Read this manual carefully before operating this vehicle.
OWNER’S MANUAL
YN50F
YN50FM
2AC-F8199-E6
EAU46091
Read this manual carefully before operating this vehicle. This manual should stay with this vehicle if it is sold.
INTRODUCTION
WARNING
EAU10114
Welcome to the Yamaha world of motorcycling!
As the owner of the YN50F/YN50FM, you are benefiting from Yamaha’s vast experience and newest technology regarding
the design and manufacture of high-quality products, which have earned Yamaha a reputation for dependability.
Please take the time to read this manual thoroughly, so as to enjoy all advantages of your YN50F/YN50FM. The Owner’s
Manual does not only instruct you in how to operate, inspect and maintain your scooter, but also in how to safeguard yourself and others from trouble and injury.
In addition, the many tips given in this manual will help keep your scooter in the best possible condition. If you have any
further questions, do not hesitate to contact your Yamaha dealer.
The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first!
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 scooter and this
manual. If there is any question concerning this manual, please consult a Yamaha dealer.
Please read this manual carefully and completely before operating this scooter.
EWA12412
IMPORTANT MANUAL INFORMATION
WARNING
NOTICE
TIP
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.
A WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid damage to the
vehicle or other property.
A TIP provides key information to make procedures easier or clearer.
*Product and specifications are subject to change without notice.
As the vehicle’s owner, you are responsible for the safe and proper operation of your scooter.
Scooters are single-track vehicles.
Their safe use and operation are dependent upon the use of proper riding
techniques as well as the expertise of
the operator. Every operator should
know the following requirements before riding this scooter.
He or she should:
Obtain thorough instructions from
a competent source on all aspects
of scooter operation.
Observe the warnings and mainte-
nance requirements in this Owner’s Manual.
Obtain qualified training in safe
and proper riding techniques.
Obtain professional technical ser-
vice as indicated in this Owner’s
Manual and/or when made necessary by mechanical conditions.
EAUT1019
Never operate a scooter without
proper training or instruction. Take
a training course. Beginners
should receive training from a certified instructor. Contact an authorized scooter dealer to find out
about the training courses nearest
you.
Safe Riding
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 4-1 for a list of pre-operation
checks.
This scooter is designed to carry
the operator and a passenger.
Although this scooter is designed to
carry a passenger, always comply with
the local regulations.
The failure of motorists to detect
and recognize scooters in traffic is
the predominating cause of automobile/scooter accidents. Many
1-1
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 you are
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.
• Never maintain a scooter without proper knowledge. Contact
an authorized scooter dealer to
inform you on basic scooter
maintenance. Certain maintenance can only be carried out
by certified staff.
SAFETY INFORMATION
Many accidents involve inexperi-
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
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 operator footrests 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.
1-2
Protective Apparel
The majority of fatalities from scooter
accidents are the result of head injuries. 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 that 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.
Always wear protective clothing
that covers your legs, ankles, and
feet. The engine or exhaust system become very hot during or after operation and can cause
burns.
A passenger should also observe
the above precautions.
1
SAFETY INFORMATION
Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing
1
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 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 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 engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or carports.
Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loading
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, along with
the information about accessories below, are some general guidelines to follow if loading cargo to your scooter:
The total weight of the operator, passenger, accessories and cargo must
not exceed the maximum load limit.
Operation of an overloaded vehicle
could cause an accident.
Maximum load:
163 kg (359 lb)
When loading within this weight limit,
keep the following in mind:
1-3
Cargo and accessory weight
should be kept as low and close to
the scooter as possible. Securely
pack your heaviest items as close
to the center of the vehicle as possible and 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.
• Properly adjust the suspension
for your load (suspension-adjustable models only), and
check the condition and pressure of your tires.
• 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.
This vehicle is not designed to
pull a trailer or to be attached to
a sidecar.
SAFETY INFORMATION
Genuine Yamaha Accessories
Choosing accessories for your vehicle
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 vehicle.
Many companies with no connection
to Yamaha manufacture parts and accessories 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.
