Congratulations on your purchase of the Yamaha YW50X. This model is the result of Yamaha’s vast experience in the
EAU10090
production of fine sporting, touring, and pacesetting racing machines. 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 scooter. If you have
any questions concerning the operation or maintenance of your scooter, please consult a Yamaha dealer.
The design and manufacture of this Yamaha scooter fully comply with the emissions standards for clean air applicable at the
date of manufacture. Yamaha has met these standards without reducing the performance or economy of operation of the
scooter. To maintain these high standards, it is important that you and your Yamaha dealer pay close attention to the
recommended maintenance schedules and operating instructions contained within this manual.
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IMPORTANT MANUAL INFORMATION
EAU10122
Particularly important information is distinguished in this manual by the following notations:
Q
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!
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NOTE:
NOTE:
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● This manual should be considered a permanent part of this scooter and should remain with it even if the scooter is
6
subsequently sold.
● Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most
Failure to follow WARNING instructions could result in severe injury or death to the scooter
operator, a bystander, or a person inspecting or repairing the scooter.
A CAUTION indicates special precautions that must be taken to avoid damage to the scooter.
A NOTE provides key information to make procedures easier or clearer.
current product information available at the time of printing, there may be minor discrepancies between your scooter
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and this manual. If you have any questions concerning this manual, please consult your Yamaha dealer.
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PLEASE READ THIS MANUAL AND THE “YOU AND YOUR MOTORCYCLE: RIDING TIPS” BOOKLET CAREFULLY
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AND COMPLETELY BEFORE OPERATING THIS SCOOTER. DO NOT ATTEMPT TO OPERATE THIS SCOOTER UNTIL
YOU HAVE ATTAINED ADEQUATE KNOWLEDGE OF ITS CONTROLS AND OPERATING FEATURES AND UNTIL
YOU HAVE BEEN TRAINED IN SAFE AND PROPER RIDING TECHNIQUES. REGULAR INSPECTIONS AND CAREFUL MAINTENANCE, ALONG WITH GOOD RIDING SKILLS, WILL ENSURE THAT YOU SAFELY ENJOY THE CAPABILITIES AND THE RELIABILITY OF THIS SCOOTER.
EAU35821
EWA12580
*Product and specifications are subject to change without notice.
SCOOTERS ARE SINGLE TRACK
VEHICLES. THEIR SAFE USE AND
OPERATION ARE DEPENDENT
1
UPON THE USE OF PROPER RIDING
TECHNIQUES AS WELL AS THE EXPERTISE OF THE OPERATOR. EV-
2
ERY OPERATOR SHOULD KNOW
THE FOLLOWING REQUIREMENTS
3
BEFORE RIDING THIS SCOOTER.
HE OR SHE SHOULD:
4
● OBTAIN THOROUGH INSTRUC-
TIONS FROM A COMPETENT
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SOURCE ON ALL ASPECTS OF
SCOOTER OPERATION.
● OBSERVE THE WARNINGS AND
MAINTENANCE REQUIRE-
MENTS IN THE OWNER’S
MANUAL.
● OBTAIN QUALIFIED TRAINING IN
SAFE AND PROPER RIDING
TECHNIQUES.
● OBTAIN PROFESSIONAL TECH-
NICAL SERVICE AS INDICATED
BY THE OWNER’S MANUAL
AND/OR WHEN MADE NECES-
SARY BY MECHANICAL CONDI-
TIONS.
EAU10261
Safe riding
● Always make pre-operation
checks. Careful checks may help
prevent an accident.
● This scooter is designed to carry
the operator and passenger.
● The failure of motorists to detect
and recognize scooters in traffic is
the predominating cause of automobile/scooter accidents. Many
accidents have been caused by an
automobile driver who did not see
the scooter. Making yourself conspicuous appears to be very effective in reducing the chance of this
type of accident.
Therefore:
• Wear a brightly colored jacket.
• Use extra caution when
approaching and passing
through intersections, since
intersections are the most likely
places for scooter accidents to
occur.
