Yamaha WHY50 User Manual

OWNER’S MANUAL

YH50

5XS-F8199-E0

EAU04576

INTRODUCTION

Welcome to the Yamaha world of motorcycling!

As the owner of the YH50, 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 YH50. 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!

IMPORTANT MANUAL INFORMATION

Particularly important information is distinguished in this manual by the following notations:

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS

INVOLVED!

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.

NOTE : A NOTE provides key information to make procedures easier or clearer.

NOTE :

This manual should be considered a permanent part of this scooter and should remain with it even if the

•

scooter is subsequently sold.
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 you have any questions concerning this manual,
please consult your Yamaha dealer.

EAU00005

IMPORTANT MANUAL INFORMATION

EW000002

PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING THIS
SCOOTER.

EAUM0023

YH50

OWNER'S MANUAL

© 2003 by MBK INDUSTRIE

1st Edition, January 2003

All rights reserved

Any reprinting or unauthorized use

without the written permission of

MBK INDUSTRIE

is expressly prohibited.

Printed in France.

EAU00009

TABLE OF CONTENTS

11 GIVE SAFETY THE RIGHT OF WAY

2 DESCRIPTION

3 INSTRUMENT AND CONTROL FUNCTIONS

4 PRE-OPERATION CHECKS

5 OPERATION AND IMPORTANT RIDING POINTS

6 PERIODIC MAINTENANCE AND MINOR REPAIR

7 SCOOTER CARE AND STORAGE

8 SPECIFICATIONS

9 CONSUMER INFORMATION

2

3

4

5

6

7

8

9

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EW000015

GIVE SAFETY THE RIGHT OF WAY

GIVE SAFETY THE RIGHT OF WAY.................................................. 1-1

Further safe-riding points ....................................................................1-2

1

GIVE SAFETY THE RIGHT OF WAY

Scooters are fascinating vehicles, which can give you an unsurpassed feeling of power and freedom. However,
they also impose certain limits, which you must accept; even the best scooter does not ignore the laws of

1

physics.

Regular care and maintenance are essential for preserving value and operating condition of your scooter.
Moreover, what is true for the scooter is also true for the rider: good performance depends on being in good
shape. Riding under the influence of medication, drugs and alcohol is, of course, out of the question. Scooter
riders—more than car drivers—must always be at their mental and physical best. Under the influence of
even small amounts of alcohol, there is a tendency to take dangerous risks.

Protective clothing is as essential for the scooter rider as seat belts are for car drivers and passengers.
Always wear a complete scooter suit (whether made of leather or tear-resistant synthetic materials with
protectors), sturdy boots, scooter gloves and a properly fitting helmet. Optimum protective wear, however,
should not encourage carelessness. Although full-coverage helmets and suits, in particular, create an illu­sion of total safety and protection, motorcyclists will always be vulnerable. Riders who lack critical self­control run the risk of going too fast and are apt to take chances. This is even more dangerous in wet weather.
The good motorcyclist rides safely, predictably and defensively — avoiding all dangers, including those
caused by others.

Enjoy your ride!

1-1

GIVE SAFETY THE RIGHT OF WAY

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 lining 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

•

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 carrier. A loose load will affect the stability of the scooter and could divert
your attention from the road.

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1

1-2

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DESCRIPTION

Left view .............................................................................................. 2-1

Right view............................................................................................ 2-2

2

DESCRIPTION

Left view

2

1

23

4

7

6

5

1. Rear brake lever (page 3-5, 6-12, 6-15)

2. Fuel gauge (page 3-3)

3. Speedometer (page 3-3)

4. Main switch (page 3-1, 3-8)

5. Final transmission oil filler cap (page 6-6)

6. Kick starter (page 3-7)

7. Air filter (page 6-7)

2-1

DESCRIPTION

Right view

14

13

12

10

9

8

11

2

8. Rear carrier (page 3-9)

9. Passenger seat —

10. Throttle grip (page 6-9, 6-15)

11. Front brake lever (page 3-5, 6-12, 6-15)

12. Luggage hook (page 3-9)

13. Battery / fuse (page 6-18 — 6-19)

14. Fuel and oil tank cap (page 3-5)

2-2

EAU00027

INSTRUMENT AND CONTROL FUNCTIONS

Main switch / steering lock .................................................................. 3-1

Indicator and warning lights ................................................................ 3-2

Speedometer unit ................................................................................ 3-3

Fuel gauge .......................................................................................... 3-3

Handlebar switches ............................................................................. 3-4

Front brake lever ................................................................................. 3-5

Rear brake lever ..................................................................................3-5

Fuel and 2-stroke engine oil tank caps ............................................... 3-5

Fuel ..................................................................................................... 3-6

Catalytic converter .............................................................................. 3-7

2-stroke engine oil ............................................................................... 3-7

Kickstarter ........................................................................................... 3-7

Rider seat ............................................................................................ 3-8

Storage compartment ......................................................................... 3-8

Carrier ................................................................................................. 3-9

Luggage hook ..................................................................................... 3-9

3

INSTRUMENT AND CONTROL FUNCTIONS

OPEN

PUSH

3

ZAUM0253

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.

ON “ ”

All electrical circuits are supplied with
power, the taillight and meter lighting
come on, and the engine can be
started. The key cannot be removed.

NOTE :

The headlight comes on as soon as the
engine is started.

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EAU04384

EAU00038

OFF “ ”

All electrical systems are off. The key
can be removed.

EAU04470

CHECK “ ”

The 2-stroke engine oil level warning
light should come on. See page 3-2 for
an explanation of the engine oil level
warning light.

EAU00040

LOCK “ ”

The steering is locked, and all electrical
systems are off. The key can be
removed.

To lock the steering

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.

To unlock the steering
Push the key in, and then turn it to “ ”
while still pushing it.

3-1

EW000016

Never turn the key to “ ” or “ ”
while the scooter is moving, otherwise

the electrical systems will be switched
off, which may result in loss of control
or an accident. Make sure that the scoo­ter is stopped before turning the key

to “ ” or “ ”.

ZAUM0184

1

1. Turn signal indicator light " "

2. High beam indicator light " `"

2

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Indicator and warning lights

EAU00057

Turn signal indicator light " "

This indicator light flashes when the
turn signal switch is pushed to the left
or right.

EAU00063

High beam indicator light " "

This indicator light comes on when the
high beam of the headlight is switched
on.

INSTRUMENT AND CONTROL FUNCTIONS

NOTE :

If the 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

1

ZAUM0357

1. Oil level indicator light " "

EAU02958

Oil level warning light " "

This warning light comes on when the
key is in the " " position or when the
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 equivalent 2-stroke
engine oil of either JASO grade "FC"
or ISO grades "EG-C" or "EG-D". The
warning light should go off after the 2­stroke engine oil tank has been refilled.

Yamaha dealer check the electrical cir­cuit.

Do not operate the scooter until you
know that the engine oil level is
sufficient.

EC000000

3

3-2

INSTRUMENT AND CONTROL FUNCTIONS

2

1

3

ZAUM0185

ZAUM0358

1

1. Speedometer

2. Odometer

EAU00098

Speedometer unit

The speedometer unit is equipped with
a speedometer and an odometer. The
speedometer shows riding speed. The
odometer shows the total distance
traveled.

1. Fuel gauge

EAU00113

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.