Aftermarket Parts, Accessories, and
Modifications
While you may find aftermarket products similar in design and quality to
genuine Yamaha accessories, recognize that some aftermarket accessories or modifications are not suitable
because of potential safety hazards to
you or others. Installing aftermarket
products or having other modifications
performed to your vehicle that change
any of the vehicle’s design or operation
characteristics can put you and others
at greater risk of serious injury or
death. You are responsible for injuries
related to changes in the vehicle.
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.
1-4
• Bulky or large accessories may
seriously affect the stability of
the scooter due to aerodynamic
effects. Wind may attempt to lift
the scooter, or 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.
1
SAFETY INFORMATION
Aftermarket Tires and Rims
The tires and rims that came with your
scooter were designed to match the
1
performance capabilities and to provide the best combination of handling,
braking, and comfort. Other tires, rims,
sizes, and combinations may not be
appropriate. Refer to page 6-14 for tire
specifications and more information on
replacing your tires.
Transporting the Scooter
Be sure to observe following instructions before transporting the scooter in
another vehicle.
Remove all loose items from the
scooter.
Point the front wheel straight
ahead on the trailer or in the truck
bed, and choke it in a rail to prevent movement.
Secure the scooter with tie-downs
or suitable straps that are attached to solid parts of the scooter, such as the frame or upper
front fork triple clamp (and not, for
example, to rubber-mounted handlebars or turn signals, or parts
that could break). Choose the lo-
cation for the straps carefully so
the straps will not rub against
painted surfaces during transport.
The suspension should be com-
pressed somewhat by the tiedowns, if possible, so that the
scooter will not bounce excessively during transport.
1-5
EAU57600
Further safe-riding points
Be sure to signal clearly when
making turns.
Braking can be extremely difficult
on a wet road. Avoid hard braking,
because the scooter could slide.
Apply the brakes slowly when
stopping on a wet surface.
Slow down as you approach a
corner 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 pads or linings could
get wet when you wash the scooter. After washing the scooter,
check the brakes before riding.
Always wear a helmet, gloves,
trousers (tapered around the cuff
and ankle so they do not flap), and
a brightly 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 carrier (if equipped). A loose load will
affect the stability of the scooter
and could divert your attention
from the road. (See page 1-3.)
SAFETY INFORMATION
1
1-6
DESCRIPTION
Left view
2
1. Storage compartment (page 3-12)
2. Final transmission oil filler cap (page 6-11)
3. Brake lever free play adjusting nut
4. Final transmission oil drain bolt (page 6-11)
5. Kickstarter (page 3-11)
6. Air filter element (page 6-13)
7. Engine oil drain bolt (page 6-8)
8. Front brake pads (page 6-18)
EAU10411
2-1
Right view
DESCRIPTION
EAU10421
2
1. Grab bar (page 5-2)
2. Fuel tank cap (page 3-8)
3. Seat (page 3-11)
4. Battery (page 6-23)
5. Fuses (page 6-25)
6. Coolant reservoir cap (page 6-12)
7. Luggage hook (page 3-13)
8. Main switch/steering lock (page 3-1)
9. Coolant reservoir (page 6-12)
10.Engine oil dipstick (page 6-8)
11.Centerstand (page 6-21)
2-2
DESCRIPTION
Controls and instruments
2
1. Rear brake lever (page 3-7)
2. Left handlebar switches (page 3-6)
3. Multi-function display (page 3-3)
4. Right handlebar switch (page 3-6)
5. Throttle grip (page 6-14)
6. Front brake lever (page 3-7)
EAU10431
2-3
INSTRUMENT AND CONTROL FUNCTIONS
TIP
WARNING
EAU10462
Main switch/steering lock
The main switch/steering lock controls
the ignition and lighting systems, and is
used to lock the steering. The various
positions are described below.
EAUS1382
ON “”
All electrical circuits are supplied with
power, the meter lighting comes on,
and the engine can be started. The key
cannot be removed.
The headlight and taillight come on automatically when the engine is started.
(off)
EAU47792
All electrical systems are off. The key
can be removed.
EWA15351
Never turn the key to “” or “ ”
while the vehicle is moving. Otherwise the electrical systems will be
switched off, which may result in
loss of control or an accident.
EAUM3120
LOCK “ ”
The steering is locked, and all electrical
systems are off. The key can be removed.
To lock the steering
3
1. Push.
2. Turn.
1. Turn the handlebars all the way to
the left.
