electrical circuits.
If a problem is detected in any of those circuits, the warning light and the self-diagnosis
warning indicator will flash, and a two-digit er-
19
Page 28
Control functions
ror code will flash slowly in the tripmeter/odometer display. Note the error code,
and then have a Yamaha dealer inspect the
snowmobile as soon as possible. NOTICE:
Do not continue to operate the engine
longer than necessary if there is an error
code to avoid possible engine damage.
[ECS00820]
1. Warning light “”
2. Self-diagnosis warning indicator “”
3. Two-digit error code
ESU10544
Drive select switch (PZ50RT /
PZ50GT / PZ50MT / PZ50VT /
PZ50MP)
The drive select switch is used to shift the
snowmobile into drive or reverse. After coming to a complete stop, press the drive select
switch.
The drive “D” indicator light comes on when
the transmission is in drive (forward).
The reverse “R” indicator light comes on when
the transmission is in reverse.
1. Drive select switch (PZ50RT / PZ50GT /
PZ50MT / PZ50VT / PZ50MP)
2. Drive “D” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
3. Reverse “R” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
ECS00052
NOTICE
Do not use the drive select switch while
the snowmobile is moving. Otherwise, the
drive train could be damaged.
ESU10531
Engine stop switch “”
The engine stop switch is used to stop the engine in an emergency. Simply push the stop
switch to stop the engine. To start the engine,
pull the stop switch and proceed with starting
the engine. (See page 40 for engine starting
procedures.)
20
1. Engine stop switch “”
During the first few rides, practice using the
stop switch so that you can react quickly in an
emergency.
Page 29
Control functions
ESU10661
Headlight beam switch
“LIGHTS”
Push the headlight beam switch to change the
headlight to high beam “HI” or to low beam
“LO”.
1. Headlight beam switch “LIGHTS”
2. High beam “HI”
3. Low beam “LO”
ESU10674
Grip/thumb warmer adjustment
switch
The grip/thumb warmer adjustment switch
controls the electrically heated handlebar
grips and throttle lever.
To lower the temperature
Continue to press the switch until the temperature level returns to the minimum level, and
then raise the temperature to the desired level.
See “Fuel meter and grip/thumb warmer level
indicator” on page 17 for detailed information.
ESU10691
Auxiliary DC jack (PZ50VT /
PZ50MP)
The auxiliary DC jack is located in the front
panel and can be used for accessories.
TIP
The auxiliary DC jack cannot be used if the
engine is not running.
To use the auxiliary DC jack
1. Start the engine.
2. Open the auxiliary DC jack cap, and then
insert the accessory power plug into the
jack.
1. Grip/thumb warmer adjustment switch
To raise the temperature
To raise the grip warmer temperature, press
the “” side of the switch. To raise the thumb
warmer temperature, press the “” side of
the switch.
1. Auxiliary DC jack cap
2. Auxiliary DC jack
3. After using the auxiliary DC jack, be sure
to remove the accessory power plug from
the jack and to close the auxiliary DC jack
cap.
21
Page 30
Control functions
ECS00120
NOTICE
● Do not use accessories requiring more
than the maximum rated capacity for the
auxiliary DC jack. This may overload the
circuit and cause the fuse to blow. (See
page 78 for the specified amperage.)
● Do not use an automotive cigarette light-
er or other accessory with a plug that
gets hot because the jack can be damaged.
Maximum rated capacity:
DC 12 V, 2.5 A (30 W)
ESU10550
Brake lever
The snowmobile is stopped by braking the entire drive system.
Squeeze the brake lever towards the handlebar grip to stop the snowmobile.
ESU10581
Parking brake lever
When parking the snowmobile or starting the
engine, apply the parking brake by moving the
parking brake lever to the left.
1. Parking brake lever
To release the parking brake, move the parking brake lever to the right.
1. Brake lever
TIP
When the brake lever is operated, the brake
light will illuminate.
ECS00060
NOTICE
Make sure that the brake lever end does
not project out over the handlebar end.
This will help prevent brake lever damage
when the snowmobile is placed on its side
for service.
22
ESU10712
Shroud latches (PZ50VT /
PZ50MP)
EWS00082
WARNING
Be sure the shroud is secured before operation. A loose shroud could move and
cause loss of control.
To open the shroud, unhook the shroud latches, and then slowly raise the shroud forward
until it stops. When closing the shroud, slowly
lower it to its home position, and then hook the
shroud latches.
Page 31
Control functions
1. Shroud latch
ECS00140
NOTICE
Make sure that all cables and wires are in
place when closing the shroud.
ESU10731
Shroud and covers
Securely fasten the shroud and covers before
operating the snowmobile. (See page 53 for
removal and installation procedures.)
PZ50 / PZ50RT / PZ50GT / PZ50MT
1. Air filter case cover
2. Front cover
1. Top cover
2. Right upper cover
3. Right side cover
4. Right lower cover
1. Left side cover
PZ50VT / PZ50MP
1. Shroud
2. Left upper cover
3. Left side cover
23
Page 32
Control functions
1. Right upper cover
2. Right side cover
3. Right lower cover
1. Air filter case cover
ESU10751
Drive guard
EWS00401
WARNING
● Coming in contact with the rotating V-
belt or clutch parts can cause severe injury or death. Never run the engine with
the drive guard removed.
● Make sure that the drive guard is tight-
ened securely before operating the
snowmobile to protect against severe
injury or death from a broken V-belt or
other part should it come off the snowmobile while it is in operation.
ECS00830
NOTICE
Never run the engine with the V-belt removed. Clutch components can be damaged.
The drive guard is designed to cover the Vbelt clutch and V-belt in case parts break or
come loose.
1. Drive guard
ESU10770
V-belt holder (PZ50VT /
PZ50MP)
Keep a spare V-belt for emergency use by
placing it into the V-belt holder provided.
1. V-belt holder
ECS00190
NOTICE
Make sure that the V-belt is installed securely in the holder.
24
Page 33
ESU10680
Passenger grip warmer switch
(PZ50VT)
The passenger grip warmer switch controls
the electrically heated passenger grips.
Control functions
3. Tighten the bolts and close the zipper.
Backrest bolt tightening torque:
23 Nm (2.3 m·kgf, 17 ft·lbf)
1. Passenger grip warmer switch
2. Off
3. “HI” (high)
4. “LO” (low)
ESU10801
Backrest [PZ50VT / PZ50MP
(FIN)(SWE)(RUS)]
The backrest is adjustable.
To adjust the backrest angle
1. Open the backrest zipper and loosen the
backrest bolts.
1. Backrest bolt
2. Adjust the backrest angle to the desired
position.
EWS00131
WARNING
Do not sit on the backrest. Otherwise, you
could lose your balance, fall, and be injured.
ESU12991
Storage pouch
The storage pouch is located behind the front
bumper. Use the storage pouch to store the
tool kit, spare parts, such as the V-belt (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or other small
items.
1. Storage pouch
To remove the storage pouch
Unfasten the storage pouch upper and lower
buckles, and then pull the storage pouch off
as shown.
25
Page 34
Control functions
1. Storage pouch buckle
To install the storage pouch
1. Fasten the storage pouch upper buckles.
2. Pass the storage pouch lower strap between the bracket and the frame, and
then fasten the buckle to secure the
pouch.
TIP
When storing a spare V-belt in the storage
pouch, be sure to secure it with the hook and
loop fastener.
1. Hook and loop fastener
ESU10840
Rear carrier (PZ50VT / PZ50MP)
The rear carrier is located at the rear of the
snowmobile.
1. Storage pouch lower strap
2. Storage pouch
3. Bracket fastener
TIP
● Be sure to route the storage pouch lower
strap above the bracket fasteners.
● When installing the storage pouch, make
sure that the storage pouch buckles are securely fastened.
Storing the spare V-belt (PZ50 /
PZ50RT / PZ50GT / PZ50MT)
Keep a spare V-belt for emergency use by
storing it in the storage pouch.
26
1. Rear carrier
Maximum load limit:
20 kg (44 lb)
EWS00140
WARNING
Do not use the rear carrier to lift the snowmobile. The snowmobile could fall, which
could result in severe injury or death.
Page 35
Control functions
ESU13200
Tow hitch [PZ50VT (CAN) /
PZ50MP (CAN)(RUS)] and tow
hitch bracket [PZ50VT
(FIN)(SWE) / PZ50MP
(FIN)(SWE)]
ECS00241
NOTICE
To prevent premature wear of the V-belt,
avoid traveling under 10 km/h (6 mi/h)
when towing for long distances or long periods of time.
Tow hitch [PZ50VT (CAN) / PZ50MP
(CAN)(RUS)]
Use the tow hitch within the specified weight
limits.
CANADA
Tow weight limit:
120 kg (265 lb)
Vertical weight limit:
15 kg (33 lb)
Tow hitch bracket [PZ50VT
(FIN)(SWE) / PZ50MP (FIN)(SWE)]
This snowmobile is equipped with a tow hitch
bracket that is used to install a tow hitch.
Use the tow hitch bracket within the specified
weight limits.
1
1. Tow hitch bracket
TIP
A tow hitch is not included with the snowmobile and must be purchased separately.
1. Tow hitch
RUSSIA
1. Tow hitch
Tow weight limit:
120 kg (265 lb)
Vertical weight limit:
15 kg (33 lb)
ESU10631
Fuel
Make sure there is sufficient gasoline in the
tank.
EWS00071
WARNING
Gasoline and gasoline vapors are extremely flammable. To avoid fires and explosions and to reduce the risk of injury
when refueling, follow these instructions.
27
Page 36
Control functions
1. Before refueling, turn off the engine and
be sure that nobody is on the snowmobile. Never refuel while smoking, or while
in the vicinity of sparks, open flames, or
other sources of ignition such as the pilot
lights of water heaters and clothes dryers.
2. Do not overfill the fuel tank. Stop filling
when the fuel reaches the bottom of the
filler tube. Because fuel expands when it
heats up, heat from the engine or the sun
can cause fuel to spill out of the fuel tank.
3. Wipe up any spilled fuel immediately.
4. Be sure the fuel tank cap is closed securely by turning it clockwise.
EWS00680
WARNING
Gasoline is poisonous and can cause injury or death. Handle gasoline with care.
Never siphon gasoline by mouth. If you
should swallow some gasoline or inhale a
lot of gasoline vapor, or get some gasoline
in your eyes, see your doctor immediately.
If gasoline spills on your skin, wash with
soap and water. If gasoline spills on your
clothing, change your clothes.
1. Filler tube
2. Fuel level
28
Recommended fuel:
PREMIUM UNLEADED GASOLINE
ONLY
Fuel tank capacity:
PZ50 26.7 L (7.05 US gal,
5.87 Imp.gal)
PZ50GT 26.7 L (7.05 US gal,
5.87 Imp.gal)
PZ50MP 32.9 L (8.69 US gal,
7.24 Imp.gal) (CAN)
PZ50MP 36.0 L (9.51 US gal,
7.92 Imp.gal) (FIN)(RUS)(SWE)
PZ50MT 26.7 L (7.05 US gal,
5.87 Imp.gal)
PZ50RT 26.7 L (7.05 US gal,
5.87 Imp.gal)
PZ50VT 32.9 L (8.69 US gal,
7.24 Imp.gal) (CAN)
PZ50VT 36.0 L (9.51 US gal,
7.92 Imp.gal) (FIN)(SWE)
Page 37
Control functions
Your Yamaha engine has been designed to
use premium unleaded gasoline with a pump
octane number [(R+M)/2] of 91 or higher, or a
research octane number of 95 or higher.
If the recommended fuel is not used, the engine may not perform as it should.
ECS00090
NOTICE
● Make sure that snow or ice does not en-
ter the fuel tank when refueling.
● The fuel tank should be filled with
straight gasoline as specified.
For CANADA
● Oxygenated fuels (gasohol) containing
a maximum 10% of ethanol can be used,
although richer jetting may be required
to prevent engine damage. Consult a
Yamaha dealer. Gasohol containing
methanol is not recommended.
● Do not use alcohol deicers or water ab-
sorbing additives with oxygenated fuel.
ESU10872
Suspension
The suspension can be adjusted to suit rider
preference. Softer settings, for example, may
provide greater rider comfort, while harder
settings may allow more precise handling and
control over certain types of terrain or riding
conditions.
If you are not familiar with suspension adjustments, have a Yamaha dealer make these
adjustments.
EWS00151
WARNING
Read and understand the following information before handling shock absorbers
that contain highly pressurized nitrogen
gas.
● Do not tamper with or attempt to open
the cylinder assemblies.
● Do not subject the shock absorbers to
an open flame or other high heat source.
This may cause the unit to explode due
to excessive gas pressure.
● Do not deform or damage the cylinders
in any way. Cylinder damage will result
in poor damping performance.
● Do not dispose of a damaged or worn
out shock absorber yourself. Take the
shock absorber to a Yamaha dealer for
any service.
ESU10904
Adjusting the spring preload of the
front shock absorbers (PZ50 /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
EWS00720
WARNING
The spring preload of the left and right
shock absorbers must be adjusted to the
same setting. Uneven settings can cause
poor handling and loss of stability.
The spring preload can be adjusted by turning
the adjusting rings [PZ50 / PZ50MT (CAN) /
PZ50VT (CAN)] or adjusting nuts [PZ50GT /
PZ50MT (FIN)(SWE) / PZ50VT (FIN)(SWE) /
PZ50MP]. Adjust the spring preload as follows.
PZ50 / PZ50MT (CAN) / PZ50VT (CAN)
(a)
(b)
1. Spring preload adjusting ring
29
Page 38
Control functions
To increase the spring preload and thereby
harden the suspension, turn the adjusting ring
in direction (a). To decrease the spring preload and thereby soften the suspension, turn
the adjusting ring in direction (b).
Spring preload setting:
Minimum (soft):
1
Standard:
1
Maximum (hard):
5
PZ50GT / PZ50MT (FIN)(SWE) / PZ50VT
(FIN)(SWE) / PZ50MP
1
3
2
(a)
(b)
1. Locknut
2. Distance A
3. Spring preload adjusting nut
1. Loosen the locknut.
2. To increase the spring preload and thereby harden the suspension, turn the adjusting nut in direction (a). To decrease
the spring preload and thereby soften the
suspension, turn the adjusting nut in direction (b).