3-3

1

2

3
4

ZAUM0359

1. Dimmer switch " / "

2. Cancel button

3. Turn signal switch " / "

4. Horn switch " "

EAU00118

Handlebar switches

EAU03888

Dimmer switch " / "

Set this switch to " " for the high beam
and to " " for the low beam.

INSTRUMENT AND CONTROL FUNCTIONS

EAUM0097

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 turn off the turn si­gnal lights, push the cancel button, and
then release it.

EAU00129

Horn switch " "

Press this switch to sound the horn.

ZAUM0360

1. Start switch " "

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.

1

3

EAUM0063

EC000005

3-4

INSTRUMENT AND CONTROL FUNCTIONS

1

3

ZAUM0084

1. Front brake lever

Front brake lever

The front brake lever is located on the
right handlebar grip. To apply the front
brake, pull this lever toward the
handlebar grip.

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1

ZAUM0085

1. Rear brake lever

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Rear brake lever

The rear brake lever is located on the
left handlebar grip. To apply the rear
brake, pull this lever toward the
handlebar grip.

1

ZAUM0361

1. Oil tank cap

2. Fuel tank cap

2

EAU03463

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 for seat opening
and closing procedures.)

Fuel tank cap

To remove the fuel tank cap, turn it
counterclockwise, and then pull it off.
To install the fuel tank cap, turn it
clockwise.

3-5

INSTRUMENT AND CONTROL FUNCTIONS

EAU00185

1

EC000008

ZAUM0204

2-stroke engine oil tank cap

To remove the 2-stroke engine oil tank
cap, pull it off.
To install the 2-stroke engine oil tank
cap, push it into the oil tank opening.

EW000025

Make sure that the fuel and 2-stroke
engine oil tank caps are properly
installed before riding the scooter.

2

ZAUM0020

1. Filler tube

2. Fuel level

EAU03753

Fuel

Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the
bottom of the filler tube as shown.

EW000130

Do not overfill the fuel tank,

•

otherwise it may overflow when
the fuel warms up and expands.
Avoid spilling fuel on the hot

•

engine.

Immediately wipe off spilled fuel with
a clean, dry, soft cloth, since fuel may
deteriorate painted surfaces or plas­tic parts.

EAU04206

Recommended fuel:

REGULAR UNLEADED
GASOLINE ONLY

Fuel tank capacity:

Total amount:

7.2 L

Your Yamaha engine has been
designed to use regular unleaded
gasoline with 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.

3

3-6

INSTRUMENT AND CONTROL FUNCTIONS

Catalytic converter

This scooter is equipped with a catalytic
converter in the muffler.

The exhaust system is hot after
operation. Make sure that the
exhaust system has cooled down

3

before doing any maintenance work.

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 scooter near

•

possible fire hazards such as
grass or other materials that
easily burn.
Do not allow the engine to idle

•

too long.

EAU03098

EW000128

EC000114

EAU03750

2-stroke engine oil

Make sure that there is sufficient oil in
the 2-stroke engine oil tank. Add the
recommended 2-stroke engine oil if
necessary.

NOTE :

Make sure that the 2-stroke engine oil
tank cap is properly installed.

Recommended oil:

Yamalube 2 or equivalent
2-stroke engine oil
(JASO grade "FC",
or ISO grades "EG-C" or "EG-D")

Oil quantity:

1.3 L

1

ZAUM0362

1. Kickstarter

EAUS0015

Kickstarter

To start the engine, push the kickstarter
down lightly with your foot until the
gears engage, and then push it down
smoothly but forcefully.

3-7

OPEN

PUSH

ZAUM0253

EAU03091

Rider seat

To open the rider seat

1. Place the scooter on the
centerstand.

2. Insert the key into the main switch,
and then turn it counterclockwise.

NOTE :

Do not push inward when turning the
key.

3. Fold the rider seat up.

INSTRUMENT AND CONTROL FUNCTIONS

OPEN

UNLOCK

ZAUM0363

To close the rider seat

1. Fold the rider 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.

ZAUM0364

Storage compartment

To unlock the storage compartment
Insert the key in the lock and turn it 1/4
turn clockwise.

To open the storage compartment
when it is unlocked
Turn the knob 1/4 turn clockwise. The
knob will return to its original position
after released.

To close the storage compartment
Push the lid into the original position

To lock the storage compartment

N

E

P

O

OPEN

LOCK

UNLOCK

OPEN

O

P

E

N

LOCK

O

P

E

N

UNLOCK

EAUM0096

LOCK

3

3-8

Insert the key in the lock and turn it 1/4
turn counterclockwise, and then
remove the key.

INSTRUMENT AND CONTROL FUNCTIONS

EWA00005

Do not exceed the load limit of 1.5

•

kg for the storage compartment.
Do not exceed the maximum

•

load of 182 kg for the vehicle.

1

1

3

ZAUM0365

1. Carrier

Carrier

Do not exceed the load limit of

•

3.0 kg for the carrier.
Do not exceed the maximum

•

load of 182 kg for the vehicle.

3-9

EAU00320

EW000032

ZAUM0366

1. Luggage hook

Luggage hook

Do not exceed the load limit of

•

3.0 kg for the luggage hook.
Do not exceed the maximum

•

load of 182 kg for the vehicle.

EAUT0020

EWAT0002

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PRE-OPERATION CHECKS

Pre-operation check list....................................................................... 4-1

4

PRE-OPERATION CHECKS

The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpectedly,
even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leakage or
loss of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thorough visual
inspection, to check the following points before each ride.

Pre-operation check list

ITEM CHECKS PAGE

• Check fuel level in fuel tank.

Fuel • Refuel if necessary. 3-5 — 3-6

4

2-stroke engine oil • If necessary, add recommended oil to specified level. 3-5 — 3-7

Final transmission oil • Check vehicle for oil leakage. 6-6

Front brake • Check fluid level in reservoir. 3-5, 6-13 — 6-15

Rear brake • Check pedal free play. 3-5, 6-13 — 6-15

Throttle grip

• Check fuel line for leakage.

• Check oil level in oil tank.

• Check vehicle for oil leakage.

• Check operation.

• If soft or spongy, have Yamaha dealer bleed hydraulic system.

• If necessary, add recommended brake fluid to specified level.

• Check hydraulic system for leakage.

• Check operation.

• Adjust if necessary.

• Make sure that operation is smooth.

• Check cable free play.

• If necessary, have Yamaha dealer adjust cable free play

and lubricate cable and grip housing.

6-9, 6-15

EAU03439

4-1

PRE-OPERATION CHECKS

ITEM CHECKS PAGE

• Check for damage.

Wheels and tires

Brake levers

Centerstand

Chassis fasteners

Instruments, lights, signals • Check operation.
and switch • Correct if necessary.

Battery

NOTE :

Pre-operation checks should be made each time the scooter is used. Such an inspection can be accomplished in a very
short time; and the added safety it assures is more than worth the time involved.

• Check tire condition and tread depth.

• Check air pressure.

• Correct if necessary.

• Make sure that operation is smooth.

• Lubricate lever pivoting points if necessary.

• Make sure that operation is smooth.

• Lubricate pivot if necessary.

• Make sure that all nuts, bolts and screws are properly tightened.

• Tighten if necessary.

• Check fluid level.

• Fill with distilled water if necessary.

6-10 — 6-11

6-12, 6-15

6-16

—

3-2 — 3-4

6-18

EWA00033

4

If any item in the Pre-operation check list is not working properly, have it inspected and repaired before operating
the scooter.