• Ride where other motorists can
see you. Avoid riding in another
motorist’s blind spot.
● Many accidents involve inexperi-
1-1
enced operators. In fact, many operators who have been involved in
accidents do not even have a current driver’s license.
• Make sure that you are qualified and that you only lend your
scooter to other qualified
operators.
• Know your skills and limits.
Staying within your limits may
help you to avoid an accident.
• We recommend that you
practice riding your scooter
where there is no traffic until
you have become thoroughly
familiar with the scooter and all
of its controls.
● Many accidents have been caused
by error of the scooter operator. A
typical error made by the operator
is veering wide on a turn due to
EXCESSIVE SPEED or
undercornering (insufficient lean
angle for the speed).
• Always obey the speed limit
and never travel faster than
warranted by road and traffic
conditions.
• Always signal before turning or
QQ
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SAFETY INFORMATION
changing lanes. Make sure that
other motorists can see you.
● The posture of the operator and
passenger is important for proper
control.
• The operator should keep both
hands on the handlebar and
both feet on the footboard
during operation to maintain
control of the scooter.
• The passenger should always
hold onto the operator, the seat
strap or grab bar, if equipped,
with both hands and keep both
feet on the passenger footrests.
• Never carry a passenger
unless he or she can firmly
place both feet on the passenger footrests.
● Never ride under the influence of
alcohol or other drugs.
● This scooter is designed for on-
road use only. It is not suitable for
off-road use.
Protective apparel
The majority of fatalities from scooter
accidents are the result of head inju-
ries. The use of a safety helmet is the
single most critical factor in the prevention or reduction of head injuries.
● Always wear an approved helmet.
● Wear a face shield or goggles. Wind
in your unprotected eyes could
contribute to an impairment of vision which could delay seeing a
hazard.
● The use of a jacket, substantial
shoes, trousers, gloves, etc., is effective in preventing or reducing
abrasions or lacerations.
● Never wear loose-fitting clothes,
otherwise they could catch on the
control levers or wheels and cause
injury or an accident.
● Never touch the engine or exhaust
system during or after operation.
They become very hot and can
cause burns. Always wear protective clothing that covers your legs,
ankles, and feet.
● Passengers should also observe
the above precautions.
Modifications
Modifications made to this scooter not
approved by Yamaha, or the removal of
1-2
original equipment, may render the
scooter unsafe for use and may cause
severe personal injury. Modifications
may also make your scooter illegal to
use.
Loading and accessories
Adding accessories or cargo to your
scooter can adversely affect stability
and handling if the weight distribution
of the scooter is changed. To avoid the
possibility of an accident, use extreme
caution when adding cargo or accessories to your scooter. Use extra care
when riding a scooter that has added
cargo or accessories. Here are some
general guidelines to follow if loading
cargo or adding accessories to your
scooter:
Loading
The total weight of the operator, passenger, accessories and cargo must not
exceed the maximum load limit.
Maximum load:
143 kg (315 lb)
When loading within this weight limit,
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SAFETY INFORMATION
keep the following in mind:
● Cargo and accessory weight
should be kept as low and close to
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the scooter as possible. Make sure
to distribute the weight as evenly
as possible on both sides of the
scooter to minimize imbalance or
instability.
● Shifting weights can create a sud-
den imbalance. Make sure that accessories and cargo are securely
attached to the scooter before
riding. Check accessory mounts
and cargo restraints frequently.
● Never attach any large or heavy
items to the handlebar, front fork,
or front fender. Such items can create unstable handling or a slow
steering response.
Accessories
Genuine Yamaha accessories have
been specifically designed for use on
this scooter. Since Yamaha cannot test
all other accessories that may be available, you must personally be responsible for the proper selection, installation and use of non-Yamaha accessories. Use extreme caution when select-
ing and installing any accessories.
Keep the following guidelines in mind,
as well as those provided under “Loading” when mounting accessories.
● Never install accessories or carry
cargo that would impair the performance of your scooter. Carefully
inspect the accessory before using it to make sure that it does not
in any way reduce ground clearance or cornering clearance, limit
suspension travel, steering travel
or control operation, or obscure
lights or reflectors.