TIP
The spring preload setting is determined by
measuring distance A, shown in the illustration. The longer distance A is, the higher the
spring preload; the shorter distance A is, the
lower the spring preload.
Spring preload setting*:
Minimum (soft):
PZ50GT 168.6 mm (6.64 in)
PZ50MT (FIN)(SWE) / PZ50VT
(FIN)(SWE) / PZ50MP 137.5 mm
(5.41 in)
Standard:
PZ50GT 168.6 mm (6.64 in)
PZ50MT (FIN)(SWE) / PZ50VT
(FIN)(SWE) / PZ50MP 138.5 mm
(5.45 in)
Maximum (hard):
PZ50GT 178.6 mm (7.03 in)
PZ50MT (FIN)(SWE) / PZ50VT
(FIN)(SWE) / PZ50MP 148.5 mm
(5.85 in)
* Distance A changes 1.5 mm (0.06 in)
with each full turn of the adjusting nut.
3. Tighten the locknut to the specified
torque. NOTICE: Always tighten the
locknut against the adjusting nut, and
then tighten the locknut to the specified torque.
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
ESU12553
[ECS00860]
Adjusting the air pressure of the front
shock absorbers (PZ50RT)
EWS00730
WARNING
The air pressure of the left and right shock
absorbers must be adjusted to the same
setting. Uneven settings can cause poor
handling and loss of stability.
This snowmobile is equipped with FOX shock
absorbers as standard equipment.
The air pressure of the shock absorbers can
be adjusted using the shock absorber pump
included with your snowmobile.
30
Page 39
1. Shock absorber pump 1. Air valve cap
To adjust the air pressure
EWS00621
WARNING
Support the snowmobile securely on a
suitable stand before adjusting the shock
absorbers. Otherwise, the snowmobile
could fall and cause injury.
ECS00710
4. Install the hose connector of the shock
absorber pump onto the air valve of the
shock absorber and tighten it approximately six turns until the pressure registers on the pump gauge. NOTICE: Do
not overtighten the connector onto
the air valve as this will damage the
connector seal.
NOTICE
Make sure that there is no load on the
shock absorbers and that they are fully extended before making any air pressure adjustments.
Control functions
[ECS00721]
1. Place the snowmobile on a level surface
and apply the parking brake.
2. Lift the front of the snowmobile onto a
suitable stand to raise the skis off the
ground.
3. Remove the air valve cap from the shock
absorber.
1. Hose connector
TIP
If the shock absorber has no air pressure, the
gauge reading will be zero.
5. To increase the air pressure, operate the
pump a few times. The pressure should
increase slowly. If the pressure increases
rapidly, check to make sure that the
pump is properly connected and tightened onto the air valve. To decrease the
31
Page 40
Control functions
air pressure, push the black bleed valve
button. NOTICE: Do not exceed 1034
kPa (10.3 kgf/cm², 150 psi).
1. Bleed valve button
[ECS00732]
Air pressure range:
345 kPa (3.4 kgf/cm², 50 psi) to 1034
kPa (10.3 kgf/cm², 150 psi)
Recommended air pressure:
483 kPa (4.8 kgf/cm², 70 psi)
TIP
To allow pressure to escape from the pump
and the shock absorber, push the button halfway down and hold it. To allow only a small
amount of pressure to escape, push the button all the way down and quickly release it.
TIP
When removing the connector, the sound of
air escaping may be heard, but this is from the
pump hose, not the shock absorber.
7. Install the air valve cap.
TIP
If the front shock absorber bottoms too easily
or rolls too much during cornering, increase
the air pressure by 34 kPa (0.3 kgf/cm², 5 psi).
If the shock absorber is too firm and you want
a more compliant ride, decrease the air pressure by 34 kPa (0.3 kgf/cm², 5 psi).
ESU10925
Adjusting the damping forces of the
front shock absorbers (PZ50GT)
EWS00740
WARNING
The damping forces of the left and right
shock absorbers must be adjusted to the
same settings. Uneven settings can cause
poor handling and loss of stability.
Compression damping force
The compression damping force of each
shock absorber can be adjusted by turning its
compression damping force adjusting knob.
To increase the compression damping force,
turn the adjusting knob in direction (a). To decrease the compression damping force, turn
the adjusting knob in direction (b).
6. Remove the hose connector from the air
valve.
32
1. Compression damping force adjusting knob
Page 41
Control functions
Compression damping setting:
Minimum (soft):
12 click(s) in direction (b)*
Standard:
7 click(s) in direction (b)*
Maximum (hard):
2 click(s) in direction (b)*
* With the adjusting knob fully turned in
direction (a)
Rebound damping force
The rebound damping force of each shock
absorber can be adjusted by turning its rebound damping force adjusting knob.
To increase the rebound damping force, turn
the adjusting knob in direction (a). To decrease the rebound damping force, turn the
adjusting knob in direction (b).
TIP
The damping forces will not decrease past the
minimum levels even if the adjusting knobs
are turned out more than the minimum settings.
ESU10936
Adjusting the spring preload of the
center shock absorber and the rear
torsion springs
The spring preload can be adjusted by turning
the adjusting ring [PZ50 / PZ50GT / PZ50MT
(CAN) / PZ50VT (CAN)] or adjusting nut
[PZ50RT / PZ50MT (FIN)(SWE) / PZ50VT
(FIN)(SWE) / PZ50MP] on the center shock
absorber and the adjusters on the rear torsion
springs. Adjust the spring preload as follows.
Center shock absorber [PZ50 / PZ50GT /
PZ50MT (CAN) / PZ50VT (CAN)]
PZ50 / PZ50GT / PZ50VT (CAN)
(b)
1. Rebound damping force adjusting knob
Rebound damping setting:
Minimum (soft):
20 click(s) in direction (b)*
Standard:
12 click(s) in direction (b)*
Maximum (hard):
3 click(s) in direction (b)*
* With the adjusting knob fully turned in
direction (a)
(a)
1. Spring preload adjusting ring
33
Page 42
Control functions
PZ50MT (CAN)
(b)
(a)
1. Spring preload adjusting ring
To increase the spring preload and thereby
harden the suspension, turn the adjusting ring
in direction (a). To decrease the spring preload and thereby soften the suspension, turn
the adjusting ring in direction (b).
Spring preload setting:
Minimum (soft):
1
Standard:
PZ50 / PZ50GT / PZ50VT (CAN) 1
PZ50MT (CAN) 3
Maximum (hard):
5
Center shock absorber [PZ50RT / PZ50MT
(FIN)(SWE) / PZ50VT (FIN)(SWE) /
PZ50MP]
1
2
3
2. To increase the spring preload and thereby harden the suspension, turn the adjusting nut in direction (a). To decrease
the spring preload and thereby soften the
suspension, turn the adjusting nut in direction (b).
TIP
The spring preload setting is determined by
measuring distance A, shown in the illustration. The longer distance A is, the higher the
spring preload; the shorter distance A is, the
lower the spring preload.
Spring preload setting*:
Minimum (soft):
PZ50RT (CAN) / PZ50MT
(FIN)(SWE) 112.5 mm (4.43 in)
PZ50RT (FIN)(SWE) 114.5 mm
(4.51 in)
PZ50VT (FIN)(SWE) / PZ50MP
111.5 mm (4.39 in)
Standard:
PZ50RT (CAN) / PZ50MT
(FIN)(SWE) 113.5 mm (4.47 in)
PZ50RT (FIN)(SWE) 115.5 mm
(4.55 in)
PZ50VT (FIN)(SWE) / PZ50MP
112.5 mm (4.43 in)
Maximum (hard):
PZ50RT (CAN) / PZ50MT
(FIN)(SWE) 123.5 mm (4.86 in)
PZ50RT (FIN)(SWE) 125.5 mm
(4.94 in)
PZ50VT (FIN)(SWE) / PZ50MP
122.5 mm (4.82 in)
* Distance A changes 1.5 mm (0.06 in)
with each full turn of the adjusting nut.
(a)
(b)
1. Spring preload adjusting nut
2. Distance A
3. Locknut
1. Loosen the locknut.
34
3. Tighten the locknut to the specified
torque. NOTICE: Always tighten the
locknut against the adjusting nut, and
then tighten the locknut to the specified torque.
[ECS00860]
Page 43
Control functions
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
Rear torsion springs
EWS00750
WARNING
The left and right spring preloads must be
adjusted to the same setting. Uneven settings can cause poor handling and loss of
stability.
(b)
(a)
1. Spring preload adjuster
To increase the spring preload and thereby
harden the suspension, turn the adjuster in direction (a). To decrease the spring preload
and thereby soften the suspension, turn the
adjuster in direction (b).
Spring preload setting:
Minimum (soft):
S
Standard:
M
Maximum (hard):
H
ESU13092
Adjusting the 2-up adjusting blocks
(PZ50VT / PZ50MP)
EWS00760
WARNING
Make sure that the 2-up adjusting blocks
are installed in the same position on both
sides of the snowmobile, otherwise poor
handling and loss of stability may result.
The spring force can be adjusted by changing
the position of the 2-up adjusting blocks.
1. 2-up adjusting block
TIP
● Be sure to make this adjustment when
there is no load (rider or cargo) on the
snowmobile.
● Use the special tools included in the own-
er’s tool kit to make the adjustment.
1. Insert the special tools into the 2-up adjusting block as shown.
35
Page 44
Control functions
1. 2-up position (rider and passenger)
2. Solo rider position
3. Special tool
4. Lock pin
2. Pull the lock pin and turn the special tools
to change the block position.
3. Release the lock pin.
4. Remove the special tools from the 2-up
adjusting block.
ESU11022
Adjusting the compression damping
force of the rear shock absorber
(PZ50RT)
The compression damping force can be adjusted by turning the adjusting screw.
To increase the compression damping force,
turn the adjusting screw in direction (a). To
decrease the compression damping force,
turn the adjusting screw in direction (b).
NOTICE: Do not continue to turn the adjusting screw in direction (a) after it stops.
The shock absorber could be damaged
and damping force adjustments will not be
able to be made. Do not turn the adjusting
screw in direction (b) more than 20
click(s). Even if the adjusting screw is continually turned after 20 click(s), there will
be no change in the damping force. Be
sure to stop the adjusting screw at a position where there is a click.
[ECS00301]
1. Compression damping force adjusting
screw
Compression damping force setting:
Minimum (soft):
20 click(s) in direction (b)*
Standard:
11 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting screw fully turned in
direction (a)
ESU11033
Adjusting the control rods (PZ50VT /
PZ50MP)
EWS00770
WARNING
The left and right adjusting nuts must be
set to the same position. Uneven settings
can cause poor handling and loss of stability.
The weight transfer can be adjusted by turning the adjusting nuts on the control rods.
1. Loosen the locknut while holding the adjusting nut.
36
Page 45
1. Locknut
2. Control rod adjusting nut
2. To increase weight transfer, turn the adjusting nut in direction (a), and to decrease weight transfer, turn it in direction
(b). WARNING! Never adjust the con-
trol rods beyond the maximum setting, indicated by red paint; otherwise,
they could be damaged, which could
lead to an accident or injury.
[EWS00173]
Control functions
1. Red paint area
2. Adjustable range
3. Standard position
3. Tighten the locknut while holding the adjusting nut in place.
Locknut tightening torque:
25 Nm (2.5 m·kgf, 18 ft·lbf)
37
Page 46
Pre-operation checks
ESU11071
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition.
Always follow the inspection and maintenance procedures and schedules described in the
Owner’s Manual.
EWS00191
WARNING
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage. Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided in this manual, have the vehicle
inspected by a Yamaha dealer.
ESU11080
Pre-operation check list
ITEM CHECKS PAGE
Fuel
Engine oil
Coolant
V-belt
Drive guard
Brake
Air filter
Tool kit and recommended
equipment
Shroud latches (PZ50VT /
PZ50MP)
Shroud and covers
• Check fuel level.
• Refuel if necessary.
• Check fuel line for leakage.
• Check oil level in engine.
• If necessary, add recommended oil to specified
level.
• Check vehicle for oil leakage.
• Check coolant level.
• Add if necessary.
• Check for wear and damage.
• Replace if necessary.
• Make sure that drive guard is tightened securely.
• Check the drive guard mounts for damage.
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
• Check brake pads for wear.
• Replace if necessary.
• Check fluid level in master cylinder.
• If necessary, add recommended brake fluid to
specified level.
• Check hydraulic system for leakage.
• Check that there is no snow under the air filter ele-
ment.
• If necessary, brush off the snow.
• Check for proper placement. 53
• Make sure that the shroud latches are hooked. 22
• Make sure that the shroud and covers are securely
fastened.
27
60
64
65
24
68
59
23
38
Page 47
Pre-operation checks
ITEM CHECKS PAGE
Skis and ski runners
Drive track
Slide runners
Steering • Check for excessive free play. 71
Strap (PZ50MT)
Lights, signals and switch-es• Check operation.
Throttle lever
Throttle override system
(T.O.R.S.)
• Check for wear and damage.
• If necessary, have Yamaha dealer replace skis or
ski runners.
• Check for deflection, wear and damage.
• If necessary, have Yamaha dealer replace track.
• Check for wear and damage.
• If necessary, have Yamaha dealer replace slide
runners.
• Check for damage.
• Replace if necessary.
• Correct if necessary.
• Make sure that operation is smooth and spring
back to its home position when released.
• Check the T.O.R.S. for proper operation.
• If system is defective, have Yamaha dealer check
vehicle.
70
72
72
45
21, 20, 75, 76
13
58
39
Page 48
Operation
ESU13210
TIP
This model is equipped with an engine oil
pressure switch to stop the engine in case an
engine oil pressure drop is detected. To start
the engine after this system has stopped the
engine, be sure to place the snowmobile on a
level surface, and then turn the key in the
main switch to the off position, and then to the
on position. Failing to do so will prevent the
engine from starting even though the engine
will crank when turning the key to the start position. If the engine does not start or if it stops
again, ask a Yamaha dealer to inspect the
snowmobile.
ESU11302
Starting the engine
Read the Owner’s Manual carefully to become familiar with all controls. If there is a
control or function you do not understand, ask
your Yamaha dealer.