4-2

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OPERATION AND IMPORTANT RIDING POINTS

Starting the engine .............................................................................. 5-1

Starting off........................................................................................... 5-2

Acceleration and deceleration ............................................................. 5-2

Braking ................................................................................................ 5-3

Tips for reducing fuel consumption ..................................................... 5-3

Engine break-in ................................................................................... 5-4

Parking ................................................................................................5-4

5

OPERATION AND IMPORTANT RIDING POINTS

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EW000129

Become thoroughly familiar

•

with all operating controls and

OPEN

PUSH

their functions before riding.
Consult a Yamaha dealer
regarding any control or
function that you do not
thoroughly understand.
Never start the engine or

•

operate it in a closed area for

5

any length of time. Exhaust fu­mes are poisonous, and
inhaling them can cause loss of
consciousness and death

ZAUM0253

EAU02960

Starting the engine

EC000046

See page 5-4 for engine break-in ins­tructions prior to operating the

vehicle for the first time.
within a short time. Always
make sure that there is
adequate ventilation.
For safety, always start the

•

engine with the centerstand

1. Turn the key to " ", and when the
oil level warning light comes on,
turn it to " ".

EC000045

down.

If the oil level warning light does not
come on, have a Yamaha dealer
check the electrical circuit.

ZAUM0367

3. While applying the front or rear
brake, start the engine by pushing
the start switch or by pushing the
kickstarter lever down.

NOTE :

If the engine fails to start by pushing
the start switch, release the switch, wait
a few seconds, and then try again. Each
starting attempt should be as short as
possible to preserve the battery. Do not
crank the engine more than 5 seconds
on any one attempt. If the engine does
not start with the starter motor, try using
the kickstarter.

2. Close the throttle completely.

5-1

ECA00045

For maximum engine life, never
accelerate hard when the engine is
cold!

OPERATION AND IMPORTANT RIDING POINTS

ZAUM0368

EAU04473

Starting off

NOTE :

Before starting off, allow the engine to
warm up.

1. While pulling the rear brake lever
with your left hand and holding the
carrier with your right hand, push
the scooter off the centerstand.

2. Sit astride the seat, and then
adjust the rear view mirrors.

3. Switch the turn signal on.

4. Check for oncoming traffic, and
then slowly turn the throttle grip
(on the right) in order to take off.

5. Switch the turn signal off.

5-2

ZAUM0268

EAU00434

Acceleration and
deceleration

The speed can be adjusted by opening
and closing the throttle. To increase the
speed, turn the throttle grip in direction
a . To reduce the speed, turn the
throttle grip in direction b .

5

OPERATION AND IMPORTANT RIDING POINTS

ZAUM0269

Braking

1. Close the throttle completely.

5

2. Apply both front and rear brakes
simultaneously while gradually
increasing the pressure.

Avoid braking hard or suddenly

•

(especially when leaning over
to one side), otherwise the
scooter may skid or overturn.

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EW000057

Railroad crossings, streetcar

•

rails, iron plates on road cons­truction sites, and manhole
covers become extremely
slippery when wet. Therefore,
slow down when approaching
such areas and cross them with
caution.
Keep in mind that braking on a

•

wet road is much more difficult.
Ride slowly down a hill, as
braking downhill can be very
difficult.

EAU03093

Tips for reducing fuel
consumption

Fuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:

Thoroughly warm up the engine.

•

Avoid high engine speeds during
acceleration.
Avoid high engine speeds with no

•

load on the engine.
Turn the engine off instead of

•

letting it idle for an extended length
of time (e.g., in traffic jams, at
traffic lights or at railroad
crossings).

5-3

OPERATION AND IMPORTANT RIDING POINTS

EAU00436

Engine break-in

There is never a more important period
in the life of your engine than the period
between 0 and 1,000 km. 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
1,000 km. 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.

EAUT0003*

0 — 150 km

Avoid operation above 1/3 throttle. Stop
the engine and let it cool for 5 to 10
minutes after every hour of operation.
Vary the speed of the scooter from time
to time. Do not operate it at one set
throttle position.

150 — 500 km

Avoid prolonged operation above 1/2
throttle.

500 — 1,000 km

Avoid cruising speeds in excess of 3/
4 throttle.

ECAT0001

After 1,000 km of operation, be sure
to replace the final transmission oil.

1,000 km and beyond

Avoid prolonged full throttle operation.
Vary speeds occasionally.

EC000049

If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.

EAU00461

Parking

When parking, stop the engine, and
then remove the key from the main
switch.

Since the engine and exhaust

•

system can become very hot,
park in a place where
pedestrians or children are not
likely to touch them.
Do not park on a slope or on

•

soft ground, otherwise the
scooter may overturn.

Never park in an area where there
are fire hazards such as grass or
other flammable materials.

EW000058

EC000062

5

5-4

EAU00462

PERIODIC MAINTENANCE AND MINOR REPAIR

Periodic maintenance and lubrication chart ............6-2

Removing and installing the panel .......................... 6-5

Panel A .................................................................... 6-5

Checking the spark plug ......................................... 6-5

Final transmission oil .............................................. 6-6

Cleaning the air filter element ................................. 6-7

Adjusting the carburetor ..........................................6-9

Adjusting the throttle cable free play ....................... 6-9

Tires ...................................................................... 6-10

Cast wheels .......................................................... 6-11

Adjusting the front brake lever free play ................6-12

Adjusting the front brake lever free play ................6-12

Checking the front brake pads .............................. 6-13

and rear brake shoes

Checking the brake fluid level ............................... 6-14

Changing the brake fluid ....................................... 6-15

Checking and lubricating the throttle grip .............. 6-15

and cable

Lubricating the front and rear brakes levers .......... 6-15

Checking and lubricating the centerstand ............. 6-16

Checking the front fork .......................................... 6-16

Checking the steering ........................................... 6-17

Checking the wheel bearings ................................6-17

Battery................................................................... 6-18

Replacing the fuse ................................................ 6-19

Replacing a headlight bulb .................................... 6-20

Replacing the brake taillight bulb .......................... 6-21

Replacing a turn signal light bulb .......................... 6-21

Troubleshooting ..................................................... 6-22

Troubleshooting chart............................................ 6-23

6

PERIODIC MAINTENANCE AND MINOR REPAIR

Safety is an obligation of the owner.
Periodic inspection, adjustment and
lubrication will keep your vehicle in the
safest and most efficient condition pos­sible. The most important points of
scooter inspection, adjustment, and
lubrication are explained on the
following pages.

If you are not familiar with scooter
maintenance work, have a Yamaha
dealer do it for you.

6

EAU03453

EW000060

EAU00466

EW000061

This scooter is designed for use on
paved roads only. If this scooter is
operated in abnormally dusty,
muddy or wet conditions, the air filter
element should be cleaned or
replaced more frequently, otherwise
rapid engine wear may result.
Consult a Yamaha dealer for proper
maintenance intervals.

6-1

PERIODIC MAINTENANCE AND MINOR REPAIR

Periodic maintenance and lubrication chart

NOTE :

The annual checks must be performed every year, except if a kilometer-based maintenance is performed instead.

•

From 30,000 km, repeat the maintenance intervals starting from 6,000 km.

•

Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills.

•

EAU03686

ODOMETER READING (x 1,000 km)

NO. ITEM

1 * Fuel line • Check fuel hoses and vacuum hose for cracks or damage. √√√√ √
2 Spark plug • Replace. √√√√ √

3 Air filter element

4 * Battery

5 * Front brake (See NOTE on page 6-4.)