• Accessories fitted to the
handlebar or the front fork area
can create instability due to
improper weight distribution or
aerodynamic changes. If
accessories are added to the
handlebar or front fork area,
they must be as lightweight as
possible and should be kept to
a minimum.
• Bulky or large accessories may
seriously affect the stability of
the scooter due to aerodynamic effects. Wind may
attempt to lift the scooter, or
1-3
the scooter may become
unstable in cross winds. These
accessories may also cause
instability when passing or
being passed by large vehicles.
• Certain accessories can
displace the operator from his
or her normal riding position.
This improper position limits
the freedom of movement of
the operator and may limit
control ability, therefore, such
accessories are not recommended.
● Use caution when adding electri-
cal accessories. If electrical accessories exceed the capacity of the
scooter’s electrical system an electric failure could result, which could
cause a dangerous loss of lights
or engine power.
Gasoline and exhaust gas
● GASOLINE IS HIGHLY FLAM-
MABLE:
• Always turn the engine off
when refueling.
• Take care not to spill any
gasoline on the engine or
Safe-riding points<IXE>
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SAFETY INFORMATION
exhaust system when refueling.
• Never refuel while smoking or
in the vicinity of an open flame.
● Never start the engine or let it run
for any length of time in a closed
area. The exhaust fumes are poisonous and may cause loss of consciousness and death within a
short time. Always operate your
scooter in an area that has adequate ventilation.
● Always turn the engine off before
leaving the scooter unattended and
remove the key from the main
switch. When parking the scooter,
note the following:
• The engine and exhaust
system may be hot, therefore,
park the scooter in a place
where pedestrians or children
are not likely to touch these hot
areas.
• Do not park the scooter on a
slope or soft ground, otherwise
it may fall over.
• Do not park the scooter near a
flammable source (e.g., a
kerosene heater, or near an
open flame), otherwise it could
catch fire.
● If you should swallow any gasoline,
inhale a lot of gasoline vapor, or
allow gasoline to get into your eyes,
see your doctor immediately. If any
gasoline spills on your skin or clothing, immediately wash the affected
area with soap and water and
change your clothes.
1-4
Further safe-riding points
● Make sure to signal clearly when
making turns.
ZAUM00**
Turn left
ZAUM00**
Turn right
EAU10350
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SAFETY INFORMATION
● Braking can be extremely difficult
on a wet road. Avoid hard braking,
because the scooter could slide.
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Apply the brakes slowly when stopping on a wet surface.
● Slow down as you approach a cor-
ner or turn. Once you have completed a turn, accelerate slowly.
● Be careful when passing parked
cars. A driver might not see you and
open a door in your path.
● Railroad crossings, streetcar rails,
iron plates on road construction
sites, and manhole covers become
extremely slippery when wet. Slow
down and cross them with caution.
Keep the scooter upright, otherwise
it could slide out from under you.
● The brake lining could get wet
when you wash the scooter. After
washing the scooter, check the
brakes before riding.
● Always wear a helmet, gloves, trou-
sers (tapered around the cuff and
ankle so they do not flap), and a
bright colored jacket.
● Do not carry too much luggage on
the scooter. An overloaded scooter
is unstable. Use a strong cord to
secure any luggage to the carriers.
A loose load will affect the stability
of the scooter and could divert your
attention from the road. (See page
1-2.)
1-5
Labels, location of<IXE>
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Location of important labels
Please read the following important labels carefully before operating this vehicle.