EWS00201
WARNING
Failure to familiarize yourself with the controls can lead to loss of control, which
could cause an accident or injury.
2. Be sure the engine stop switch is in the
run position. The starter motor cannot be
operated when the engine stop switch is
in the off position.
3. Turn the main switch to the start position
and release it when the engine starts.
NOTICE: Release the switch immediately after the engine starts. If the engine fails to start, release the switch,
wait a few seconds, then try again.
Each attempt should be as short as
possible to preserve the battery. Do
not crank the engine more than 10
seconds on any one attempt.
[ECS00331]
1. Apply the parking brake.
40
1. Start
4. Warm up the engine until it runs smoothly.
5. Be sure the low coolant temperature indicator light has gone out before operation.
(See page 16 for detailed information
about the indicator light.)
Page 49
Operation
ESU11320
Break-in
There is never a more important period in the
life of your engine than the period between 0
and 500 km (300 mi). For this reason, you
should read the following material carefully.
Since the engine is brand new, do not put an
excessive load on it for the first 500 km (300
mi). The various parts in the engine wear and
polish themselves to the correct operating
clearances. During this period, prolonged fullthrottle operation or any condition that might
result in engine overheating must be avoided.
Operating your snowmobile for the
first time
Start the engine and let it idle for 15 minutes.
0–160 km (0–100 mi)
Avoid prolonged operation above 8000 r/min.
160–500 km (100–300 mi)
Avoid prolonged operation above 10000
r/min.
500 km (300 mi) and beyond
The snowmobile can now be operated normally.
ECS00340
NOTICE
● After 800 km (500 mi) of operation, the
engine oil must be changed and the oil
filter cartridge replaced.
● If any engine trouble should occur dur-
ing the engine break-in period, immediately have a Yamaha dealer check the
snowmobile.
ESU12624
Riding your snowmobile
Getting to know your snowmobile
EWS00211
WARNING
To avoid severe injury or death:
● Keep both hands on the handlebar dur-
ing operation.
● Never put your feet outside the running
boards.
● Avoid higher speeds or more difficult
maneuvers until you have become thoroughly familiar with your snowmobile
and all of its controls.
A snowmobile is a rider active vehicle, and
your riding position and your balance are the
two basic factors of maneuvering your snowmobile.
Riding your snowmobile requires skills acquired through practice over a period of time.
Take the time to learn the basic techniques
well before attempting more difficult maneuvers.
Riding your new snowmobile can be a very
enjoyable activity, providing you with hours of
pleasure. However, it is essential to familiarize yourself with the operation of the snowmobile to achieve the skill necessary to enjoy
riding safely. Before operating the snowmobile, read this Owner’s Manual completely
and understand the operation of the controls.
Pay particular attention to the safety information on page 8.
Please read all warning and notice labels on
your snowmobile.
Also, read the Snowmobiler’s Safety Handbook that is supplied with your snowmobile
(for Canada).
Learning to ride your snowmobile
Before you ride, always perform the pre-operation checks listed on page 38. The short time
spent checking the condition of the snowmobile will be rewarded with added safety and a
more reliable snowmobile. Always wear the
proper clothing for both warmth and to help
protect you from injury if an accident occurs.
Become familiar with operating your snowmobile at low speeds, even if you are an experienced rider. Do not attempt to operate at
41
Page 50
Operation
maximum performance until you are totally familiar with the snowmobile’s handling and
performance characteristics.
The beginning operator should select a large
flat area to become familiar with the snowmobile. Make sure that this area is free of obstacles and other traffic. You should practice
control of the throttle and brake, and master
turning techniques in this area before trying
more difficult terrain.
Set the parking brake and follow the instructions on page 40 to start the engine. Once the
engine has warmed up, you are ready to begin riding your snowmobile.
To start out and accelerate
1. With the engine idling, release the parking brake.
2. Apply the throttle slowly and smoothly.
The V-belt clutch will engage and you will
start to accelerate. WARNING! Do not
allow anyone to stand behind the
snowmobile when starting the engine.
A broken track, track fittings, or debris
thrown by the track could be dangerous to bystanders.
[EWS00690]
Braking
EWS00220
WARNING
● Many surfaces such as ice and hard-
packed snow require much longer stopping distances. Be alert, plan ahead, and
begin decelerating early.
● Improper use of the brake can cause the
drive track to lose traction, reduce control, and increase the possibility of an
accident.
When slowing down or stopping, release the
throttle and apply the brake gently—not suddenly.
Turning
For most snow surfaces, “body English” is the
key to turning.
As you approach a curve, slow down and begin to turn the handlebar in the desired direction. As you do so, put your weight on the
running board to the inside of the turn and
lean your upper body into the turn.
This procedure should be practiced at low
speeds many times, in a large flat area with no
obstacles. Once you have learned this technique, you should be able to perform it at higher speeds or in tighter curves. Lean more as
the turn gets sharper or is made at higher
speeds.
Improper riding techniques such as abrupt
throttle changes, excessive braking, incorrect
body movements, or too much speed for the
sharpness of the turn may cause the snowmobile to tip.
If your snowmobile begins to tip while turning,
lean more into the turn to regain balance. If
necessary, gradually let off on the throttle or
steer to the outside of the turn.
Remember:
Avoid higher speeds until you are thoroughly
familiar with the operation of your snowmobile.
Riding uphill
EWS00231
WARNING
Operation on slopes can lead to loss of
control if proper techniques are not used.
Follow these instructions to reduce your
42
Page 51
Operation
risk of an accident. Do not try steeper or
more difficult inclines until you have developed your skill on gentle slopes.
You should practice first on gentle slopes. Try
more difficult climbs only after you have developed your skill. As you approach a hill, accelerate before you start the climb, and then
reduce the throttle to prevent track slippage. It
is also important to keep your weight on the
uphill side at all times. On climbs straight up
the hill, this can be accomplished by leaning
forward and, on steeper inclines, standing on
the running boards and leaning forward over
the handlebar. (Also see “Traversing a
slope”.)
Riding downhill
EWS00240
WARNING
Use extra caution when applying the brake
during a descent. Excessive braking will
cause the drive track to lock, causing a
loss of control.
When riding downhill, keep speed to a minimum. It is important to apply just enough
throttle to keep the clutch engaged while descending the hill. This will allow you to use engine compression to help slow the
snowmobile, and to keep the snowmobile
from rolling freely down the hill. Also apply the
brake frequently, with light pressure.
Slow down as you reach the crest of the hill,
and be prepared to react to obstacles, sharp
drops, or other vehicles or people which may
be on the other side. If you are unable to continue up a hill, do not spin the track. Stop the
engine and set the parking brake. Then pull
the rear of the snowmobile around to point the
snowmobile back down the hill. When the
snowmobile is pointed downhill, mount your
snowmobile from the uphill side. Restart the
engine, release the parking brake, and descend the hill.
Traversing a slope
EWS00251
WARNING
Driving across the face of a slope (“sidehilling”) can lead to overturn or loss of
control if proper techniques are not used.
Follow these instructions to reduce your
risk of an accident. Do not try steeper or
more difficult inclines until you have developed your skill on gentle slopes.
Traversing a slope requires you to properly
position your weight to maintain proper balance. As you travel across the slope, lean
your body to position your weight towards the
uphill side. A recommended riding position is
to kneel with the knee of your downhill leg on
43
Page 52
Operation
the seat and the foot of your uphill leg on the
running board. This position will make it easier for you to shift your body weight as needed.
Snow and ice are slippery, so be prepared for
the possibility that your snowmobile could begin to slip sideways on the slope. If this happens, steer in the direction of the slide if there
are no obstacles in your path. As you regain
proper balance, gradually steer again in the
direction you wish to travel.
If your snowmobile starts to tip, steer down
the hill to regain balance. WARNING! If you
are unable to maintain correct balance,
and your snowmobile is going to tip over,
dismount your snowmobile immediately
on the uphill side to avoid being hit or
caught under the snowmobile as it tips
over.
[EWS00261]
Ice or icy surface
EWS00270
WARNING
When you have to operate on ice or icy
surfaces, drive slowly and cautiously.
Avoid accelerating, turning, and braking
rapidly. Steering is minimal and uncontrolled spins are an ever-present danger.
Operating on ice or icy surfaces can be very
dangerous. Traction for turning, stopping, and
starting is much less than that on snow.
Hard-packed snow
It can be more difficult to negotiate on hardpacked snow as both the skis and drive track
do not have as much traction as when the
snowmobile is operated on fresh snow. Avoid
rapid acceleration, turning, and braking.
Operation on surfaces other than
snow or ice
Operation of your snowmobile on surfaces
other than snow or ice should be avoided. Operation under such conditions will damage or
result in rapid wear of the ski runners, drive
track, slide runners, and drive sprockets. Operation of the snowmobile on the following
surfaces should be avoided at all times:
● Dirt
● Sand
● Rocks
● Grass
● Bare pavement
Other surfaces that should be avoided for the
sake of drive track and slide runner life are:
● Glare ice surfaces
● Snow mixed with a lot of dirt and sand
All of the above surfaces have one thing in
common in regard to drive track and slide runners: little or no lubricating ability. Drive track
and all slide rail systems require lubrication
(snow or water) between the slide runners
and the slide metal. In the absence of lubrication, the slide runners will rapidly wear and in
severe cases, literally melt away, and the
drive track will be subject to damage or failure.
Also traction aids such as studs, cleats, etc.,
may cause further track damage or failure.
EWS00280
WARNING
Drive track damage or failure could result
in loss of braking ability and snowmobile
control, which could cause an accident.
44
Page 53
Operation
● Always check the drive track for damage
or maladjustment before operating the
snowmobile.
● Do not operate the snowmobile if you
find damage to the drive track.
ECS00350
NOTICE
Ride on fresh snow frequently. Operating
on ice or hard-packed snow will rapidly
wear the slide runners.
ESU11350
Maximizing drive track life
Recommendations
Track tension
During initial break-in, the new drive track will
tend to stretch quickly as the track settles. Be
sure to correct the track tension and alignment frequently. (See page 72 for adjustment
procedures.) A loose track can slip (ratchet),
derail or catch on suspension parts causing
severe damage. Do not overtighten the drive
track, otherwise it may increase the friction
between the track and the slide runners, resulting in the rapid wear of both components.
Also, this may put an excessive load on the
suspension components, resulting in component failure.
Marginal snow
The drive track and the slide runners are lubricated and cooled by snow and water. To prevent the drive track and slide runners from
overheating, avoid sustained high-speed usage in areas such as icy trails, frozen lakes
and rivers that have minimal snow coverage.
An overheated track will be weakened internally, which may cause failure or damage.
Off-trail riding
Avoid off-trail riding until there is sufficient
snow coverage. It generally takes several feet
of snow to provide a good overall base to
properly cover debris, such as rocks, logs,
etc. If snow coverage is not sufficient, stay on
trails to avoid impact damage to the drive
track.
Studded track
In general, track life will be shortened when
studs are installed. Drilling stud holes into the
drive track will cut the internal fibers, which
weakens the track. Avoid spinning the drive
track. Studs may catch on an object and pull
out of the track, leaving tears and damage
around the already weakened area. To minimize possible damage, consult your stud
manufacturer for installation and stud pattern
recommendations.
Yamaha does not recommend track studding.
ESU11360
Strap (PZ50MT)
The strap should be used only by experienced
operators to assist them when traverse (sidehill) riding.
1. Strap
EWS00290
WARNING
Improper use of the strap on the handlebar
can result in severe injury or death.
● Use the strap only as an operator grip
point when needed to shift weight uphill
to maintain balance during traverse
(side-hill) riding. Only experienced operators should traverse slopes steep
enough to require strap use.
45
Page 54
Operation
● Keep the right hand on the right handle-
bar grip for steering, and grip the strap
with the left hand to shift weight uphill
for balance during traverse riding.
● Ride cautiously while using the strap.
Do not accelerate or decelerate abruptly
while holding onto the strap.
● Do not use the strap to lift the snowmo-
bile.
● Do not use the strap as a mounting point
for cargo or accessories.
ESU11404
Driving
EWS00300
WARNING
Be sure to read the “SAFETY INFORMATION” section on page 8 and the “Riding
your snowmobile” section on page 41
carefully before operating the snowmobile.
TIP
Make sure that the engine is warmed up
enough before riding.
4. Squeeze the brake lever to stop the
snowmobile.
5. Apply the parking brake by moving the
parking brake lever to the left.
PZ50RT / PZ50GT / PZ50MT / PZ50VT /
PZ50MP
1. While the engine is idling, select the desired operating position by pressing the
drive select switch. Make sure that the
drive “D” indicator light or the reverse “R”
indicator light flashes, and then remains
on. Once the indicator light for the selected position remains on, the snowmobile
can be driven. NOTICE: Do not shift
from drive to reverse or from reverse
to drive while the snowmobile is moving, as the drive train could be damaged.
[ECS00851]
PZ50
1. Release the parking brake by moving the
parking brake lever to the right.
2. Press the throttle lever slowly to move the
snowmobile.
3. Turn the handlebar in the desired direction.
46
1. Drive select switch (PZ50RT / PZ50GT /
PZ50MT / PZ50VT / PZ50MP)
2. Drive “D” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
3. Reverse “R” indicator light (PZ50RT /
PZ50GT / PZ50MT / PZ50VT / PZ50MP)
TIP
If the indicator light keeps flashing, the snowmobile is not correctly shifted into drive or reverse. If this occurs, applying a little throttle
while applying the brake will help the transmission to engage.
Page 55
EWS00321
WARNING
● Make sure that the throttle lever is fully
released and the snowmobile is at a full
stop before shifting.
● Be sure to press the drive select switch
only while the engine is idling.
● Make sure that the reverse “R” indicator
light comes on and remains on, and that
the area behind the snowmobile is clear
before reversing. Watch behind.
● Reduce speed and avoid sharp turning
when operating the snowmobile in reverse.
TIP
The reverse buzzer beeps while the transmission is in reverse.
2. Release the parking brake by moving the
parking brake lever to the right.
Operation
1. Off
● Push down the engine stop switch to stop
the engine in an emergency.
3. Press the throttle lever slowly to move the
snowmobile.