6 * Rear brake

7 * Brake hose

8 * Wheels • Check runout and for damage. √√√√

• Clean. √√

• Replace. √√

• Check electrolyte level and specific gravity.

• Make sure that the breather hose is properly routed.

• Check operation, fluid level and vehicle for fluid leak

• Replace brake pads. Whenever worn to the limit

• Check operation and adjust brake lever free play. √√√√√ √

• Replace brake shoes. Whenever worn to the limit

• Check for cracks or damage. √√√√ √

• Replace. (See NOTE on page 6-4.) Every 4 years

CHECK OR MAINTENANCE JOB

6-2

1

6121824

√√√√ √

√√√√√ √

ANNUAL

CHECK

6

PERIODIC MAINTENANCE AND MINOR REPAIR

ODOMETER READING (x 1,000 km)

NO. ITEM

• Check tread depth and for damage.

9 * Tires

10 * Wheel bearings • Check bearing for looseness or damage. √√√√

11 * Steering bearings

12 * Chassis fasteners

13 Centerstand

14 * Front fork • Check operation and for oil leakage. √√√√

6

15 * Shock absorber assembly • Check operation and shock absorber for oil leakage. √√√√
16 * Carburetor • Adjust engine idling speed. √√√√√ √

17 * Autolube pump

18 Final transmission oil

19 * V-belt • Replace. Every 10,000 km

20 * Front and rear brake

switches

• Replace if necessary.

• Check air pressure.

• Correct if necessary.

• Check bearing play and steering for roughness. √√√√√

• Lubricate with lithium-soap-based grease. Every 24,000 km

• Make sure that all nuts, bolts and screws are

properly tightened.

• Check operation.

• Lubricate.

• Check operation.

• Bleed if necessary.

• Check vehicle for oil leakage. √√ √

• Change. √√√

• Check operation. √√√√√ √

CHECK OR MAINTENANCE JOB

1

6121824

√√√√ √

√√√√ √

√√√√ √

√√√√

ANNUAL

CHECK

6-3

PERIODIC MAINTENANCE AND MINOR REPAIR

ODOMETER READING (x 1,000 km)

NO. ITEM

21 Moving parts and cables • Lubricate. √√√√ √

22 * Lights, signals and • Check operation.

switches • Adjust headlight beam.

CHECK OR MAINTENANCE JOB

1

6121824

√√√√√ √

ANNUAL

CHECK

EAU03541*

NOTE :

The air filter needs more frequent service if you are riding in unusually wet or dusty areas.

•

Hydraulic brake service

•

Regularly check and, if necessary, correct the brake fluid level.

•

Every two years change the brake fluid.

•

Replace the brake hoses every four years and if cracked or damaged.

•

6

6-4

PERIODIC MAINTENANCE AND MINOR REPAIR

1

ZAUM0369

1. Panel A

Removing and installing the
panel

The panel shown above needs to be

6

removed to perform some of the main­tenance jobs described in this chapter.
Refer to this section each time the pa­nel needs to be removed and installed.

EAU01777

ZAUM0370

Panel A

To remove the panel

1. Open the seat. (See page 3-8 for
seat opening and closing
procedures.)

2. Remove the panel by pulling it up
as shown.

To install the panel

1. Insert the rear of the panel in the
original position, and then push
the front of the panel inward..

2. Close the seat.

EAUM0095

EAU01651

Checking the spark plug

The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
it should be removed and checked in
accordance with the periodic mainte­nance and lubrication chart. In addition,
the condition of the spark plug can
reveal the condition of the engine.
The porcelain insulator around the
center electrode of the spark plug
should be a medium-to-light tan (the
ideal color when the scooter is ridden
normally). If the spark plug shows a
distinctly different color, the engine
could be defective. Do not attempt to
diagnose such problems yourself.
Instead, have a Yamaha dealer check
the scooter.

6-5

PERIODIC MAINTENANCE AND MINOR REPAIR

a

ZAUM0037

a Spark plug gap

If the spark plug shows signs of
electrode erosion and excessive
carbon or other deposits, it should be
replaced.

Specified spark plug:

BR8HS (NGK)

Before installing a spark plug, the spark
plug gap should be measured with a
wire thickness gauge and, if necessary,
adjusted to specification.

Clean the surface of the spark plug
gasket and its mating surface, and then
wipe off any grime from the spark plug
threads.

Tightening torque:

Spark plug:

23 Nm (2.3 m•kg)

NOTE :

If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4 — 1/2 turn
past finger tight. However, the spark
plug should be tightened to the
specified torque as soon as possible.

EAU04228

Final transmission oil

The final transmission case must be
checked for oil leakage before each
ride. If any leakage is found, have a
Yamaha dealer check and repair the
scooter. In addition, the final transmis­sion oil must be changed as follows at
the intervals specified in the periodic
maintenance and lubrication chart.

1. Start the engine, warm it up by
riding the scooter for several mi­nutes, and then stop the engine.

2. Place the scooter on the
centerstand.

3. Place an oil pan under the final
transmission case to collect the
used oil.

6

Spark plug gap:

0.6 — 0.7 mm

6-6

PERIODIC MAINTENANCE AND MINOR REPAIR

Recommended final transmission oil:

1

2

See page 8-1.

Oil quantity:

0.11 L

EWA00062

1

ZAUM0371

1. Oil filler cap

2. Oil drain bolt

4. Remove the oil filler cap and drain
bolt to drain the oil from the final

6

transmission case.

5. Install the final transmission oil
drain bolt, and then tighten it to
the specified torque.

Tightening torque:

Final transmission oil drain bolt:

17 Nm (1.7 m•kg)

6. Add the specified amount of the
recommended final transmission
oil, and then install and tighten the
oil filler cap.

Make sure that no foreign

•

material enters the final trans­mission case.
Make sure that no oil gets on

•

the tire or wheel.

7. Check the final transmission case
for oil leakage. If oil is leaking,
check for the cause.

6-7

ZAUM0372

1. Screws

EAUM0071

Cleaning the air filter element

The air filter element should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
Clean the air filter element more
frequently if you are riding in unusually
wet or dusty areas.

1. Remove the air filter case cover
by removing the screws.

1

ZAUM0373

1. Air filter element

PERIODIC MAINTENANCE AND MINOR REPAIR

EC000082

1

3

ZAUM0156

2

Make sure that the air filter

•

element is properly seated in
the air filter case.

4

The engine should never be

•

operated without the air filter
element installed, otherwise the
piston(s) and/or cylinder(s)
may become excessively worn.

2. Pull the air filter element out, clean
it with solvent, and then squeeze
the remaining solvent out.

EW000075

Use only a dedicated parts cleaning
solvent. To avoid the risk of fire or
explosion, do not use gasoline or
solvents with a low flash point.

EC000089

To avoid damaging the foam material,
handle it gently and carefully, and do
not twist or wring it.

3. Apply oil of the recommended
type to the entire surface of the
element, and then squeeze the
excess oil out.

NOTE :

The air filter element should be wet but
not dripping

Recommended oil:

Engine oil

4. Insert the element into the air filter
case.

6-8

5. Install the air filter case cover by
installing the screws.

6

PERIODIC MAINTENANCE AND MINOR REPAIR

EAU00631

Adjusting the carburetor

The carburetor is an important part of
the engine and requires very
sophisticated adjustment. Therefore, all
carburetor adjustments should be left
to a Yamaha dealer, who has the
necessary professional knowledge and
experience.