SAFETY INFORMATION
EAU10381
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2
4
56
1-6
2
1
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3
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7
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9
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SAFETY INFORMATION
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SAFETY INFORMATION
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Part locations<IXE>
DESCRIPTION
DESCRIPTION
Left view
EAU10400
EAU10410
1
2
3
4
5
6
7
1. Front wheel
8
2. Front brake caliper (page 6-15)
3. Front turn signal light
4. Helmet holder (page 3-8)
9
5. Storage compartment (page 3-9)
6. Rear turn signal light
7. Rear wheel
8. Adjusting nut (page 6-15)
9. Kickstarter (page 3-7)
10.Air filter element (page 6-10)
11.Battery (page 6-21)
1
2
3
11
4
5
10
9
8
7
6
2-1
Right view
DESCRIPTION
EAU10420
12.Tail/brake light
13.Carrier (page 3-10)
14.Fuel tank cap
15.2-stroke engine oil tank cap
16.Seat (page 3-8)
17.Headlight
18.Spark plug (page 6-7)
19.Centerstand
20.Muffler
12
13
20
14, 15
16
19
18
17
1
2
3
4
5
6
7
8
9
2-2
DESCRIPTION
Controls and instruments
EAU10430
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3
4
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9
21.Rear brake lever (page 3-4)
22.Left handlebar switches (page 3-3)
23.Speedometer unit (page 3-2)
24.Fuel gauge (page 3-3)
25.Right handlebar switches (page 3-3)
26.Front brake lever (page 3-4)
27.Throttle grip (page 6-12)
28.Main switch/steering lock (page 3-1)
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22
23
24
25
26
27
28
2-3
Main switch/steering lock<IXE>
EAU1044D
INSTRUMENT AND CONTROL FUNCTIONS
INSTRUMENT AND CONTROL FUNCTIONS
EAU10460
Main switch/steering lock
OFF
LOCK
ZAUM00**
The main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.
ON
All electrical circuits are supplied with
power, the taillight and the license plate
light come on, and the engine can be
started. The key cannot be removed.
NOTE:
The headlight and meter lighting come
on automatically when the engine is
started.
ON
EAUT1020
OFF
EAU10660
All electrical systems are off. The key
can be removed.
EAU10670
*
The 2-stroke engine oil level warning
light should come on. (See page 3-2.)
EAU10680
LOCK
The steering is locked, and all electrical systems are off. The key can be removed.
To lock the steering
1
ZAUM00**
1. Push
1. Turn the handlebars all the way to
the left.
2. Push the key in from the “OFF” po-
3-1
sition, and then turn it to “LOCK”
while still pushing it.
3. Remove the key.
To unlock the steering
1
ZAUM00**
1. Turn
2. Release
2
Push the key in, and then turn it to “OFF”
while still pushing it.
EWA10060
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Never turn the key to “OFF” or
“LOCK” while the vehicle is moving,
otherwise the electrical systems will
be switched off, which may result in
loss of control or an accident. Make
sure that the vehicle is stopped before turning the key to “OFF” or
“LOCK”.
1
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3
4
5
6
7
8
9
Speedometer unit<IXE>
INSTRUMENT AND CONTROL FUNCTIONS
Indicator and warning lights
1
3
1
2
20
10
10
0
3
4
ZAUM00**
1. Turn signal indicator light "5"
5
2. High beam indicator light "&"
0
0000001
3. 2-stroke engine oil level warning light
"7"
6
Turn signal indicator light “
This indicator light flashes when the turn
7
signal switch is pushed to the left or
right.
8
High beam indicator light “
This indicator light comes on when the
9
high beam of the headlight is switched
on.
2
20
30
40
30
50
km/h
60
40
MPH
55
5”
55
&&
&”
&&
EAU11003
EAU11020
EAU11080
2-stroke engine oil level warning light
EAU32441
77
“
7”
77
The warning light comes on when the
key is in the “*” position or when the
engine oil level in the 2-stroke engine
oil tank is low during operation. If the
warning light comes on during operation, stop immediately and fill the oil tank
with YAMALUBE 2 or an equivalent 2stroke engine oil. The warning light
should go off after the 2-stroke engine
oil tank has been refilled.
NOTE:
If the 2-stroke engine oil level warning
light does not come on when the key is
in the “*” position or does not go off after the 2-stroke engine oil tank has been
refilled, have a Yamaha dealer check the
electrical circuit.
ECA12720
cC
Do not operate the vehicle until you
know that the 2-stroke engine oil
level is sufficient.