4. Turn the handlebar in the desired direction.
5. Squeeze the brake lever to stop the
snowmobile.
6. Apply the parking brake by moving the
parking brake lever to the left.
ESU11411
Stopping the engine
● Turn the main switch to the off position to
stop the engine.
ESU11430
Transporting
When transporting your snowmobile on a trailer or in a truck, observe the following recommendations to help protect it from damage:
● If transporting the snowmobile in an open
trailer or truck, put a tight fitting cover on the
snowmobile. A cover specifically designed
for your snowmobile is best. This will help
keep foreign objects out of the cooling
vents, and also help protect the snowmobile against damage from debris on the
road.
● If transporting the snowmobile in an open
trailer or truck in areas where road salt is
used, coat metal suspension surfaces lightly with oil or another protectant. This will
47
Page 56
Operation
help protect against corrosion. Be sure to
clean the snowmobile when you get to your
destination to remove any corrosive salts.
48
Page 57
Periodic maintenance and adjustment
ESU13180
Periodic inspection, adjustment, and lubrication will keep your snowmobile in the safest and
most efficient condition possible. Safety is an obligation of the vehicle owner/operator. The
most important points of vehicle inspection, adjustment, and lubrication are explained on the
following pages.
EWS00341
WARNING
Failure to properly maintain the snowmobile or performing maintenance activities incorrectly may increase your risk of injury or death during service or while using the snowmobile. If you are not familiar with snowmobile service, have a Yamaha dealer perform
service.
EWS00700
WARNING
Turn off the engine when performing maintenance unless otherwise specified.
● A running engine has moving parts that can catch on body parts or clothing, and elec-
trical parts that can cause shocks or fires.
● Running the engine while servicing can lead to eye injury, burns, fire, or carbon mon-
oxide poisoning–possibly leading to death. See page 8 for more information about
carbon monoxide.
ESU11461
Periodic maintenance chart for the emission control system
Items marked with an asterisk should be performed by a Yamaha dealer as they require special
tools, data and technical skills.
INITIAL EVERY
ITEM REMARKS
Spark plugs
* Valve clearance
Crankcase breather
*
system
* Fuel line
* Idle speed • Check and adjust idle speed. 57
* Fuel injection • Adjust synchronization. —
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
• Check and adjust valve clear-
ance when engine is cold.
• Check breather hose for cracks
or damage.
• Replace if necessary.
• Check fuel hose for cracks or
damage.
• Replace if necessary.
1 month
or 800 km
(500 mi)
(40 hr)
Every 40000 km (25000
Seasonally
or
4000 km
(2500 mi)
(200 hr)
mi)
PAG E
56
60
—
—
49
Page 58
Periodic maintenance and adjustment
INITIAL EVERY
Seasonally
ITEM REMARKS
* Exhaust system
1 month
or 800 km
(500 mi)
(40 hr)
• Check for leakage.
• Tighten or replace gasket if
necessary.
or
4000 km
(2500 mi)
(200 hr)
PAG E
—
50
Page 59
Periodic maintenance and adjustment
ESU11561
General maintenance and lubrication chart
INITIAL EVERY
ITEM REMARKS
Engine oil
Engine oil filter car-
*
tridge
* Cooling system
Primary and sec-
*
ondary clutches
* Drive chain
* Drive chain oil
Brake and parking
*
brake
Control cables
Disc brake installa-
*
tion
* Slide runners
Skis and ski run-
*
ners
• Change (warm engine before
draining)
• Replace.
• Check coolant level.
• Air bleed the cooling system if
necessary.
• Check engagement and shift
speed.
• Adjust if necessary.
• Inspect sheaves for wear and
damage.
• Inspect weights/rollers and
bushings for wear for primary.
• Inspect ramp shoes/bushings
for wear for secondary.
• Replace if necessary.
• Lubricate with specified
grease.
• Check chain slack.
• Adjust if necessary.
• Check oil level. 67
• Change. 67
• Adjust free play and/or replace
pads if necessary.
• Change brake fluid.
• Make sure that operation is
smooth.
• Lubricate if necessary.
• Check for slight free play.
• Lubricate shaft with specified
grease as required.
• Check for wear and damage.
• Replace if necessary.
• Check for wear and damage.
• Replace if necessary.
1 month
or 800 km
(500 mi)
Whenever operating ele-
Initial at 500 km (300 mi)
and every 800 km (500
See TIP following this
Every 1600 km (1000
Seasonally
4000 km
(40 hr)
vation is changed.
mi) thereafter.
(2500 mi)
(200 hr)
Every
20000 km
(12000 mi)
chart.
mi)
or
PAG E
60
60
64
—
—
—
—
67
68
68
75
—
72
70
51
Page 60
Periodic maintenance and adjustment
INITIAL EVERY
ITEM REMARKS
* Steering system
* Steering bearings
Skis and front
*
shock absorbers
Suspension compo-
*
nent
Fittings and fasteners
* Battery
• Check toe-out.
• Adjust if necessary.
• Check bearing assemblies for
looseness.
• Lubricate with specified
grease.
• Lubricate with specified
grease.
• Lubricate with specified
grease.
• Make sure that all nuts, bolts
and screws are properly tightened.
• Tighten if necessary.
• Check condition.
• Charge if necessary.
1 month
or 800 km
(500 mi)
(40 hr)
TIP
Brake system:
● After disassembling the master cylinder or caliper cylinder, always change the brake fluid.
Regularly check the brake fluid level and add fluid if necessary.
● Replace the oil seals of the master cylinder and caliper cylinder every two years.
● Replace the brake hose every four years, or if cracked or damaged.
Seasonally
or
4000 km
(2500 mi)
(200 hr)
PAG E
71
—
75
75
77
77
52
Page 61
Periodic maintenance and adjustment
ESU13001
Tool kit
The service information included in this manual and the tools provided in the owner’s tool
kit are intended to assist you in the performance of preventive maintenance and minor
repairs. However, additional tools such as a
torque wrench may be necessary to perform
certain maintenance work correctly.
1. Tool kit
ECS00780
NOTICE
Before starting the engine, make sure that
the tool kit is securely fastened (PZ50 /
PZ50RT / PZ50GT / PZ50MT) and that the
storage pouch zipper is completely
closed.
TIP
If you do not have a torque wrench available
during a service operation requiring one, take
your snowmobile to a Yamaha dealer to
check the torque settings and adjust them if
necessary.
ESU11763
Removing and installing the
shroud and covers
EWS00091
WARNING
Be sure shroud and covers are secured
before operation. A loose shroud or cover
could move and cause loss of control.
Shroud, front cover, and air filter case
cover
To open the shroud and remove the front cover and air filter case cover
1. Unhook the latch, and then slide the front
cover upward (PZ50 / PZ50RT /
PZ50GT / PZ50MT).
Unhook the shroud latches, and then
slowly raise the shroud forward until it
stops (PZ50VT / PZ50MP).
2. Loosen the fasteners, lift up the air filter
case cover slightly, and then unhook the
cover from the air filter case to remove it.
PZ50 / PZ50RT / PZ50GT / PZ50MT
1. Latch
2. Front cover
3. Air filter case cover
4. Fastener
PZ50VT / PZ50MP
1. Shroud latch
2. Shroud
53
Page 62
Periodic maintenance and adjustment
PZ50 / PZ50RT / PZ50GT / PZ50MT
1. Air filter case cover
2. Fastener
To close the shroud and install the front cover
and air filter case cover
1. Insert the projections on the end of the air
filter case cover into the slots in the air filter case, place it in the original position,
and then tighten the fasteners.
1. Projection on the end of the air filter case
cover
2. Slot in the air filter case
2. Fit the holders on the front cover over the
projections on the air filter case cover,
slide the front cover downward, and then
hook the latch onto the holder on the front
of the snowmobile (PZ50 / PZ50RT /
PZ50GT / PZ50MT).
1. Holder on the front cover
2. Projection on the air filter case cover
Slowly lower the shroud to the original
position, and then hook the shroud latches (PZ50VT / PZ50MP).
Left side cover
To remove the left side cover
Loosen the fasteners, and then remove the
left side cover.
1. Fastener
2. Left side cover
To install the left side cover
Place the left side cover in the original position, and then tighten the fasteners.
Right side cover
To remove the right side cover
Loosen the quick fastener screws, and then
remove the right side cover.
54
Page 63
Periodic maintenance and adjustment
1. Right side cover
2. Quick fastener screw
To install the right side cover
Place the right side cover in the original position, and then tighten the quick fastener
screws.
Top cover (PZ50 / PZ50RT / PZ50GT /
PZ50MT)
To remove the top cover
Pull up on the rear of the top cover.
2. Remove the right upper cover by removing the bolts.
1. Right upper cover bolt
2. Right upper cover
To install the right upper cover
1. Place the right upper cover in the original
position, and then install and tighten the
bolts to the specified torque.
Right upper cover bolt tightening torque:
8 Nm (0.8 m·kgf, 5.8 ft·lbf)
2. Install the top cover.
Left and right upper covers (PZ50VT /
PZ50MP)
To remove an upper cover
1. Open the shroud. (See the above procedure.)
2. Loosen the fasteners, and then remove
the upper cover.
1. Top cover
To install the top cover
Insert the projections on the front of the top
cover into the slots in the left and right upper
covers, and then fit the projections on the rear
of the top cover into the grommets.
Right upper cover (PZ50 / PZ50RT /
PZ50GT / PZ50MT)
To remove the right upper cover
1. Remove the top cover. (See the above
procedure.)
1. Fastener
2. Left upper cover
3. Right upper cover
55
Page 64
Periodic maintenance and adjustment
To install an upper cover
1. Insert the projections on the upper cover
into the slots, fit the holders on the cover
onto the grommets, and then tighten the
fasteners.
1. Projection
2. Holder
1. Grommet
ECS00371
NOTICE
● Make sure that all cables, leads, etc., are
routed properly before installing the
shroud and covers.
● When installing the shroud and covers,
be sure to tighten the fasteners securely.
ESU11782
Checking the spark plugs
The spark plug is an important engine component and is easy to inspect. The condition of
the spark plug can indicate the condition of
the engine.
Check the coloration on the white porcelain
insulator around the center electrode. The
ideal coloration at this point is a medium to a
light tan color for a snowmobile that is being
ridden normally. If a spark plug shows a distinctly different color, there could be something wrong with the engine. For example, a
very white center electrode porcelain color
could indicate an intake track air leak or carburetion problem for that cylinder. Do not attempt to diagnose such problems yourself.
Instead, take the snowmobile to a Yamaha
dealer for inspection and possible repairs.
You should periodically remove and inspect
the spark plug because heat and deposits will
cause a spark plug to slowly break down and
erode. Consult a Yamaha dealer before
changing to a different type of spark plug.
1. Slot
2. Close the shroud.
56
Specified spark plug:
Manufacturer:
NGK
Model:
CR9EKB
Page 65
Periodic maintenance and adjustment
EWS00710
WARNING
Be sure to use the specified spark plug
and spark plug cap. Otherwise, the
T.O.R.S. may not work properly.
Spark plugs are produced in several different
thread lengths. The thread length or reach is
the distance from the spark plug gasket seat
to the end of the threaded portion. If the reach
is too long, overheating and engine damage
may result. If the reach is too short, spark plug
fouling and poor performance may result. Also, if the reach is too short, carbon will form on
the exposed threads resulting in combustion
chamber hot spots and thread damage. Always use a spark plug with the specified
reach.
Spark plug reach:
19.0 mm (0.75 in)
When installing the spark plug, always clean
the gasket surface. Wipe off any grime from
the threads and tighten the spark plug to the
specified torque.
Spark plug tightening torque:
12.5 Nm (1.25 m·kgf, 9 ft·lbf)
ECS00382
NOTICE
Make sure that the spark plug caps are securely installed. Otherwise the spark plug
caps could be damaged due to engine vibration.
ESU11811
Adjusting the engine idling
speed
1. Start the engine and warm it up.
2. Select the engine speed meter mode.
(See page 14 for details.)
3. Remove the rubber cap.
1. Spark plug gap
2. Spark plug reach
Before installing any spark plug, measure the
electrode gap with a wire thickness gauge
and adjust to specification.
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
1. Rubber cap
4. Insert a Phillips screwdriver into the hole,
and then turn the idle adjusting screw in
or out to adjust the engine idling speed.
57
Page 66
Periodic maintenance and adjustment
ESU11850
Checking the throttle cable free
play (PZ50VT / PZ50MP)
Check the throttle cable free play.
Throttle cable free play:
2.0–3.0 mm (0.08–0.12 in)
Have a Yamaha dealer adjust the free play if
necessary.
1. Idle adjusting screw
Standard engine idling speed:
1700–1900 r/min
5. Install the rubber cap.
ESU11840
Adjusting the throttle cable free
play (PZ50 / PZ50RT / PZ50GT /
PZ50MT)
1. Loosen the locknut.
2. Turn the adjusting bolt in or out until the
proper throttle cable free play is
achieved.
ESU11862
Checking the throttle override
system (T.O.R.S.)
Check the T.O.R.S. for proper operation.
EWS00352
WARNING
When checking the T.O.R.S., take precautions to avoid snowmobile movement
which could cause an accident:
● Make sure that the throttle lever moves
smoothly with the engine off before
checking the T.O.R.S.
● Make sure that the parking brake is ap-
plied.
● Do not rev the engine to the point that
the clutch engages.
1. Locknut
2. Throttle cable free play adjusting bolt
3. Throttle cable free play
Throttle cable free play:
2.0–3.0 mm (0.08–0.12 in)
3. Tighten the locknut.
58
1. Start the engine.
TIP
Refer to the “Starting the engine” section on
page 40.
Page 67
Periodic maintenance and adjustment
2. Hold the pivot point of the throttle lever
away from the throttle switch by putting
your thumb (above) and forefinger (below) between the throttle lever pivot and
the engine stop switch housing.
While holding the pivot point as described
above, press the throttle lever gradually.
Operating the snowmobile with a malfunctioning T.O.R.S. could result in
loss of control.
ESU11892
[EWS00362]
Checking the air filter
Check that there is no snow under the air filter
element frame after each ride. In addition,
snow may need to be cleaned during a ride
depending on the riding conditions.