6

a

ZAUM0051

a Throttle cable free play

Adjusting the throttle cable
free play

The throttle cable free play should
measure 1.5 — 3.0 mm at the throttle
grip. Periodically check the throttle cable
free play and, if necessary, have a
Yamaha dealer adjust it.

EAU00635

6-9

PERIODIC MAINTENANCE AND MINOR REPAIR

ZAUM0053

EAU04551

Tires

To maximize the performance,
durability, and safe operation of your
scooter, note the following points
regarding the specified tires.

Tire air pressure

The tire air pressure should be checked
and, if necessary, adjusted before each
ride.

The tire air pressure must be

•

checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).
The tire air pressure must be

•

adjusted in accordance with the
riding speed and with the total
weight of rider, passenger,
cargo, and accessories
approved for this model.

Tire air pressure

(measured on cold tires)

Load* Front Rear

Up to 90 kg*

90 kg ~
maximum*

Maximum load* 182 kg

* Total weight of rider, passenger, cargo and

accessories

180 kPa

1.8 kgf/cm

1.8 bar

180 kPa

1.8 kgf/cm

1.8 bar

2

2

190 kPa

1.9 kgf/cm

1.9 bar

210 kPa

2.1 kgf/cm

2.1 bar

EW000082

Because loading has an enormous
impact on the handling, braking, per­formance and safety characteristics of
your scooter, you should keep the
following precautions in mind.

NEVER OVERLOAD THE SCOO-

•

TER! Operation of an overloaded
scooter may result in tire damage,
loss of control, or severe injury.
Make sure that the total weight of
rider, cargo, and accessories
does not exceed the specified
maximum load for the vehicle.
Do not carry along loosely

•

packed items, which can shift

2

during a ride.
Securely pack the heaviest items

•

close to the center of the scooter

2

and distribute the weight evenly
on both sides.
Adjust the suspension and tire air

•

pressure with regard to the load.
Check the tire condition and air

•

pressure before each ride.

EW000077

6

6-10

PERIODIC MAINTENANCE AND MINOR REPAIR

2

ZAUM0054

1. Tire tread depth

2. Tire sidewall

Tire inspection

The tires must be checked before each
ride. If the center tread depth reaches

6

the specified limit, if the tire has a nail
or glass fragments in it, or if the sidewall
is cracked, have a Yamaha dealer re­place the tire immediately.

Minimum tire tread depth
(front and rear)

NOTE :

The tire tread depth limits may differ
from country to country. Always comply
with the local regulations.

1

1.6 mm

Tire information

This scooter is equipped with tubeless
tires.

Front

Manufacturer Size Type

MICHELIN 2

1/2

-16 42M M29S TT

Rear

Manufacturer Size Type

MICHELIN 2

3/4

-16 46M M29S TT

EAU03773

Cast wheels

To maximize the performance,
durability, and safe operation of your
scooter, note the following points
regarding the specified wheels.

The wheel rims should be

•

checked for cracks, bends or
warpage before each ride. If any
damage is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair
to the wheel. A deformed or
cracked wheel must be replaced.
The wheel should be balanced

•

whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse
handling characteristics, and a
shortened tire life.
Ride at moderate speeds after

•

changing a tire since the tire surface
must first be "broken in" for it to
develop its optimal characteristics.

6-11

PERIODIC MAINTENANCE AND MINOR REPAIR

a

ZAUM0107

a Front brake lever free play

EAU00697*

Adjusting the front brake
lever free play

The brake lever free play should
measure 10—20 mm as shown.
Periodically check the brake lever free
play and, if necessary, have a Yamaha
dealer adjust it.

EW000100

An incorrect brake lever free play
indicates a hazardous condition in
the brake system. Do not operate the
scooter until the brake system has
been checked or repaired by a
Yamaha dealer.

a

ZAUM0108

a Rear brake lever free play

EAU04469

Adjusting the rear brake
lever free play

The brake lever free play should
measure 10—20 mm as shown.
Periodically check the brake lever free
play and, if necessary, adjust it as
follows.

1

ZAUM0374

1. Adjusting nut

b

a

To increase the brake lever free play,
turn the adjusting nut at the brake shoe
plate in direction a . To decrease the
brake lever free play, turn the adjusting
nut in direction b .

EW000101

If proper adjustment cannot be
obtained as described, have a
Yamaha dealer make this
adjustment.

6

6-12

PERIODIC MAINTENANCE AND MINOR REPAIR

EAU00720

Checking the front brake
pads and rear brake shoes

The front brake pads and the rear brake
shoes must be checked for wear at the
intervals specified in the periodic main­tenance and lubrication chart.

ZAUM0375

a

1
2

ZAUM0376

a Lining thickness

EAU01436

Front brake pads

Check each front brake pad for damage
and measure the lining thickness. If a

6

brake pad is damaged or if the lining
thickness is less than 0.5 mm, have a
Yamaha dealer replace the brake pads
as a set.

1. Wear indicator

2. Wear limit

EAU04502

Rear brake shoes

The rear brake is provided with a wear
indicator, which allows you to check the
brake shoe wear without having to
disassemble the brake. To check the
brake shoe wear, check the position of
the wear indicator while applying the
brake. If a brake shoe has worn to the
point that the wear indicator reaches
the wear limit line, have a Yamaha dea­ler replace the brake shoes as a set.

6-13

PERIODIC MAINTENANCE AND MINOR REPAIR

1

ZAUM0377

1. Brake fluid level

EAU00732

Checking the brake fluid
level

Insufficient brake fluid may allow air to
enter the brake system, possibly
causing it to become ineffective.
Before riding, check that the brake fluid
is above the minimum level mark and
replenish if necessary. A low brake fluid
level may indicate worn brake pads
and/or brake system leakage. If the
brake level is low, be sure to check the
brake pads for wear and the brake
system for leakage.

Observe these precautions:

When checking the fluid level,

•

make sure that the top of the
master cylinder is level by turning
the handlebars.
Use only the recommended

•

quality brake fluid, otherwise the
rubber seals may deteriorate,
causing leakage and poor braking
performance.

Recommended brake fluid:

DOT 4

NOTE :

If DOT 4 is not available, DOT 3 can be
used.

Refill with the same type of brake

•

fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking performance.

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.
Brake fluid may deteriorate

•

painted surfaces or plastic parts.
Always clean up spilled fluid
immediately.
As the brake pads wear, it is nor-

•

mal for the brake fluid level to
gradually go down. However, if the
brake fluid level goes down
suddenly, have a Yamaha dealer
check the cause.

6

6-14

PERIODIC MAINTENANCE AND MINOR REPAIR

Changing the brake fluid

Have a Yamaha dealer change the
brake fluid at the intervals specified in
the periodic maintenance and
lubrication chart. In addition, have the
brake hose replaced every four years
or whenever it is damaged or leaking.

Adjusting the Autolube pump

The Autolube pump is a vital and
sophisticated component of the engine,
which must be adjusted by a Yamaha
dealer at the intervals specified in the

6

periodic maintenance and lubrication
chart.

EAUM0008

EAU00774

EAU04034

Checking and lubricating the
throttle grip and cable

The operation of the throttle grip should
be checked before each ride. In addi­tion, the cable should be lubricated or
replaced at the intervals specified in the
periodic maintenance chart.