EAUT1820
Speedometer unit
1
ZAUM00**
1. Speedmeter
2. Odmeter
The speedometer unit is equipped with
a speedometer and an odometer. The
speedometer shows the riding speed.
The odometer shows the total distance
traveled.
2
20
30
40
20
10
30
50
10
km/h
60
40
0
0
MPH
0000001
3-2
Engine stop switch<IXE>
INSTRUMENT AND CONTROL FUNCTIONS
EAU12140
Fuel gauge
1
20
30
40
20
10
30
50
10
km/h
60
40
0
0
MPH
0000001
ZAUM00**
1. Fuel gauge
The fuel gauge indicates the amount of
fuel in the fuel tank. The needle moves
towards “E” (Empty) as the fuel level
decreases. When the needle reaches
“E”, refuel as soon as possible.
NOTE:
Do not allow the fuel tank to empty itself completely.
Handlebar switches
1
ZAUM00**
1. Dimmer switch "%/&"
2. Turn signal switch "4/6"
3. Horn switch "*"
ZAUM00**
2
1
ENGINE STOP
START
2
3
EAU12347
Dimmer switch “
%%
%/
%%
&&
&”
&&
EAU12400
Set this switch to “&” for the high beam
and to “%” for the low beam.
Turn signal switch “
44
4/
44
66
6”
66
EAU12460
To signal a right-hand turn, push this
switch to “6”. To signal a left-hand turn,
push this switch to “4”. When released, the switch returns to the center
position. To cancel the turn signal lights,
push the switch in after it has returned
to the center position.
Horn switch “
**
*”
**
EAU12500
Press this switch to sound the horn.
Engine stop switch “
##
#/
##
$$
$”
$$
EAU12660
Set this switch to “#” before starting the
engine. Set this switch to “$” to stop
the engine in case of an emergency,
such as when the motorcycle overturns
or when the throttle cable is stuck.
1
2
3
4
5
6
7
8
9
1. Engine stop switch "#/$"
2. Start switch ","
3-3
Brake lever, rear<IXE>
INSTRUMENT AND CONTROL FUNCTIONS
Start switch “
,,
,”
,,
Push this switch to crank the engine with
the starter.
1
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See page 5-1 for starting instructions
2
prior to starting the engine.
3
4
5
6
7
8
9
EAU12710
ECA10050
EAU12900
Front brake lever
ZAUM00**
The front brake lever is located on the
right handlebar grip. To apply the front
brake, pull this lever toward the handlebar grip.
EAU12950
Rear brake lever
ZAUM00**
The rear brake lever is located on the
left handlebar grip. To apply the rear
brake, pull this lever toward the handlebar grip.
3-4
Fuel and 2-stroke engine oil tank caps<IXE>
INSTRUMENT AND CONTROL FUNCTIONS
EAUT1030
Fuel and 2-stroke engine oil
tank caps
The fuel tank cap and the 2-stroke engine oil tank cap are located under the
seat. (See page 3-8.)
Fuel tank cap
To remove the fuel tank cap
2
1
ZAUM00**
1. Fuel tank cap
2. Fuel tank cap lock lever
Lift the fuel tank cap lock lever and then
turn it from the “LOCK” position to the
“OPEN” position. The fuel tank cap can
then be removed.
To install the fuel tank cap
Insert the fuel tank cap into the tank
opening with the mark on the cap and
fuel filler aligned. Turn the lever to the
“LOCK” position, and then push it down.
EWA10120
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Make sure that the fuel tank cap is
properly closed and locked before
riding.
2-stroke engine oil tank cap
1
ZAUM00**
1. 2-stroke engine oil tank cap
Remove the 2-stroke engine oil tank cap
by turning it counterclockwise.
Install the 2-stroke engine oil tank cap
by turning it clockwise.
EWA10140
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Make sure that the fuel and 2-stroke
engine oil tank caps are properly installed before riding the scooter.