1. Remove the front cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT) or open
the shroud (PZ50VT / PZ50MP), and
then remove the air filter case cover.
(See page 53 for removal procedures.)
2. Unhook the air filter element frame fasteners.
1. Throttle lever pivot
2. Engine stop switch housing
3. Throttle lever
The T.O.R.S. will be activated and the
engine speed will be limited to less than
the clutch engagement speed. (See page
85 for the clutch engagement speed.)
WARNING! If the engine speed does
not decrease to less than the clutch
engagement speed, stop the engine
by turning the main switch to the off
position and consult a Yamaha dealer.
3. Lift up the air filter element frame and
check the air filter element. If there is any
snow on the air filter element, remove the
element and brush off the snow, and then
install the air filter element.
59
Page 68
Periodic maintenance and adjustment
4. Place the air filter element frame in the
original position, and then hook the fasteners onto the frame.
5. Install the air filter case cover, and then
install the front cover (PZ50 / PZ50RT /
PZ50GT / PZ50MT) or close the shroud
(PZ50VT / PZ50MP).
ESU11931
High-altitude settings
Operating at high altitude reduces the performance of a gasoline engine about 3% for every 305 m (1000 ft) of elevation. This is
because there is less air as altitude increases.
Less air means less oxygen available for
combustion.
Your snowmobile utilizes an electronic fuel injection system that delivers the optimal air/fuel ratio required by the engine. Therefore, the
fuel injection system does not need to be adjusted, even for operation at high altitude.
Remember:
Less air at higher altitude means there is less
horsepower available, even with the optimal
air/fuel ratio. Expect acceleration and top
speed to be reduced at higher altitudes.
To overcome operating with less power at
high altitudes, your snowmobile may also require different settings for the drive chain
gears and V-belt clutch to avoid poor performance and rapid wear. If you plan to operate
your snowmobile at an altitude different from
the area where you bought it, be sure to consult a Yamaha dealer. The dealer can tell you
if there are any changes necessary for the altitude where you plan to ride. NOTICE: The
drive chain gears and V-belt clutch should
be adjusted when operating above a high
altitude of 900 m (3000 ft). Consult a
Yamaha dealer.
[ECS00431]
ESU11950
Valve clearance
The valve clearance changes with use, resulting in improper air-fuel mixture and/or engine
noise. To prevent this from occurring, the
valve clearance must be adjusted by a
Yamaha dealer at the intervals specified in
the periodic maintenance chart.
ESU11983
Engine oil and oil filter cartridge
The engine oil level should be checked before
each use. In addition, the oil must be changed
and the oil filter cartridge replaced at the intervals specified in the periodic maintenance
and lubrication chart.
EWS00370
WARNING
Engine oil is extremely hot immediately after the engine is turned off. Coming into
contact with or getting any engine oil on
your clothes could result in burns.
ECS00440
NOTICE
● Do not run the engine with too much or
not enough oil in the oil tank. Oil could
spray out or the engine could be damaged.
● Be sure to change the engine oil after
the first 800 km (500 mi) of operation,
and every 4000 km (2500 mi) thereafter
or at the start of a new season, otherwise the engine will wear quickly.
● The oil filter cartridge should be re-
placed every 20000 km (12000 mi) of operation. Have a Yamaha dealer replace
the oil filter cartridge.
To check the engine oil level
1. Place the snowmobile on a level surface
and apply the parking brake.
60
Page 69
Periodic maintenance and adjustment
2. Start the engine, warm it up for 10–15
minutes, and then turn it off.
TIP
● The engine can also be warmed up by driv-
ing the snowmobile for 10–15 minutes.
● After driving the snowmobile, allow the en-
gine to idle for at least 10 seconds before
turning it off.
3. Remove the right side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or open
the shroud and remove the right upper
cover and the right side cover (PZ50VT /
PZ50MP). (See page 53 for removal procedures.)
4. Disconnect the oil level gauge coupler.
NOTICE: Disconnect the oil level
gauge coupler before removing the oil
filler cap, otherwise the cable could
twist and break.
1. Oil level gauge coupler
2. Oil filler cap
[ECS00452]
5. Remove the oil filler cap, wipe the dipstick
clean, insert it back into the oil filler hole
(without screwing it in), and then remove
it again to check the oil level.
1. Oil filler cap
2. Dipstick
TIP
The engine oil should be between the “H” and
“L” level marks on the dipstick.
1. “H” level mark
2. “L” level mark
6. If the engine oil is below the “L” level
mark, add sufficient oil of the recommended type to raise it to the “H” level
mark. (See page 85 for the recommended oil.) NOTICE: When adding the en-
gine oil, be careful not to fill above the
“H” level mark on the dipstick. Use
only the recommended oil. (See page
85.) Make sure that no foreign material
enters the engine oil tank.
[ECS00462]
61
Page 70
Periodic maintenance and adjustment
7. Insert the dipstick into the oil filler hole,
and then tighten the oil filler cap.
8. Connect the oil level gauge coupler.
9. Install the right side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or install
the right side cover and the right upper
cover, and then close the shroud
(PZ50VT / PZ50MP).
To change the engine oil (without oil filter cartridge replacement)
1. Place the snowmobile on a level surface,
and apply the parking brake.
2. Start the engine, warm it up for several
minutes, and then turn it off.
3. Remove the right side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or open
the shroud and remove the right upper
cover and the right side cover (PZ50VT /
PZ50MP). (See page 53 for removal procedure.)
4. Remove the bottom panel and the right
lower cover.
1. Right lower cover
5. Place an oil pan under the oil tank to collect the used oil.
6. Disconnect the oil level gauge coupler.
1. Bottom panel
62
1. Oil level gauge coupler
2. Oil filler cap
7. Remove the oil filler cap and drain bolt to
drain the oil from the oil tank.
1. Engine oil drain bolt (oil tank)
8. Place an oil pan under the engine to collect the used oil.
Page 71
Periodic maintenance and adjustment
9. Remove the engine oil drain bolt to drain
the oil from the crankcase.
1. Engine oil drain bolt (crankcase)
TIP
Dispose of used oil according to local regulations.
10. Install the engine oil drain bolts, and then
tighten them to the specified torques.
Tightening torques:
Engine oil drain bolt (crankcase):
30 Nm (3.0 m·kgf, 22 ft·lbf)
Engine oil drain bolt (oil tank):
16 Nm (1.6 m·kgf, 11 ft·lbf)
11. Add 1.5 L (1.59 US qt, 1.32 Imp.qt) of the
recommended engine oil to the oil tank,
and then install and tighten the oil filler
cap.
12. Start the engine, warm it up for several
minutes, and then turn it off.
13. Add sufficient oil of the recommended
type to raise it to the “H” level mark on the
dipstick. (See above for checking procedures.) NOTICE: When adding the en-
gine oil, be careful not to fill above the
“H” level mark on the dipstick. Use
only the recommended oil. (See page
85.) Make sure that no foreign material
enters the engine oil tank.
[ECS00462]
Recommended engine oil:
See page 85.
Oil quantity:
With oil filter cartridge replacement:
2.6 L (2.78 US qt, 2.31 Imp.qt)
Without oil filter cartridge replacement:
2.4 L (2.59 US qt, 2.16 Imp.qt)
Total amount:
3.0 L (3.17 US qt, 2.64 Imp.qt)
14. Start the engine, and then let it idle for
several minutes while checking it for oil
leakage. If oil is leaking, immediately turn
the engine off and make sure that the engine oil drain bolt, oil tank drain bolt, and
the oil filler cap are installed correctly.
15. Turn the engine off, and then connect the
oil level gauge coupler.
16. Install the bottom panel and the right lower cover.
17. Install the right side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or install
the right side cover and the right upper
cover, and then close the shroud
(PZ50VT / PZ50MP). NOTICE: If oil is
leaking or the oil level warning indicator comes on when the engine is running, immediately turn the engine off
and have a Yamaha dealer check the
snowmobile. Continuing to operate
the engine under such conditions
could cause severe engine damage.
[ECS00471]
63
Page 72
Periodic maintenance and adjustment
ESU12043
Cooling system
The coolant level should be checked before
each ride. In addition, the cooling system
must be bled at the intervals specified in the
periodic maintenance and lubrication chart.
EWS00380
WARNING
Do not remove the coolant reservoir cap
when the engine is hot. Scalding hot fluid
and steam may be blown out under pressure, which could cause serious injury.
When the engine has cooled, place a thick
rag or towel over the coolant reservoir
cap, and slowly rotate the cap counterclockwise to the detent. This procedure allows any residual pressure to escape.
When the hissing sound has stopped,
press down on the cap while turning counterclockwise and remove it.
To check the coolant level
1. Place the snowmobile on a level surface
and apply the parking brake.
2. Remove the top cover (PZ50 / PZ50RT /
PZ50GT / PZ50MT) or open the shroud
(PZ50VT / PZ50MP), and then remove
the right upper cover. (See page 53 for
removal procedures.)
3. Check the coolant level in the coolant
reservoir when the engine is cold. If the
coolant level is below the “COLD LEVEL”
mark, add soft water until it reaches the
“COLD LEVEL” mark. (See the following
section “Replenishing the coolant” for
more details.) NOTICE: Hard water or
salt water is harmful to the engine
parts. You may use boiled or distilled
water, if soft water is not available.
Tap water can be used temporarily in
an emergency.
[ECS00491]
1. “COLD LEVEL” mark
4. Install the right upper cover, and then install the top cover (PZ50 / PZ50RT /
PZ50GT / PZ50MT) or close the shroud
(PZ50VT / PZ50MP).
Bleeding the cooling system
The cooling system must be bled if the coolant reservoir becomes empty, if air can be
seen in the cooling system, or if there is a
cooling system leak. Consult a Yamaha dealer.
ECS00500
NOTICE
Operating the engine with an improperly
bled cooling system can cause overheating and severe engine damage.
Replenishing the coolant
1. Remove the top cover (PZ50 / PZ50RT /
PZ50GT / PZ50MT) or open the shroud
(PZ50VT / PZ50MP), and then remove
the right upper cover. (See page 53 for
removal procedures.)
2. Remove the coolant reservoir cap, add
the recommended coolant until it reaches
the “COLD LEVEL” mark, and then install
the cap.
64
Page 73
Periodic maintenance and adjustment
1. “COLD LEVEL” mark
2. Coolant reservoir cap
Recommended antifreeze:
High-quality ethylene glycol antifreeze
containing corrosion inhibitors
Antifreeze and water mixing ratio:
3:2
Total amount:
PZ50 3.60 L (3.81 US qt, 3.17 Imp.qt)
PZ50GT 3.60 L (3.81 US qt,
3.17 Imp.qt)
PZ50MP 3.70 L (3.91 US qt,
3.26 Imp.qt)
PZ50MT 3.60 L (3.81 US qt,
3.17 Imp.qt)
PZ50RT 3.60 L (3.81 US qt,
3.17 Imp.qt)
PZ50VT 3.70 L (3.91 US qt,
3.26 Imp.qt)
3. Start the engine, allow it to idle for several
minutes, and then turn it off.
4. Check for any coolant leakage.
TIP
If you find any leaks, consult a Yamaha dealer.
5. Install the right upper cover, and then install the top cover (PZ50 / PZ50RT /
PZ50GT / PZ50MT) or close the shroud
(PZ50VT / PZ50MP).
ESU12081
V-belt
EWS00401
WARNING
● Coming in contact with the rotating V-
belt or clutch parts can cause severe injury or death. Never run the engine with
the drive guard removed.
● Make sure that the drive guard is tight-
ened securely before operating the
snowmobile to protect against severe
injury or death from a broken V-belt or
other part should it come off the snowmobile while it is in operation.
ECS00830
NOTICE
Never run the engine with the V-belt removed. Clutch components can be damaged.
The V-belt should be checked before each
ride.
To check the V-belt
1. Remove the left side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or open
the shroud and remove the left upper
cover and the left side cover (PZ50VT /
PZ50MP). (See page 53 for removal procedure.)
2. Remove the drive guard.
3. Check the V-belt for wear and damage.
Replace if necessary.
65
Page 74
Periodic maintenance and adjustment
TIP
Apply the parking brake before replacing the
V-belt.
1. Remove the left side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or open
the shroud and remove the left upper
cover and the left side cover (PZ50VT /
PZ50MP). (See page 53 for removal pro-
1. V-belt wear limit
New V-belt width:
34.1 mm (1.34 in)
V-belt wear limit width:
32.5 mm (1.28 in)
4. Install the drive guard.
5. Install the left side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or install
the left side cover and the left upper cover, and then close the shroud (PZ50VT /
PZ50MP).
To replace and adjust the V-belt
EWS00421
WARNING
● When installing a new V-belt, make sure
that it is positioned properly. Otherwise,
the V-belt clutch engagement speed will
be changed and the snowmobile may
move unexpectedly when the engine is
started, which could cause an accident.
● Have a Yamaha dealer make this adjust-
ment.
ECS00520
NOTICE
To ensure proper clutch performance as
the V-belt wears, it is necessary to adjust
the gap between the secondary fixed
sheave and the secondary sliding sheave
by changing the positions of the spacers.
Have a Yamaha dealer make this adjustment.
cedure.)
2. Remove the drive guard.
3. Rotate the secondary sliding sheave
clockwise and push it so that it separates
from the secondary fixed sheave.
1. Secondary sliding sheave
2. Secondary fixed sheave
4. Pull the V-belt up over the secondary
fixed sheave.
1. V-belt
5. Remove the V-belt from the secondary
sheave assembly and primary sheave
assembly.
66
Page 75
Periodic maintenance and adjustment
6. Install the new V-belt over the primary
sheave assembly.
7. Rotate the secondary sliding sheave
clockwise and push it so that it separates
from the secondary fixed sheave.
1. Secondary sliding sheave
2. Secondary fixed sheave
8. Install the V-belt between the secondary
fixed sheave and the secondary sliding
sheave.
2. Remove the right side cover. (See page
53 for removal procedures.)
3. Remove the dipstick, wipe it off with a
clean rag, and then insert it back into the
filler hole.
1. Dipstick
4. Remove the dipstick and check that the
oil level is within the range shown at the
bottom of the dipstick. If the oil does not
reach the bottom of the dipstick, add sufficient oil of the recommended type to
raise it to the correct level. NOTICE:
Make sure that no foreign material enters the drive chain housing.