2. Push the key in from the “” position, and then turn it to “ ” while
still pushing it.
3. Remove the key.
3-1
INSTRUMENT AND CONTROL FUNCTIONS
To unlock the steering
3
1. Push.
2. Turn.
Push the key in, and then turn it to “”
while still pushing it.
EAU49394
Indicator lights and warning
lights
1. Coolant temperature warning light “”
2. High beam indicator light “”
3. Turn signal indicator light “”
4. Fuel level warning light “ ”
5. Engine trouble warning light “”
EAU11021
Turn signal indicator light “”
This indicator light flashes when the
turn signal switch is pushed to the left
or right.
EAU11081
High beam indicator light “”
This indicator light comes on when the
high beam of the headlight is switched
on.
Fuel level warning light “”
EAUM2792
This warning light comes on when the
fuel level drops below approximately
0.9 L (0.24 US gal, 0.20 Imp.gal). When
this occurs, refuel as soon as possible.
The electrical circuit of the warning
light can be checked by turning the key
to “”. The warning light should come
on for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
EAUM2782
Coolant temperature warning
light “”
This warning light comes on if the engine overheats. If this occurs, stop the
engine immediately and allow the engine to cool.
The electrical circuit of the warning
light can be checked by turning the key
to “”. The warning light should come
on for a few seconds, and then go off.
3-2
INSTRUMENT AND CONTROL FUNCTIONS
NOTICE
TIP
TIP
If the warning light does not come on
initially when the key is turned to “”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
ECA10022
Do not continue to operate the engine if it is overheating.
For radiator-fan-equipped vehi-
cles, the radiator fan(s) automatically switch on or off according to
the coolant temperature in the radiator.
If the engine overheats, see page
6-31 for further instructions.
EAU54432
Engine trouble warning light “”
This warning light flashes or stays on if
an electrical circuit monitoring the engine is not working correctly. If this occurs, have a Yamaha dealer check the
self-diagnosis system.
The electrical circuit of the warning
light can be checked by turning the key
to “”. The warning light should come
on for a few seconds, and then go off.
If the warning light does not come on
initially when the key is turned to “”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
EAUM3130
Multi-function display
3
1. Clock
2. Speedometer
3. Fuel gauge
4. Oil change indicator “OIL CHANGE”
5. Odometer/tripmeter/fuel reserve tripmeter
6. “RESET/SELECT” button
The multi-function display performs
the following self-test for three seconds in order to check the electrical
circuit.
The speedometer digits display
from 0 to 80, and then from 80 to
0 in kilometers. If the speedometer
is set to miles, the digits will display from 0 to 50, and then from
50 to 0.
3-3
INSTRUMENT AND CONTROL FUNCTIONS
WARNING
TIP
TIP
3
All LCD segments and warning
lights come on and then go off.
Be sure to stop the vehicle before
making any setting changes to the
multi-function display. Changing
settings while riding can distract the
operator and increase the risk of an
accident.
The multi-function display is equipped
with the following:
a digital clock
a digital speedometer (which
shows riding speed)
an odometer (which shows the to-
tal distance traveled)
a tripmeter (which shows the dis-
tance traveled since it was last set
to zero)
a fuel reserve tripmeter (which
shows the distance traveled on
the fuel reserve)
an oil change indicator (which
shows when the engine oil should
be changed)
a fuel gauge
a self-diagnosis device
EWA12313
Be sure to turn the key to “” be-
fore using the “RESET/SELECT”
button.
For the U.K. only: To switch the
speedometer and odometer/tripmeter displays between kilometers and miles, when the main
switch is turned to “”, press the
“RESET/SELECT” button for at
least eight seconds.
To set the clock:
1. Select the odometer and push the
“RESET/SELECT” button for at
least three seconds.
2. When the hour digits start flashing, push the “RESET/SELECT”
button to set the hours.
3-4
3. To change the minutes digits,
push the “RESET/SELECT” button for at least three seconds.
4. When the minutes digits start
flashing, push the “RESET/SELECT” button to set the minutes.
5. Push the “RESET/SELECT” button for at least three seconds to
start the clock.
After setting the clock, be sure to push
the “RESET/SELECT” button for at
least three seconds before turning the
key to “”, otherwise the clock will not
be set.