ZAUM0061

EAU03118

Lubricating the front and rear
brake levers

The pivoting points of the front and rear
brake levers must be lubricated at the
intervals specified in the periodic main­tenance and lubrication chart.

Recommended lubricant:

Lithium-soap-based grease
(all-purpose grease)

6-15

ZAUM0062

EAU04123

Checking and lubricating the
centerstand

The operation of the centerstand should
be checked before each ride, and the
pivots and metal-to-metal contact sur­faces should be lubricated if necessary.

EWA00055

PERIODIC MAINTENANCE AND MINOR REPAIR

To check the operation

1. Place the scooter on a level sur­face and hold it in an upright po­sition.

2. While applying the front brake,
push down hard on the
handlebars several times to check

ZAUM0378

EAU02939

Checking the front fork

The condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main­tenance and lubrication chart.

To check the condition

EW000115

if the front fork compresses and
rebounds smoothly.

EC000098

If any damage is found or the front
fork does not operate smoothly, have
a Yamaha dealer check or repair it.

6

If the centerstand does not move up
and down smoothly, have a Yamaha
dealer check or repair it.

Recommended lubricant:

Lithium-soap-based grease
(all-purpose grease)

Securely support the scooter so that
there is no danger of it falling over.

Check the inner tubes for scratches,
damage and excessive oil leakage.

6-16

PERIODIC MAINTENANCE AND MINOR REPAIR

ZAUM0379

Checking the steering

Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as
follows at the intervals specified in the

6

periodic maintenance and lubrication
chart.

1. Place a stand under the engine
to raise the front wheel off the
ground.

EAU00794

EW000115

2. Hold the lower ends of the front
fork legs and try to move them
forward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the
steering.

EAU01144

Checking the wheel bearings

The front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and
lubrication chart. If there is play in the
wheel hub or if the wheel does not turn
smoothly, have a Yamaha dealer check
the wheel bearings.

Securely support the scooter so that
there is no danger of it falling over.

6-17

PERIODIC MAINTENANCE AND MINOR REPAIR

EAUM0049

Battery

A poorly maintained battery will corrode
and discharge quickly. The electrolyte
level, battery lead connections and
breather hose routing should be
checked before each ride and at the
intervals specified in the periodic main­tenance and lubrication chart.

To check the electrolyte level

1. Place the scooter on a level sur­face and hold it in an upright posi­tion.

NOTE :

Make sure that the scooter is positioned
straight up when checking the
electrolyte level.

2. Remove panel A. (See page 6-5
for panel removal and installation
procedures.)

1

ZAUM0106

1. Maximum level mark

2. Minimum level mark

3. Check the electrolyte level in the
battery.

NOTE :

The electrolyte should be between the
minimum and maximum level marks.

4. If the electrolyte is at or below the
minimum level mark, add distilled
water to raise it to the maximum
level mark.

UPPER
LOWER

+

2

Electrolyte is poisonous and

•

dangerous since it contains
sulfuric acid, which causes
severe burns. Avoid any con­tact with skin, eyes or clothing
and always shield your eyes
when working near batteries. In
case of contact, administer the
following FIRST AID.

EXTERNAL: Flush with

•

plenty of water.
INTERNAL: Drink large

•

quantities of water or milk
and immediately call a
physician.
EYES: Flush with water for

•

15 minutes and seek prompt
medical attention.

Batteries produce explosive

•

hydrogen gas. Therefore, keep
sparks, flames, cigarettes, etc.,
away from the battery and
provide sufficient ventilation
when charging it in an enclosed
space.

EW000116

6

6-18

PERIODIC MAINTENANCE AND MINOR REPAIR

KEEP THIS AND ALL BATTE-

•

RIES OUT OF THE REACH OF
CHILDREN.

Use only distilled water, as tap water
contains minerals that are harmful
to the battery.

5. Check and, if necessary, tighten
the battery lead connections and
correct the breather hose routing.

6

To store the battery

1. If the scooter will not be used for
more than one month, remove the
battery, fully charge it, and then
place it in a cool, dry place.

2. If the battery will be stored for
more than two months, check the
specific gravity of the electrolyte
at least once a month and fully
charge the battery whenever
necessary.

3. Fully charge the battery before
installation.

EC000100

4. After installation, make sure that
the battery leads are properly
connected to the battery terminals
and that the breather hose is
properly routed, in good condition,
and not obstructed.

EC000099

If the breather hose is positioned in
such a way that the frame is exposed
to electrolyte or gas expelled from
the battery, the frame could suffer
structural and external damages.

6-19

1

ZAUM0380

1. Fuse

EAU00809

Replacing the fuse

The fuse holder is located beside the
battery compartment behind panel A.
(See page 6-5 for panel removal and
installation procedures.)

If the fuse is blown, replace it as follows.

1. Turn the key to " " and turn off
all electrical circuits.

2. Remove the blown fuse, and then
install a new fuse of the specified
amperage.

Specified fuse:

7.5 A

PERIODIC MAINTENANCE AND MINOR REPAIR

EC000103

Do not use a fuse of a higher amperage
rating than recommended to avoid
causing extensive damage to the
electrical system and possibly a fire.

3. Turn the key to " " and turn on
the electrical circuits to check if the
devices operate.

4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.

1

ZAUM0381

1. Headlight bulb holder

EAU00846

Replacing the headlight bulb

If the headlight bulb burns out, replace
it as follows.

1. Remove the headlight unit by
removing the screws.

2. Disconnect the headlight lead
connectors.

3. Remove the headlight bulb holder
by pushing it inward and turning it
counterclockwise, and then
remove the defective bulb.

EW000119

Headlight bulbs get very hot.
Therefore, keep flammable products
away from a lit headlight bulb, and
do not touch the bulb until it has
cooled down.

4. Place a new bulb into position,
and then secure it with the bulb
holder.

5. Connect the lead connectors, and
then install the headlight unit by
installing the screws.

6. Have a Yamaha dealer adjust the
headlight beam if necessary.

6

6-20

PERIODIC MAINTENANCE AND MINOR REPAIR

ZAUM0382

Replacing the brake/taillight
bulb

1. Remove the brake/taillight lens by
removing the screws.

6

2. Remove the brake/taillight bulb
holder by turning it 1/4 turn
counter-clockwise.

3. Remove the defective bulb.

4. Place a new bulb into position,
and then secure it with the bulb
holder.

5. Place the brake/taillight lens in the
original position, and then install
the screw.

EAUM0037

ZAUM0383

EAU03497

Replacing a turn signal light
bulb

1. Remove the turn signal light lens
by removing the screw.

2. Remove the defective bulb by
pushing it in and turning it
counterclockwise.

3. Insert a new bulb into the socket,
push it in, and then turn it
clockwise until it stops.

4. Install the lens by installing the
screw.

ECA00065

Do not overtighten the screw,
otherwise the lens may break.

6-21

EAU01008

Troubleshooting

Although Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems
yourself. However, should your scooter
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the scooter
properly.
Use only genuine Yamaha replacement
parts. Imitation parts may look like
Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.

PERIODIC MAINTENANCE AND MINOR REPAIR

6

6-22

PERIODIC MAINTENANCE AND MINOR REPAIR

Troubleshooting chart

Keep away open flames and do not smoke while checking or working on the fuel system.

EAU01397

EW000125

1. Fuel

Check the fuel level in

There is enough fuel.

the fuel tank.