[ECS00531]
1. V-belt
9. Install the drive guard.
10. Install the left side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or install
the left side cover and the left upper cover, and then close the shroud (PZ50VT /
PZ50MP).
ESU12124
Drive chain housing
To check the drive chain housing oil level
1. Place the snowmobile on a level surface
and apply the parking brake.
1. Oil level range
67
Page 76
Periodic maintenance and adjustment
3. Turn the chain tension adjusting bolt
clockwise until it is finger tight, and then
loosen it 1/4 turn.
4. While holding the chain tension adjusting
bolt with a wrench, tighten the locknut to
the specified torque.
Tightening torque:
Locknut:
25 Nm (2.5 m·kgf, 18 ft·lbf)
Recommended drive chain oil:
SAE 75W or 80W API GL-3 Gear oil
5. Install the dipstick, making sure to align
the notch in the dipstick handle with the
projection on the drive chain housing.
1. Locknut
2. Chain tension adjusting bolt
5. Install the right side cover.
ESU13430
Brake and parking brake
EWS00440
1. Notch
2. Projection
6. Install the right side cover.
TIP
Continue with steps 7 and 8 for models with
reverse only.
7. Release the parking brake.
8. Drive the snowmobile for several minutes
at more than 20 km/h (12 mi/h), and then
repeat steps 1–7 to check the oil level
again.
To adjust the chain tension
1. Remove the right side cover. (See page
53 for removal procedures.)
2. Loosen the locknut.
WARNING
● A soft, spongy feeling in the brake lever
indicates a failure in the brake system.
● Do not operate the snowmobile if you
find any problems in the brake system.
You could lose braking ability, which
could lead to an accident. Ask a Yamaha
dealer to inspect and repair the brake
system.
ECS00060
NOTICE
Make sure that the brake lever end does
not project out over the handlebar end.
This will help prevent brake lever damage
when the snowmobile is placed on its side
for service.
68
Page 77
Periodic maintenance and adjustment
Test the brake at a low speed when starting
out to make sure that it is working properly. If
the brake does not provide proper braking
performance, inspect the brake for wear or
brake fluid leakage. (See the following section
for more details.)
Checking the brake pads
Check the brake pads for wear according to
the following procedure.
1. Remove the right side cover. (See page
53 for removal procedures.)
2. Check the brake pads for wear.
If the brake pads reach the wear limit, ask
a Yamaha dealer to replace them.
1. Brake pad wear indicator
2. Brake pad wear limit
Brake pad wear limit:
4.7 mm (0.19 in)
1. Parking brake pad wear limit
Parking brake pad wear limit:
1.2 mm (0.047 in)
3. Install the right side cover.
To adjust the parking brake
As the parking brake pads wear, adjustment
may be necessary to ensure proper brake
performance.
1. Remove the right side cover. (See page
53 for removal procedures.)
2. Loosen the parking brake pad locknut
and the parking brake pad adjusting bolt.
3. Loosen the parking brake cable locknut.
4. Turn the parking brake cable adjusting
bolt in or out to adjust the cable length.
3. Install the right side cover.
Checking the parking brake pads
Check the parking brake pads for wear according to the following procedure.
1. Remove the right side cover. (See page
53 for removal procedures.)
2. Check the parking brake pads for wear by
measuring the thickness of the pads. If
the parking brake pads reach the wear
limit, ask a Yamaha dealer to replace
them.
1. Parking brake pad locknut
2. Parking brake pad adjusting bolt
3. Parking brake cable locknut
4. Parking brake cable adjusting bolt
5. Parking brake cable length
69
Page 78
Periodic maintenance and adjustment
Parking brake cable length:
43.5–46.5 mm (1.713–1.831 in)
5. Tighten the parking brake cable locknut.
6. Turn the parking brake pad adjusting bolt
in or out to adjust the clearance between
the parking brake pads and the brake
disc.
4
3
1. Parking brake pad
2. Brake disc
3. Parking brake pad adjusting bolt
4. Parking brake pad locknut
Parking brake pad to brake disc clearance (a) + (b):
1.5–2.0 mm (0.059–0.079 in)
7. Tighten the parking brake pad locknut.
8. Install the right side cover.
Checking the brake fluid level
EWS00460
WARNING
Be careful that water does not enter the
master cylinder when refilling. Water will
significantly lower the boiling point of the
fluid and may result in vapor lock.
If the brake fluid level goes down, consult
a Yamaha dealer.
ECS00550
NOTICE
Brake fluid may deteriorate painted surfaces or plastic parts. Never spill any fluid.
If any is spilled, clean it up immediately.
Place the snowmobile on a level surface.
Check that the brake fluid is above the lower
level and replenish when necessary.
1. Lower level
Specified brake fluid:
DOT 4
Changing the brake fluid
EWS00471
WARNING
Make sure that the brake fluid and the following parts are replaced by a Yamaha
dealer.
Brake fluid replacement is necessary when
the following components are replaced during
the periodic maintenance or if they are damaged or leaking.
● All oil seals of the master cylinder and cali-
per cylinder
● The brake hose
ESU12142
Skis and ski runners
Check the skis and ski runners for wear and
damage. Replace if necessary.
70
Page 79
Periodic maintenance and adjustment
1. Ski runner wear limit
1. Ski wear limit
Ski runner wear limit:
6 mm (0.2 in)
Ski wear limit:
PZ50 13 mm (0.5 in)
PZ50GT 13 mm (0.5 in)
PZ50MP 24 mm (0.9 in)
PZ50MT 24 mm (0.9 in)
PZ50RT 13 mm (0.5 in)
PZ50VT 13 mm (0.5 in) (CAN)
PZ50VT 24 mm (0.9 in) (FIN)(SWE)
2. Check the following for ski alignment:
● Skis are facing forward.
● Ski toe-out (distance A – distance B) is
within specification.
1. Distance A
2. Distance B
Ski toe-out (distance A – distance B):
0.0–15.0 mm (0.00–0.59 in)
3. If the alignment is not correct, consult a
Yamaha dealer.
ESU12151
Steering system
Check the handlebar for excessive free play.
To check the handlebar
1. Push the handlebar up and down and
back and forth.
2. Turn the handlebar slightly to the right
and left.
ECS00560
NOTICE
Avoid scratching the skis when loading
and unloading the snowmobile, when
riding in areas with little or no snow, or on
sharp edges such as concrete, curbs, etc.
This will wear or damage the skis.
To align the skis
1. Turn the handlebar so the skis face
straight ahead.
If excessive free play is felt, consult a Yamaha
dealer.
71
Page 80
Periodic maintenance and adjustment
ESU12173
Drive track and slide runners
Drive track
EWS00480
WARNING
A broken track, track fittings or debris
thrown by the drive track could be dangerous to an operator or bystanders. Observe
the following precautions:
● Do not allow anyone to stand behind the
snowmobile when the engine is running.
● When the rear of the snowmobile is
raised to allow the drive track to spin, a
suitable stand must be used to support
the rear of the snowmobile. Never allow
anyone to hold the rear of the snowmobile off the ground to allow the drive
track to spin. Never allow anyone near a
rotating drive track.
● Inspect the drive track condition fre-
quently. Replace damaged slide metal.
Replace the drive track if it is damaged
to the depth where fabric reinforcement
material is visible or support rods are
broken. Otherwise, track damage or failure could result in loss of braking ability
and snowmobile control, which could
cause an accident.
Checking the drive track
EWS00490
WARNING
Do not operate the snowmobile if you find
damage to the drive track, or if it has been
maladjusted. Drive track damage or failure
could result in loss of braking ability and
snowmobile control, which could cause
an accident.
Measuring the drive track deflection
1. Lay the snowmobile on its side.
2. Measure the drive track deflection with a
spring scale. Pull at the center of the drive
track with a force of 100 N (10 kgf, 22 lbf).
1. Spring scale
TIP
Measure the gap between the slide runner
and the edge of the track window. Measure
both sides.
Check the drive track for deflection, wear, and
damage.
Adjust or replace if necessary. (See the following section for more details.)
72
1. Drive track deflection
Page 81
Periodic maintenance and adjustment
Standard drive track deflection:
30.0–35.0 mm (1.18–1.38 in)
3. If the deflection is incorrect, adjust the
drive track.
Adjusting the drive track
1. Lift the rear of the snowmobile onto a suitable stand to raise the drive track off the
ground.
2. Loosen the rear axle nut.
1. Rear axle nut
3. Start the engine and rotate the drive track
one or two turns. Stop the engine.
4. Check the drive track alignment with the
slide runners. If the alignment is incorrect,
align the drive track by turning the left and
right adjusting nuts.
Drive track
alignment
Right adjusting nut
1. Left adjusting nut
2. Right adjusting nut
Shifted to right
1. Forward
2. Gap
3. Slide runner
4. Drive track
5. Slide metal
Shifted to
right
Tur n i n Tur n o ut
Shifted to left
1. Slide runner
Drive track
alignment
Left adjusting
nut
Shifted to
right
Tur n o ut Tur n i n
Shifted to left
73
Page 82
Periodic maintenance and adjustment
Shifted to left
1. Forward
2. Gap
3. Slide runner
4. Drive track
5. Slide metal
5. Adjust the drive track deflection to specification. NOTICE: The right and left ad-
justing nuts should be turned an equal
amount.
Drive track
deflection
Left adjusting
nut
Right adjusting nut
[ECS00592]
More than
specified
Turn in Turn out
Turn in Turn out
Less than
specified
6. Recheck alignment and deflection. If necessary, repeat steps 3 to 5 until the proper adjustment is achieved.
7. Tighten the rear axle nut.
Rear axle nut tightening torque:
75 Nm (7.5 m·kgf, 54 ft·lbf)
Slide runners
Check the slide runners for wear and damage.
If the slide runners reach the wear limit, they
should be replaced.
1. Slide runner
2. Wear limit height
Slide runner wear limit height:
10.5 mm (0.41 in)
ECS00350
NOTICE
Ride on fresh snow frequently. Operating
on ice or hard-packed snow will rapidly
wear the slide runners.
ESU12180
High-profile pattern drive track
(PZ50MT)
This snowmobile is originally equipped with a
51-mm (2.0-in) high-profile pattern drive track
specifically for use in deep snow riding conditions.
Therefore, avoid prolonged operation on hard
surfaces such as ice, hard-packed snow, dirt,
etc., to extend the life of the track and slide
runners.
74
Page 83
Periodic maintenance and adjustment
ECS00610
NOTICE
● Only use in deep snow riding condi-
tions.
● Operation on areas with light snowfall,
ice, hard-packed snow, dirt, or grass will
result in rapid wear or damage to the
track and slide runners from lack of
snow which serves as a lubricant.
ESU12193
Lubrication
Lubricate the following points with the specified grease.
EWS00511
WARNING
Do not grease the throttle cable because it
could become frozen, which could cause
loss of control. Apply a dab of grease onto
the cable end only.
1. Throttle cable end
Lubricants:
Brake lever:
Silicone grease
Other lubrication points:
Low-temperature grease
1. Lubrication point
1. Lubrication point
1
1. Lubrication point
ESU12241
Replacing a headlight bulb
1. Remove the top cover (PZ50 / PZ50RT /
PZ50GT / PZ50MT) or open the shroud
(PZ50VT / PZ50MP). (See page 53 for
removal procedures.)
2. Disconnect the headlight coupler.
3. Remove the bulb holder cover.
75
Page 84
Periodic maintenance and adjustment
PZ50 / PZ50RT / PZ50GT / PZ50MT
1. Headlight coupler
2. Bulb holder cover
PZ50VT / PZ50MP
1. Headlight coupler
2. Bulb holder cover
4. Unhook the bulb holder by pushing it in,
then downward.
away from the glass part of the bulb or
its life and illumination will be affected. If the glass is oil stained, thoroughly clean it with a cloth moistened
with alcohol or lacquer thinner.
1. Do not touch the glass part of the bulb.
[ECS00621]
Bulb type:
Halogen bulb
7. Install the bulb holder cover, and then
connect the headlight coupler.
8. Install the top cover (PZ50 / PZ50RT /
PZ50GT / PZ50MT) or close the shroud
(PZ50VT / PZ50MP).
ESU12280
Adjusting the headlight beams
Turn the headlight beam adjusting screws in
or out to adjust the headlight beams. The
headlight beams move as follows depending
on the turning direction of the headlight beam
adjusting screws.
● Direction (a): Down and to the left
● Direction (b): Up and to the right
● Direction (c): Down and to the right
● Direction (d): Up and to the left
1. Bulb holder
5. Remove the bulb.
6. Install the new bulb, and then hook the
bulb holder onto the headlight unit.
NOTICE: Keep oil and your hands
76
Page 85
Periodic maintenance and adjustment
1. Headlight beam adjusting screw
ESU12290
Fittings and fasteners
Check the tightness of the fittings and fasteners.
Tighten in proper sequence and torque if necessary.
ESU12303
Battery
This model is equipped with a VRLA (Valve
Regulated Lead Acid) battery. There is no
need to check the electrolyte or to add distilled
water. However, the battery lead connections
need to be checked and, if necessary, tightened.
EWS00540
WARNING
Battery electrolyte is poisonous and dangerous. It contains sulfuric acid and can
cause severe burns. Avoid contact with
skin, eyes, or clothing.
ANTIDOTE:
● EXTERNAL: Flush with water.
● INTERNAL: Drink large quantities of wa-
ter or milk. Follow with milk of magnesia, beaten egg, or vegetable oil. Call
physician immediately.
● EYES: Flush with water for 15 minutes
and get prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes, etc. away. Ventilate when charging or using in an enclosed space. Always shield your eyes
when working near batteries.
KEEP OUT OF THE REACH OF CHILDREN.
Charge or have a Yamaha dealer charge the
battery as soon as possible if it seems to have
discharged. Keep in mind that the battery
tends to discharge more quickly if the snowmobile is equipped with electrical accessories.
EWS00610
WARNING
● Never smoke around the battery while it
is being charged. Sparks may ignite the
hydrogen gas created by the battery.
● Disconnect the negative lead first, then
the positive lead from the battery.
● Connect the positive lead first, then the
negative lead to the battery when installing the battery.