1
2
3
4
5
6
7
8
9
3-5
Fuel<IXE>
INSTRUMENT AND CONTROL FUNCTIONS
Fuel
1
1
2
3
4
ZAUM00**
1. Fuel tank filler tube
5
2. Fuel level
Make sure that there is sufficient fuel in
6
the tank. Fill the fuel tank to the bottom
of the filler tube as shown.
7
2
w
8
●●
● Do not overfill the fuel tank, oth-
●●
erwise it may overflow when the
9
fuel warms up and expands.
●●
● Avoid spilling fuel on the hot
●●
engine.
EAU13211
EWA10880
ECA10070
cC
Immediately wipe off spilled fuel with
a clean, dry, soft cloth, since fuel may
deteriorate painted surfaces or plastic parts.
EAU40680
Recommended fuel:
UNLEADED GASOLINE ONLY
Fuel tank capacity:
5.7 L (1.5 US gal) (1.25 Imp.gal)
Your Yamaha engine has been designed
to use regular unleaded gasoline with a
pump octane number [(R+M)/2] of 86
or higher, or a research octane number
of 91 or higher. If knocking (or pinging)
occurs, use a gasoline of a different
brand or premium unleaded fuel. Use
of unleaded fuel will extend spark plug
life and reduce maintenance costs.
Gasohol
There are two types of gasohol: gasohol containing ethanol and that containing methanol. Gasohol containing ethanol can be used if the ethanol content
does not exceed 10%. Gasohol containing methanol is not recommended by
Yamaha because it can cause damage
to the fuel system or vehicle performance problems.
3-6
Kickstarter<IXE>
INSTRUMENT AND CONTROL FUNCTIONS
EAU13431
Catalytic converter
This model is equipped with a catalytic
converter in the exhaust system.
EWA10860
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The exhaust system is hot after operation. Make sure that the exhaust
system has cooled down before doing any maintenance work.
ECA10700
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The following precautions must be
observed to prevent a fire hazard or
other damages.
●●
● Use only unleaded gasoline. The
●●
use of leaded gasoline will cause
unrepairable damage to the
catalytic converter.
●●
● Never park the vehicle near pos-
●●
sible fire hazards such as grass
or other materials that easily
burn.
●●
● Do not allow the engine to idle
●●
too long.
EAU13452
2-stroke engine oil
Make sure that there is sufficient 2stroke engine oil in the oil tank. Add the
recommended 2-stroke engine oil as
necessary.
1
ZAUM00**
1. 2-stroke engine oil tank cap
Recommended oil:
See page 8-1.
Oil quantity:
1.4 L (1.23 US qt) (1.48 Imp.qt)
NOTE:
Make sure that the 2-stroke engine oil
tank cap is properly installed.
EAU13680
Kickstarter
1
ZAUM00**
1. Kickstarter lever
To start the engine, fold out the
kickstarter lever, move it down lightly
with your foot until the gears engage,
and then push it down smoothly but
forcefully.
1
2
3
4
5
6
7
8
9
3-7
Helmet holder<IXE>
INSTRUMENT AND CONTROL FUNCTIONS
Seat
To open the seat
1. Place the scooter on the
1
2
3
4
5
6
7
8
9
centerstand.
2. Insert the key into the main switch,
and then turn it counterclockwise
to “OPEN”.
OPEN
ZAUM00**
NOTE:
Do not push inward when turning the
key.
EAU13932
3. Fold the seat up.
1
ZAUM00**
1. Seat
To close the seat
1. Fold the seat down, and then push
it down to lock it in place.
2. Remove the key from the main
switch if the scooter will be left unattended.
NOTE:
Make sure that the seat is properly secured before riding.
EAU14300
Helmet holder
1
ZAUM00**
1. Helmet holder
The helmet holder is located under the
seat.
To secure a helmet to the helmet
holder
1. Open the seat. (See page 3-8.)
2. Attach the helmet to the helmet
holder, and then securely close the
seat.
EWA10160
w
Never ride with a helmet attached to
the helmet holder, since the helmet
may hit objects, causing loss of control and possibly an accident.
3-8
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