There is no fuel.

Check the compression.

Supply fuel.

The engine does not start.
Check the compression.

2. Compression

There is compression.

Operate the electric starter.

6

3. Ignition

Remove the spark plug
and check the electrodes.

4. Battery

Operate the electric starter.

There is no compression.

Wet

Dry

The engine turns over
quickly.

The engine turns over
slowly.

Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.

Have a Yamaha dealer check the vehicle.

Check the ignition.

Have a Yamaha dealer
check the vehicle.

The battery is good.

Check the battery lead connections,
and charge the battery if necessary.

6-23

Open the throttle halfway and operate
the electric starter.

The engine does not start.
Check the battery.

The engine does not start.
Have a Yamaha dealer
check the vehicle.

EAU03434

SCOOTER CARE AND STORAGE

Care .................................................................................................... 7-1

Storage ............................................................................................... 7-3

7

SCOOTER CARE AND STORAGE

Care

While the open design of a scooter
reveals the attractiveness of the
technology, it also makes it more
vulnerable. Rust and corrosion can
develop even if high-quality
components are used. A rusty exhaust
pipe may go unnoticed on a car,
however, it detracts from the overall
appearance of a scooter. Frequent and
proper care does not only comply with
the terms of the warranty, but it will also
keep your scooter looking good, extend
its life and optimize its performance.

Before cleaning

7

1. Cover the muffler outlet with a
plastic bag after the engine has
cooled down.

2. Make sure that all caps and covers
as well as all electrical couplers
and connectors, including the
spark plug cap, are tightly
installed.

3. Remove extremely stubborn dirt,
like oil burnt onto the crankcase,
with a degreasing agent and a
brush, but never apply such
products onto seals, gaskets and
wheel axles. Always rinse the dirt
and degreaser off with water.

Cleaning

Avoid using strong acidic wheel

•

cleaners, especially on spoked
wheels. If such products are
used on hard-to-remove dirt, do
not leave the cleaner on the
affected area any longer than
instructed. Also, thoroughly
rinse the area off with water,
immediately dry it, and then
apply a corrosion protection
spray.
Improper cleaning can damage

•

windshields, cowlings, panels
and other plastic parts. Use
only a soft, clean cloth or
sponge with mild detergent and
water to clean plastic.

7-1

ECA00011

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 wheel and
swingarm bearings, fork and
brakes), electric components
(couplers, connectors, instru­ments, switches and lights),
breather hoses and vents.

SCOOTER CARE AND STORAGE

For scooters equipped with a

•

windshield: 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.

After normal use
Remove dirt with warm water, a mild
detergent, and a soft, clean sponge,
and then rinse thoroughly with clean
water. Use a toothbrush or bottlebrush
for hard-to-reach areas. Stubborn dirt
and insects will come off more easily if
the area is covered with a wet cloth for
a few minutes before cleaning.

After riding in the rain, near the sea
or on salt-sprayed roads
Since sea salt or salt sprayed on the
roads during winter are extremely cor­rosive in combination with water, carry
out the following steps after each ride
in the rain, near the sea or on salt­sprayed roads.

NOTE :

Salt sprayed on roads in the winter may
remain well into spring.

1. Clean the scooter with cold water
and a mild detergent after the
engine has cooled down.

ECA00012

Do not use warm water since it
increases the corrosive action of the
salt.

2. Apply a corrosion protection spray
on all metal, including chrome­and nickel-plated, surfaces to
prevent corrosion.

7-2

After cleaning

1. Dry the scooter with a chamois or
an absorbing cloth.

2. Use a chrome polish to shine
chrome, aluminum and stainless­steel parts, including the exhaust
system. (Even the thermally
induced discoloring of stainless­steel exhaust systems can be
removed through polishing.)

3. To prevent corrosion, it is
recommended to apply a corro­sion protection spray on all metal,
including chrome- and nickel­plated, surfaces.

4. Use spray oil as a universal
cleaner to remove any remaining
dirt.

5. Touch up minor paint damage
caused by stones, etc.

6. Wax all painted surfaces.

7. Let the scooter dry completely
before storing or covering it.

7

SCOOTER CARE AND STORAGE

EWA00002

Make sure that there is no oil

•

or wax on the brakes or tires. If
necessary, clean the brake
discs and brake linings with a
regular brake disc cleaner or
acetone, and wash the tires with
warm water and a mild
detergent.
Before operating the scooter

•

test its braking performance
and cornering behavior.

ECA00013

7

Apply spray oil and wax

•

sparingly and make sure to
wipe off any excess.
Never apply oil or wax to any

•

rubber and plastic parts, but
treat them with a suitable care
product.
Avoid using abrasive polishing

•

compounds as they will wear
away the paint.

NOTE :

Consult a Yamaha dealer for advice on
what products to use.

Storage

Short-term

Always store your scooter in a cool, dry
place and, if necessary, protect it
against dust with a porous cover.

ECA00015

Storing the scooter in a poorly

•

ventilated room or covering it
with a tarp, while it is still wet,
will allow water and humidity to
seep in and cause rust.
To prevent corrosion, avoid

•

damp cellars, stables (because
of the presence of ammonia)
and areas where strong
chemicals are stored.

Long-term

Before storing your scooter for several
months:

1. Follow all the instructions in the
"Care" section of this chapter.

2. Drain the carburetor float chamber
by loosening the drain bolt; this will
prevent fuel deposits from building
up. Pour the drained fuel into the
fuel tank.

3. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.

4. Perform the following steps to
protect the cylinder, piston rings,
etc. from corrosion.

7-3

SCOOTER CARE AND STORAGE

a. Remove the spark plug cap

and spark plug.

b. Pour a teaspoonful of engine

oil into the spark plug bore.

c. Install the spark plug cap onto

the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit
sparking during the next step.)

d. Turn the engine over several

times with the starter. (This will
coat the cylinder wall with oil.)

e. Remove the spark plug cap

from the spark plug, and then
install the spark plug and the
spark plug cap.

EWA00003

To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turning
the engine over.

5. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the sidestand/
centerstand.

6. Check and, if necessary, correct
the tire air pressure, and then lift
the scooter so that both of its
wheels are off the ground.
Alternatively, turn the wheels a
little every month in order to
prevent the tires from becoming
degraded in one spot.

7. Cover the muffler outlet with a
plastic bag to prevent moisture
from entering it.

8. Remove the battery and fully
charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an
excessively cold or warm place
(less than 0 °C or more than 30
°C). For more information on
storing the battery, see page 6-

18.

NOTE :

Make any necessary repairs before
storing the scooter.