● Never connect the battery to or discon-
nect it from the snowmobile while it is
being charged. Sparks may ignite the
hydrogen gas created by the battery.
● Make sure that the battery terminals are
tight.
ECS00842
NOTICE
● To charge a VRLA (Valve Regulated
Lead Acid) battery, a special (constantvoltage) battery charger is required. If
you do not have access to a constantvoltage battery charger, have a Yamaha
dealer charge your battery. Using a conventional battery charger will damage
the battery.
● Do not charge the battery quickly.
77
Page 86
Periodic maintenance and adjustment
ESU12353
Replacing a fuse
EWS00550
WARNING
Be sure to use the specified fuse. A wrong
fuse could cause electrical system damage or A FIRE HAZARD.
ECS00631
NOTICE
Be sure to turn the main switch to the off
position and disconnect the negative battery lead to prevent accidental short-circuiting.
1. Remove the right side cover. (See page
53 for removal procedures.)
2. Disconnect the negative battery lead by
removing the bolt.
1
1. Main fuse
2. Spare fuse
3. Fuel injection system fuse
PZ50
1. Negative battery lead
3. Replace the blown fuse with one of the
proper amperage.
78
1. “HEAD” (headlight) fuse
2. “SIG” (signal) fuse
3. “GEAR” (electric shift reverse system) fuse
4. “IGN” (ignition) fuse
5. “FAN” (radiator fan) fuse
6. Spare fuse
Page 87
Periodic maintenance and adjustment
PZ50RT / PZ50GT / PZ50MT / PZ50VT /
PZ50MP
1. “HEAD” (headlight) fuse
2. “SIG” (signal) fuse
3. “DC TERM” (auxiliary DC jack) fuse
4. “IGN” (ignition) fuse
5. “FAN” (radiator fan) fuse
6. “GEAR” (electric shift reverse system) fuse
7. Spare fuse
Specified fuses:
Main fuse:
40.0 A
Fuel injection system fuse:
10.0 A
“HEAD” (headlight) fuse:
20.0 A
“SIG” (signal) fuse:
7.5 A
“DC TERM” (auxiliary DC jack) fuse:
PZ50GT 3.0 A
PZ50MP 3.0 A
PZ50MT 3.0 A
PZ50RT 3.0 A
PZ50VT 3.0 A
“IGN” (ignition) fuse:
20.0 A
“FAN” (radiator fan motor) fuse:
15.0 A
“GEAR” (electric shift reverse system)
fuse:
4.0 A
Spare fuses:
20.0 A
15.0 A
7.5 A
4.0 A
3.0 A (PZ50RT / PZ50GT /
PZ50MT / PZ50VT / PZ50MP)
4. Connect the negative battery lead by installing the bolt.
5. Install the right side cover.
TIP
If the fuse immediately blows again, ask a
Yamaha dealer to inspect the snowmobile.
79
Page 88
Troubleshooting
ESU12396
Engine turns over but does not start
1. Fuel system
● No fuel supplied to combustion cham-
ber
• No fuel in tank:
Supply fuel.
↓
• Clogged fuel line:
Clean fuel line.
↓
• Clogged injector:
Ask a Yamaha dealer to inspect.
● Fuel supplied to combustion chamber
• Flooded engine:
Crank engine or wipe the spark plugs
dry.
2. Electrical system
● Poor spark or no spark
• Spark plugs are dirty with carbon or
are wet:
Remove carbon or wipe the spark
plugs dry. Replace if necessary.
↓
• Faulty ignition system:
Ask a Yamaha dealer to inspect.
↓
• T.O.R.S. malfunction:
Disconnect the throttle switch connectors and connect the wire harness connectors together to bypass
the T.O.R.S. WARNING! Before by-
passing the T.O.R.S., make sure
that the throttle returns properly
to the fully closed position. The
T.O.R.S. is an important safety device; in the case of a malfunction,
take the snowmobile to a Yamaha
dealer immediately for repair.
[EWS00561]
3. Compression
● Insufficient
• Loose cylinder head nuts:
Tighten nuts properly.
↓
• Worn or damaged gasket:
Replace gasket.
↓
• Worn or damaged piston and cylinder:
Ask a Yamaha dealer to inspect.
Discharged battery
If the battery is discharged, the engine can be
started using a fully-charged 12-volt battery
and jumper cables.
EWS00580
WARNING
● Connect the jumper cables only to the
battery terminals. Do not connect them
to the frame or any wire or other lead.
● When connecting the jumper cables, do
not contact the jumper cables to each
other or to the frame or any metal part of
the snowmobile. This can cause electrical system damage or A FIRE HAZARD.
1. Apply the parking brake and turn the
main switch to the off position.
2. Remove the right side cover. (See page
53 for removal procedures.)
3. Connect the red (+) jumper cable to the
positive (+) terminal of the discharged
battery.
80
Page 89
Troubleshooting
4. Connect the other end of the red (+)
jumper cable to the positive (+) terminal
of the booster battery.
5. Connect the black (–) jumper cable to the
negative (–) terminal of the booster battery.
6. Connect the other end of the black (–)
jumper cable to the negative (–) terminal
of the discharged battery. NOTICE: Do
not reverse the connections! Make
sure that all connections are secure
and correct before attempting to start
the engine. Any wrong connection
could damage the electrical system.
[ECS00671]
7. Start the engine.
8. Disconnect the black (–) jumper cable
from the negative (–) terminal of the discharged battery.
9. Disconnect the black (–) jumper cable
from the negative (–) terminal of the battery used to jump start the engine.
10. Disconnect the red (+) jumper cable from
the positive (+) terminal of the battery
used to jump start the engine.
11. Disconnect the red (+) jumper cable from
the positive (+) terminal of the discharged
battery.
12. Install the right side cover.
Electric starter does not operate or
operates slowly
1. Engine stop switch is pushed in: Pull it
out.
2. Faulty wire connections: Check connections or ask a Yamaha dealer to inspect.
3. Discharged battery: Charge battery or
see “Discharged battery” above.
4. Seized engine: Seizure is caused by poor
lubrication, inadequate fuel, or an air
leak. Ask a Yamaha dealer to inspect.
Engine power is low
1. Low coolant temperature indicator light is
flashing: Warm the engine up.
2. Faulty spark plugs: Clean or replace the
spark plugs.
3. Improper fuel flow: See “Fuel system”
above.
4. Incorrect V-belt clutch settings for altitude
or conditions: Ask a Yamaha dealer to inspect.
Engine constantly backfires or misfires
1. Faulty spark plugs: Replace the spark
plugs.
2. Clogged fuel system: See “Fuel system”
above.
3. Malfunctioning T.O.R.S.: See “Electrical
system” above.
Engine overheats
1. Insufficient coolant: Add coolant.
81
Page 90
Troubleshooting
2. Air in cooling system: Bleed the cooling
system or ask a Yamaha dealer to inspect.
3. Leaking coolant: Ask a Yamaha dealer to
inspect.
Snowmobile does not move
1. Malfunctioning V-belt clutch: Ask a
Yamaha dealer to inspect.
2. Drive track does not move: Foreign object is caught in the drive track, or slide
runners have melted to the slide metal
due to lack of lubrication.
3. Tight, loose, or broken drive chain: Ask a
Yamaha dealer to inspect.
V-belt twists
1. Improper V-belt: Replace with the correct
V-belt.
2. Incorrect V-belt clutch offset: Ask a
Yamaha dealer to inspect.
3. Loose or broken engine mount(s): Ask a
Yamaha dealer to inspect.
V-belt slips or becomes extremely hot
1. Oily or dirty V-belt or primary and secondary sheave assembly surfaces: Clean.
2. Problem with the driveline: See “V-belt
twists” above.
Engine does not upshift or downshift
properly or engages harshly
1. Worn or damaged V-belt: Replace the Vbelt or ask a Yamaha dealer to inspect.
2. Incorrect V-belt clutch settings for altitude
or conditions: Ask a Yamaha dealer to inspect.
3. Worn or sticking primary sheave assembly: Ask a Yamaha dealer to inspect.
4. Worn or sticking secondary sheave assembly: Ask a Yamaha dealer to inspect.
Noise or excessive vibration in drive
chain and sprockets
1. Broken V-belt clutch components: Ask a
Yamaha dealer to inspect.
2. Worn or damaged bearings: Ask a
Yamaha dealer to inspect.
3. Worn or damaged V-belt with flat spots:
Replace.
4. Worn or damaged idler wheels or shafts:
Ask a Yamaha dealer to inspect.
5. Worn or damaged drive track: Ask a
Yamaha dealer to inspect.
82
Page 91
Storage
ESU12442
Long-term storage of your snowmobile will require some preventive procedures to guard
against deterioration.
Engine
Perform the following steps to protect the cylinders, piston rings, etc., from corrosion.
1. Remove the spark plug caps and spark
plugs.
2. Pour a teaspoonful of engine oil into each
spark plug bore.
3. Install the spark plug caps onto the spark
plugs, and then place the spark plugs on
the cylinder head so that the electrodes
are grounded. (This will limit sparking
during the next step.)
4. Turn the engine over several times with
the starter. (This will coat the cylinder
walls with oil.) WARNING! To prevent
damage or injury from sparking, make
sure to ground the spark plug electrodes while turning the engine over.
[EWS00601]
5. Remove the spark plug caps from the
spark plugs, and then install the spark
plugs and the spark plug caps.
Fuel
Add a fuel stabilizer to the fuel tank to help
prevent fuel oxidation and gum and varnish
deposits, and to inhibit corrosion in the fuel
system and injectors. In areas where oxygenated fuel (gasohol) is used, consult a Yamaha
dealer.
Chassis
1. Lubricate all specified points with grease
or SAE 5W-30 engine oil. (See page 75
for detailed information about the lubrication points.)
2. Loosen the drive track and block up the
chassis so that the track is suspended
above the ground.
3. Clean the exterior of the snowmobile and
apply a rust inhibitor.
4. Store the snowmobile in a dry, well-ventilated place with a porous cover placed
over it.
5. The snowmobile must remain in an upright position when stored, transported,
or operated.
ECS00870
NOTICE
● Improper cleaning can damage plastic
parts such as shroud, covers, windshields, headlight lenses, meter lenses,
etc. Use only a soft, clean cloth or
sponge with mild detergent and water to
clean plastic.
● Do not use any harsh chemical products
on plastic parts. Be sure to avoid using
cloths or sponges which have been in
contact with strong or abrasive cleaning
products, solvent or thinner, fuel (gasoline), rust removers or inhibitors, brake
fluid, antifreeze or electrolyte.
● Do not use high-pressure washers or
steam-jet cleaners since they cause water seepage and deterioration in the following areas: seals (of the slide rail
suspension, front suspension and
brakes), electric components (couplers,
connectors, instruments, switches and
lights), breather hoses and vents.
● For snowmobiles equipped with a wind-
shield: Do not use strong cleaners or
hard sponges as they will cause dulling
or scratching. Some cleaning compounds for plastic may leave scratches
on the windshield. Test the product on a
small hidden part of the windshield to
make sure that it does not leave any
marks. If the windshield is scratched,
use a quality plastic polishing compound after washing.
83
Page 92
Storage
Battery
Remove the battery from the snowmobile.
Store it in a cool, dry place that is above 0 °C
(32 °F), but less than 30 °C (90 °F). Check the
condition of the battery once a month, and
charge it as necessary. NOTICE: Always
keep the battery charged. Storing a discharged battery can cause permanent battery damage.
TIP
Before installing the battery, have a Yamaha
dealer inspect and fully charge it.