INSTRUMENT AND CONTROL FUNCTIONS
TIP
RESET/
SELECT
RESET/
SELECT
RESET/
SELECT
RESET/
SELECT
RESET/
SELECT
Odometer and tripmeter modes
Pushing the “RESET/SELECT“ button
switches the display between the
odometer mode “ODO” and the tripmeter “TRIP” in the following order:
ODO → TRIP → ODO
If the fuel level warning indicator
comes on (see page 3-2), the odometer display will automatically change to
the fuel reserve tripmeter mode “TRIP
F” and start counting the distance traveled from that point. In that case, pushing the “RESET/SELECT“ button
switches the display between the various tripmeter and odometer modes in
the following order:
TRIP F → ODO → TRIP → TRIP F
To reset a tripmeter, select it by pushing the “RESET/SELECT” button, and
then push it again for at least three seconds. If you do not reset the fuel reserve tripmeter manually, it will reset
itself automatically and the display will
return to the prior mode after refueling
and traveling 5 km (3 mi).
The display cannot be changed back
to “TRIP F” after pushing the “RESET/SELECT” button.
3-5
Oil change indicator “OIL CHANGE”
This indicator comes on at the initial
1000 km (600 mi), then at 3000 km
(1800 mi) and every 3000 km (1800 mi)
thereafter to indicate that the engine oil
should be changed. (See page 6-8)
3
Fuel gauge
The fuel gauge indicates the amount of
fuel in the fuel tank. The display segments of the fuel gauge disappear towards “E” (Empty) as the fuel level
decreases. When only two segments
are left near “E”, the fuel level warning
indicator comes on. Refuel as soon as
possible.
INSTRUMENT AND CONTROL FUNCTIONS
TIP
The display segment containing the
letter ‘E’ (Empty) stays on continuously
and is not an indicator of fuel level in
the fuel tank.
3
EAU1234F
Handlebar switches
Left
1. Dimmer switch “/”
2. Turn signal switch “/”
3. Horn switch “”
Self-diagnosis device
This model is equipped with a self-diagnosis device for the fuel electrical
circuit.
If a problem is detected in the fuel electrical circuit, all LCD segments of the
fuel gauge and the fuel level warning
indicator will flash alternately. If this occurs, have a Yamaha dealer check the
vehicle.
Right
1. Start switch “”
3-6
INSTRUMENT AND CONTROL FUNCTIONS
Dimmer switch “/”
EAU12401
Set this switch to “” for the high
beam and to “” for the low beam.
EAU12461
Turn signal switch “/”
To signal a right-hand turn, push this
switch to “”. To signal a left-hand
turn, push this switch to “”. 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.
EAU12501
Horn switch “”
Press this switch to sound the horn.
EAUM1133
Start switch “”
Push this switch while applying the
front or rear brake to crank the engine
with the starter. See page 5-1 for starting instructions prior to starting the engine.
EAU12902
Front brake lever
1. Front brake lever1. Rear brake lever
The front brake lever is located on the
right side of the handlebar. To apply
the front brake, pull this lever toward
the throttle grip.
Rear brake lever
The rear brake lever is located on the
left side of the handlebar. To apply the
rear brake, pull this lever toward the
handlebar grip.
EAU12952
3
3-7
INSTRUMENT AND CONTROL FUNCTIONS
WARNING
WARNING
Fuel tank cap
3
1. Fuel tank cap
To remove the fuel tank cap
1. Open the seat. (See page 3-11.)
2. Turn the fuel tank cap counterclockwise and pull it off.
EAU13193
To install the fuel tank cap
1. Insert the fuel tank cap into the
tank opening and turn it clockwise.
2. Close the seat.
EWA11092
Make sure that the fuel tank cap is
properly closed after filling fuel.
Leaking fuel is a fire hazard.
EAU13222
Fuel
Make sure there is sufficient gasoline in
the tank.
EWA10882
Gasoline and gasoline vapors are
extremely flammable. To avoid fires
and explosions and to reduce the
risk of injury when refueling, follow
these instructions.
1. Before refueling, turn off the engine and be sure that no one is sitting on the vehicle. 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. When
refueling, be sure to insert the
pump nozzle into the fuel tank filler
hole. 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.
3-8
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