7

7-4

EAU01038

SPECIFICATIONS

Specifications ...................................................................................... 8-1

Conversion table ................................................................................. 8-4

8

SPECIFICATIONS

Specifications

Model YH50

Dimensions:

Overall length 1.940 mm
Overall width 685 mm
Overall height 1.105 mm
Seat height 765 mm
Wheelbase 1.294 mm
Minimum ground clearance 125 mm
Minimum turning radius 1.800 mm

Weight:

Wet (with oil and a full fuel tank) 78 kg

Engine:

Engine type Air cooled, 2 strokes
Cylinder arrangement Single cylinder, horizontal
Displacement 49.2 cm3
Bore x stroke 40.0 x 39.2
Compression ratio 7.25:1

8

Starting system type Electric and kick starter
Lubrication system Separate lubrication

(Autolube)

Engine oil:

Type Yamalube 2

or 2 strokes engine oil
Classification Jaso FC ou ISO EG-C, EG-D
Capacity 1.3 L

Transmission oil:

Type SAE 10W30 type SE
Capacity

Périodic oil change 0.11L
Total amount 0.13L

Air filter type: Wet type element

Fuel:

Recommended fuel Regular unleaded gasoline

(RON 91 mini)

Fuel tank capacity 7L

Carburetor:

Type / quantity PY-12
Manufacturer GURTNER

Spark plug:

Type / Manufacturer BR8HS / NGK
Spark plug gap 0.6—0.7 mm

Clutch type: Dry, centrifugal automatic

Transmission:

Primary reduction system Helical gear
Primary reduction ratio 52/13 (4.000)
Secondary reduction system Spur gear
Secondary reduction ratio 45/12 (3.750)
Transmission type V-belt automatic
Operation Centrifugal automatic type

8-1

SPECIFICATIONS

Chassis:

Frame type Steel tube underbone
Caster angle ((degree)) 25°
Trail 101.3 mm

Tires:

Front:

Type Tubeless
Size 2 1/2-16 42M
Manufacturer / Model MICHELIN / M29S TT

Rear:

Type Tubeless
Size 2 3/4-16 46M

Manufacturer / Model MICHELIN / M29S TT
Maximum load * 182 Kg
Air pressure (cold tire):

Up to 90 Kg load*

Front 180 kpa

Rear 190 kpa
90 kg load — maximum
load *

Front 180 kpa

Rear 210 kpa

* Total weight of rider, passenger, cargo and accessories.

Wheels:

Front

Type Cast wheel
Size 16 X MT 1.60

Rear

Type Cast wheel
Size 16 X MT 1.85

Brakes:

Front

Type Single disc brake
Operation Right hand operation
Type brake fluid DOT 4

Rear

Type Single drum brake
Operation Left hand operation

Suspension:

Front suspension Telescopic fork
Rear suspension Unit swing

Shock absorber:

Front fork type Coil spring/oil damper
Rear shock absorber Coil spring/oil damper
assembly type

Wheel travel:

Front wheel travel 80 mm
Rear wheel travel 70 mm

8

8-2

SPECIFICATIONS

Electrical:

Ignition system type C.D.I
Charging system Flywheel magneto
Battery

Model GM4-3B, YB4L-B, FB4L-B
Voltage/capacity 12 V / 4 Ah

Headlight type: Bulb

Bulbs (voltage/wattage x quantity):

Headlight 12V, 35W/35Wx1
Brake/brake light 12V, 5W/21Wx1
Turn signal light

Front 12V, 10Wx2

Rear 12V, 10Wx2
Meter lights 12V, 1.2Wx2
High beam indicator light 12V, 1.2Wx1
Turn signal indicator light 12V, 1.2Wx1
Oil warning light 12V, 2Wx1

8

Fuses:

Main fuse 7.5 A

8-3

Conversion table

All specification data in this manual are listed in SI and
METRIC UNITS.

Use this table to convert METRIC unit values to IMPERIAL
unit values.

Example:

METRIC VALUE CONVERSION

FACTOR

2 mm 0.03937 = 0.08 in

IMPERIAL VALUE

METRIC SYSTEM TO IMPERIAL SYSTEM

m•kgf

Torque

Weight

Speed km/h

Distance

Volume,
Capacity

Miscellaneous

m•kgf
cm•kgf
cm•kgf

kg
g

km
m
m
cm
mm

cc (cm
cc (cm
L (liter)
L (liter)

kg/mm
kgf/cm

C

°

SPECIFICATIONS

EAU04513

Conversion table

Metric unit Conversion factor Imperial unit

7.233

86.794

0.0723

0.8679

2.205

0.03527

0.6214 mi/h

0.6214

3.281

1.094

0.3937

0.03937

3

)

3

)

2

0.03527

0.06102

0.8799

0.2199

55.997

14.2234

1.8 + 32

ft•lbf
in•lbf
ft•lbf
in•lbf

lb
oz

mi
ft
yd
in
in

oz (IMP liq.)
cu•in
qt (IMP liq.)
gal (IMP liq.)

lb/in

2

psi (lbf/in
°F

)

8

8-4

EAU01039

CONSUMER INFORMATION

Identification numbers .........................................................................9-1

Key identification number .................................................................... 9-1

Vehicle identification number .............................................................. 9-1

Model label .......................................................................................... 9-2

9

CONSUMER INFORMATION

EAU02944

Identification numbers

Record the key identification number,
vehicle identification number and model
label information in the spaces provided
below for assistance when ordering
spare parts from a Yamaha dealer or
for reference in case the vehicle is
stolen.

1. KEY IDENTIFICATION NUMBER:

2. VEHICLE IDENTIFICATION
NUMBER:

9

3. MODEL LABEL INFORMATION:

1

ZAUM0070

1. Key identification number

EAU01041

Key identification number

The key identification number is
stamped into the key tag.
Record this number in the space
provided and use it for reference when
ordering a new key.

1

ZAUM0384

1. Vehicle identification number

EAU01044

Vehicle identification number

The vehicle identification number is
stamped into the frame.

NOTE :

The vehicle identification number is
used to identify your scooter and may
be used to register your scooter with
the licensing authority in your area.

9-1

1

ZAUM0385

1. Model label

EAU01278

Model label

The model label is affixed to the bottom
of the seat. (See page 3-8 for seat
opening procedures.) Record the infor­mation on this label in the space
provided. This information will be
needed when ordering spare parts from
a Yamaha dealer.

CONSUMER INFORMATION

9-2

9

CONSUMER INFORMATION

YOU ARE HEREBY REMINDED THAT MODIFICATIONS TO THE ENGINE OR THE POWER OF THE SCOOTER ARE
FORBIDDEN BY LAW.

ANY CHANGES FOR THE PURPOSE OF RAISING THE TOP SPEED OF THE VEHICLE OR BOOSTING THE POWER
OF THE ENGINE WOULD LEAD TO THE SCOOTER BEING
CLASSED AS A SCOOTER.

THIS WOULD REQUIRE THE OWNER:

TO OBTAIN A NEW TYPE APPROVAL

•

TO OBTAIN A SCOOTER REGISTRATION LICENSE

•

TO HOLD A DRIVING LICENSE

•

IN ADDITION, SUCH CHANGES WOULD LEAD TO THE INVALIDATION OF TIE INSURANCE COVER, SINCE
INSURANCE POLICIES EXPLICITLY FORBID TECHNICAL CHANGES WHICH HAVE THE PURPOSE OF BOOSTING
THE PERFORMANCE.

FOR THE REASONS SET OUT ABOVE, A BREACH OF THE PROHIBITION TO TAMPER WITH THE ENGINE IS

9

PUNISHED BY LAW BY APPROPRIATE FINES INCLUDING THE CONFISCATION OF THE VEHICLE.

EAU01052*

FINES ARE ALSO INFLICTED, ACCORDING TO CIRCUMSTANCES, FOR DRIVING WITHOUT A HELMET AND A
LICENSE PLATE, AS WELL AS FOR TAX EVASION (OMITTING TO PAY OWNERSHIP TAX).

DRIVING WITHOUT A DRIVING LICENSE IS A CRIMINAL OFFENSE.

9-3

YAMAHA MOTOR CO., LTD.

PRINTED IN FRANCE

2003.01

(E)