[ECS00691]
84
Page 93
Specifications
ESU12466
Dimensions:
Overall length:
PZ50 2820 mm (111.0 in)
PZ50GT 2820 mm (111.0 in)
PZ50MP 3160 mm (124.4 in)
PZ50MT 3195 mm (125.8 in)
PZ50RT 2820 mm (111.0 in)
PZ50VT 3150 mm (124.0 in) (CAN)
PZ50VT 3160 mm (124.4 in) (FIN)(SWE)
Overall width:
PZ50 1215 mm (47.8 in)
PZ50GT 1215 mm (47.8 in)
PZ50MP 1265 mm (49.8 in)
PZ50MT 1165 mm (45.9 in)
PZ50RT 1215 mm (47.8 in)
PZ50VT 1215 mm (47.8 in) (CAN)
PZ50VT 1265 mm (49.8 in) (FIN)(SWE)
Overall height:
PZ50 1190 mm (46.9 in)
PZ50GT 1340 mm (52.8 in)
PZ50MP 1380 mm (54.3 in)
PZ50MT 1190 mm (46.9 in)
PZ50RT 1190 mm (46.9 in)
PZ50VT 1380 mm (54.3 in)
Dry weight:
PZ50 216.0 kg (476 lb)
PZ50GT 222.0 kg (489 lb)
PZ50MP 263.0 kg (580 lb) (CAN)
PZ50MT 234.0 kg (516 lb) (CAN)
PZ50RT 222.0 kg (489 lb) (CAN)
PZ50VT 269.0 kg (593 lb) (CAN)
Mass in running order:
PZ50MP 305.0 kg (672 lb) (FIN)(RUS)(SWE)
PZ50MT 263.0 kg (580 lb) (FIN)(SWE)
PZ50RT 251.0 kg (553 lb) (FIN)(SWE)
PZ50VT 304.0 kg (670 lb) (FIN)(SWE)
Ski stance:
PZ50 1080 mm (42.5 in)
PZ50GT 1080 mm (42.5 in)
PZ50MP 1080 mm (42.5 in)
PZ50MT 980 mm (38.6 in)
PZ50RT 1080 mm (42.5 in)
PZ50VT 1080 mm (42.5 in)
Engine:
Type:
Liquid cooled 4-stroke, 10 valves
Cylinder arrangement:
Backward-inclined parallel 2-cylinder
Displacement:
499.0 cm³
Bore × stroke:
77.0 × 53.6 mm (3.03 × 2.11 in)
Idling speed:
1700–1900 r/min
Engine oil:
Recommended grade:
API service SG type or higher, JASO
standard MA
Type:
PZ50 YAMALUBE 4 0W-30, SAE 0W-30
PZ50GT YAMALUBE 4 0W-30, SAE 0W30
PZ50MP SAE 0W-30 (FIN)(RUS)(SWE)
PZ50MP YAMALUBE 4 0W-30, SAE 0W30 (CAN)
PZ50MT SAE 0W-30 (FIN)(SWE)
PZ50MT YAMALUBE 4 0W-30, SAE 0W30 (CAN)
PZ50RT SAE 0W-30 (FIN)(SWE)
PZ50RT YAMALUBE 4 0W-30, SAE 0W30 (CAN)
PZ50VT SAE 0W-30 (FIN)(SWE)
PZ50VT YAMALUBE 4 0W-30, SAE 0W30 (CAN)
Fuel injection:
Model × quantity:
TSK43 × 1
Manufacturer:
KEIHIN
Fuel:
Type:
PREMIUM UNLEADED GASOLINE
ONLY
Minimum pump octane (R+M)/2:
PZ50 91
PZ50GT 91
PZ50MP 91 (CAN)
PZ50MT 91 (CAN)
PZ50RT 91 (CAN)
PZ50VT 91 (CAN)
Minimum research octane:
PZ50MP 95 (FIN)(RUS)(SWE)
PZ50MT 95 (FIN)(SWE)
PZ50RT 95 (FIN)(SWE)
PZ50VT 95 (FIN)(SWE)
Starting system:
Electric starter
85
Page 94
Specifications
Noise level and vibration level:
Noise level SAE J1161 (Operational sound
level measurement procedure for snow
vehicles):
PZ50MP 65.0 dB(A) (FIN)(RUS)(SWE)
PZ50MT 64.0 dB(A) (FIN)(SWE)
PZ50RT 64.0 dB(A) (FIN)(SWE)
PZ50VT 61.0 dB(A) (FIN)(SWE)
Noise level SAE J192 (Exterior sound level
for snowmobiles):
PZ50MP 75.0 dB(A) (FIN)(RUS)(SWE)
PZ50MT 75.0 dB(A) (FIN)(SWE)
PZ50RT 77.0 dB(A) (FIN)(SWE)
PZ50VT 78.0 dB(A) (FIN)(SWE)
Vibration on seat (EN1032, ISO 5008):
PZ50MP Not exceed 0.5 m/s²
(FIN)(RUS)(SWE)
PZ50MT Not exceed 0.5 m/s² (FIN)(SWE)
PZ50RT Not exceed 0.5 m/s² (FIN)(SWE)
PZ50VT Not exceed 0.5 m/s² (FIN)(SWE)
Vibration on handlebar (EN1032, ISO 5008):
PZ50MP Not exceed 2.5 m/s²
(FIN)(RUS)(SWE)
PZ50MT Not exceed 2.5 m/s² (FIN)(SWE)
PZ50RT Not exceed 2.5 m/s² (FIN)(SWE)
PZ50VT Not exceed 2.5 m/s² (FIN)(SWE)
Chassis:
Drive track:
Material:
Molded rubber, fiberglass-rod reinforced
Type:
Internal drive type
Width:
PZ50 356 mm (14.0 in)
PZ50GT 356 mm (14.0 in)
PZ50MP 406 mm (16.0 in)
PZ50MT 356 mm (14.0 in)
PZ50RT 356 mm (14.0 in)
PZ50VT 381 mm (15.0 in)
Deflection:
30.0–35.0 mm (1.18–1.38 in)
Length on ground:
PZ50 769 mm (30.3 in)
PZ50GT 769 mm (30.3 in)
PZ50MP 985 mm (38.8 in)
PZ50MT 1084 mm (42.7 in)
PZ50RT 769 mm (30.3 in)
PZ50VT 985 mm (38.8 in)
Rear suspension:
Type:
Slide rail suspension
Track sprocket wheel:
Material:
Polyethylene
Number of teeth:
PZ50 9
PZ50GT 9
PZ50MP 9
PZ50MT 8
PZ50RT 9
PZ50VT 9
Transmission:
Clutch type:
Automatic centrifugal engagement
Overall reduction ratio:
PZ50 8.66–2.16 :1
PZ50GT 7.79–1.95 :1
PZ50MP 9.50–2.38 :1
PZ50MT 8.20–2.05 :1 (FIN)(SWE)
PZ50MT 9.16–2.29 :1 (CAN)
PZ50RT 8.66–2.16 :1
PZ50VT 9.00–2.25 :1 (CAN)
PZ50VT 9.50–2.38 :1 (FIN)(SWE)
Sheave distance:
267.0–270.0 mm (10.51–10.63 in)
Sheave offset:
14.5–17.5 mm (0.57–0.69 in)
Engagement speed (Subject to change
according to elevation settings.):
PZ50 3700–4100 r/min
PZ50GT 3700–4100 r/min
PZ50MP 2900–3300 r/min
PZ50MT 3900–4300 r/min (FIN)(SWE)
PZ50MT 4100–4500 r/min (CAN)
PZ50RT 3700–4100 r/min
PZ50VT 2900–3300 r/min (FIN)(SWE)
PZ50VT 3300–3700 r/min (CAN)
Shift speed [Subject to change according to
elevation settings. Usually achieved after
approximately 800 m (0.5 mi) traveled.]:
10800–11800 r/min
Drive chain type:
Silent chain enclosed in oil bath
Drive chain housing oil:
Type:
SAE 75W or 80W API GL-3 Gear oil
Capacity:
0.25 L (0.26 US qt, 0.22 Imp.qt)
86
Page 95
Specifications
Reverse system:
PZ50 No
PZ50GT Yes
PZ50MP Yes
PZ50MT Yes
PZ50RT Yes
PZ50VT Yes
Primary reduction ratio:
3.80–0.95 :1
Secondary reduction ratio:
PZ50 41/18 (2.28)
PZ50GT 41/20 (2.05)
PZ50MP 45/18 (2.50)
PZ50MT 41/17 (2.41) (CAN)
PZ50MT 41/19 (2.16) (FIN)(SWE)
PZ50RT 41/18 (2.28)
PZ50VT 45/18 (2.50) (FIN)(SWE)
PZ50VT 45/19 (2.37) (CAN)
Secondary reduction ratio [R]:
PZ50GT 2.73
PZ50MP 3.33
PZ50MT 2.88 (FIN)(SWE)
PZ50MT 3.22 (CAN)
PZ50RT 3.04
PZ50VT 3.16 (CAN)
PZ50VT 3.33 (FIN)(SWE)
Fuel tank capacity:
PZ50 26.7 L (7.05 US gal, 5.87 Imp.gal)
PZ50GT 26.7 L (7.05 US gal, 5.87 Imp.gal)
PZ50MP 32.9 L (8.69 US gal, 7.24 Imp.gal)
(CAN)
PZ50MP 36.0 L (9.51 US gal, 7.92 Imp.gal)
(FIN)(RUS)(SWE)
PZ50MT 26.7 L (7.05 US gal, 5.87 Imp.gal)
PZ50RT 26.7 L (7.05 US gal, 5.87 Imp.gal)
PZ50VT 32.9 L (8.69 US gal, 7.24 Imp.gal)
(CAN)
PZ50VT 36.0 L (9.51 US gal, 7.92 Imp.gal)
(FIN)(SWE)
Engine oil quantity:
With oil filter cartridge replacement:
2.6 L (2.78 US qt, 2.31 Imp.qt)
Without oil filter cartridge replacement:
2.4 L (2.59 US qt, 2.16 Imp.qt)
Total amount:
3.0 L (3.17 US qt, 2.64 Imp.qt)
Brake:
Type:
Hydraulic disc type (ventilated disc)
Operation:
Handle lever, left-hand operated
Throttle:
Operation:
Handle lever, right-hand operated
Electrical system:
Ignition system:
T.C.I.
Spark plug:
Manufacturer:
NGK
Model:
CR9EKB
Gap:
0.6–0.7 mm (0.024–0.028 in)
Battery:
Model:
YTX14-BS
Voltage, capacity:
12 V, 12.0 Ah
Ten-hour rate amperage:
1.2 A
Bulb voltage, wattage × quantity:
Headlight:
12 V, 60/55 W × 2
Headlight bulb type:
Halogen bulb
Tail/brake light:
LED
Meter lighting:
LED
High beam indicator light:
LED
Warning light:
LED
Low coolant temperature indicator light:
LED
Knock control system indicator light:
LED
Drive position indicator light:
PZ50GT LED
PZ50MP LED
PZ50MT LED
PZ50RT LED
PZ50VT LED
Reverse position indicator light:
PZ50GT LED
PZ50MP LED
PZ50MT LED
PZ50RT LED
PZ50VT LED
87
Page 96
Consumer information
ESU12480
Identification number records
Record the frame serial number, engine serial
number (Primary ID), and key identification
number in the spaces provided for assistance
when ordering spare parts from a Yamaha
dealer.
Also, record and keep the ID numbers in a
separate place in case the snowmobile is stolen.
Frame serial number
The frame serial number is the seventeendigit number stamped on the frame of the
snowmobile.
1. Engine serial number
Key identification number
The key identification number is stamped in
the location as shown.
1. Frame serial number
Engine serial number (Primary ID)
The engine serial number is stamped in the
location as shown.
88
1. Key identification number
ESU12491
WARRANTY
If doubt exists as to the cause and cure of a
problem, consult your authorized Yamaha
snowmobile dealer. This is especially important during the warranty period, as unauthorized, haphazard, or improper repairs can
void the warranty. Remember that your autho-
Page 97
rized Yamaha dealer has the special tools,
techniques, and spare parts necessary for
proper repair of your snowmobile.
Always consult your Yamaha dealer if you are
in doubt as to proper specifications and/or
maintenance procedures. Occasionally, printing errors or production changes will result in
incorrect documentation in this manual.
Until you are thoroughly familiar with this
model, consult your Yamaha dealer before attempting any maintenance. Should further
maintenance or service information be desired, service manuals can be purchased
from your local authorized Yamaha snowmobile dealer.
Consumer information
89
Page 98
Index
2-up adjusting blocks, adjusting............... 35
A
Air filter, checking..................................... 59
Auxiliary DC jack (PZ50VT / PZ50MP) .... 21
B
Backrest [PZ50VT /
PZ50MP (FIN)(SWE)(RUS)]................. 25
Battery...................................................... 77
Brake and parking brake .......................... 68
Brake lever...............................................22
Break-in.................................................... 41
C
Center shock absorber and
rear torsion springs, adjusting spring
preload.................................................. 33
Control rods, adjusting
(PZ50VT / PZ50MP) ............................. 36
Coolant temperature warning indicator .... 19
Cooling system......................................... 64
D
Drive and reverse indicator lights
(PZ50RT / PZ50GT / PZ50MT /
PZ50VT / PZ50MP) ..............................17
Drive chain housing.................................. 67
Drive guard............................................... 24
Drive select switch (PZ50RT /
PZ50GT / PZ50MT / PZ50VT /
PZ50MP)............................................... 20
Drive track and slide runners ................... 72
Drive track, high-profile pattern................ 74
Drive track life, maximizing ...................... 45
Driving...................................................... 46
E
Engine idling speed, adjusting ................. 57
Engine oil and oil filter cartridge............... 60
Engine overheating prevention system .... 13
Engine stop switch ................................... 20
F
Fittings and fasteners............................... 77
Fuel ..........................................................27
Fuel level warning indicator...................... 18
Fuel meter and grip/thumb warmer level
indicator ................................................ 17
Fuse, replacing......................................... 78
G
General maintenance and lubrication
chart...................................................... 51
Grip/thumb warmer adjustment switch..... 21
H
Headlight beam switch ............................. 21
Headlight beams, adjusting...................... 76
Headlight bulb, replacing.......................... 75
High beam indicator light.......................... 16
High-altitude settings................................ 60
I
Identification numbers.............................. 88
K
Knock control system indicator light......... 16
L
Location of the important labels .................1
Low coolant temperature indicator light ... 16
Lubrication................................................ 75
M
Main switch ..............................................13
O
Oil level warning indicator ........................19
P
Parking brake lever .................................. 22
Part locations ...........................................10
Passenger grip warmer switch
(PZ50VT) .............................................. 25
Periodic maintenance chart for
the emission control system .................49
Pre-operation check list............................ 38
R
Rear carrier (PZ50VT / PZ50MP)............. 26
Riding your snowmobile ...........................41
S
Safety information ...................................... 8
Self-diagnosis device ............................... 19
Shock absorber, rear, adjusting
compression damping force
(PZ50RT) .............................................. 36
Shock absorbers, front, adjusting air
pressure (PZ50RT) ............................... 30
Shock absorbers, front, adjusting
damping forces (PZ50GT) .................... 32
Shock absorbers, front, adjusting spring
preload (PZ50 / PZ50GT /
PZ50MT / PZ50VT / PZ50MP).............. 29
Page 99
Shroud and covers................................... 23
Shroud and covers, removing and
installing................................................ 53
Shroud latches (PZ50VT / PZ50MP)........ 22
Skis and ski runners.................................70
Spark plugs, checking..............................56
Specifications........................................... 85
Speedometer unit..................................... 14
Starting the engine................................... 40
Steering system ....................................... 71
Stopping the engine ................................. 47
Storage..................................................... 83
Storage pouch..........................................25
Strap (PZ50MT) ....................................... 45
Suspension .............................................. 29
T
Throttle cable free play, adjusting
(PZ50 / PZ50RT / PZ50GT /
PZ50MT)............................................... 58
Throttle cable free play, checking
(PZ50VT / PZ50MP) ............................. 58
Throttle lever ............................................ 13
Throttle override system (T.O.R.S.) ......... 13
Throttle override system (T.O.R.S.),
checking................................................ 58
Tool kit...................................................... 53
Tow hitch [PZ50VT (CAN) /
PZ50MP (CAN)(RUS)] and
tow hitch bracket [PZ50VT
(FIN)(SWE) / PZ50MP (FIN)(SWE)] ..... 27
Transporting............................................. 47
Troubleshooting ....................................... 80
V
Valve clearance........................................ 60
V-belt........................................................ 65
V-belt holder (PZ50VT / PZ50MP) ........... 24
Index
Page 100
YAMAHA MOTOR CO., LTD.
Printed in Japan
2008.05-0.8×2 CR
Printed on recycled paper
Loading...