
6-35
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EC000103
cCDo not use a fuse of a higher
amperage rating than recommend-
ed to avoid causing extensive
damage to the electrical system
and possibly a fire.3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.2. Unhook the headlight bulb holder
as shown, and then remove the
defective bulb.
a
1
1. Headlight bulb holder
a. Unhook.
EAU03874
Replacing a headlight bulbHeadlight bulb, replacingThis scooter is equipped with quartz
bulb headlights. If a headlight bulb
burns out, replace it as follows.
1. Disconnect the headlight cou-
pler, and then remove the head-
light bulb cover.
1
2
1. Headlight coupler
2. Headlight bulb cover
Specified fuses:
Main fuse: 30 A
Signaling system fuse: 15 A
Headlight fuse: 15 A
Ignition fuse: 10 A
Radiator fan fuse: 15 A
Hazard fuse: 10 A
Clock fuse: 10 A
5GJ-9-E1 9/4/01 1:27 PM Page 78

6-36
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EW000119
wHeadlight bulbs get very hot.
Therefore, keep flammable prod-
ucts away from a lit headlight bulb,
and do not touch the bulb until it
has cooled down.3. Place a new bulb into position,
and then secure it with the bulb
holder.
a
a. Do not touch this area.
EAU03087
TroubleshootingTroubleshootingAlthough Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition sys-
tems, for example, can cause poor
starting and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your scooter
require any repair, take it to a
Yamaha dealer, whose skilled techni-
cians have the necessary tools,
experience, and know-how to service
the scooter properly.
Use only genuine Yamaha replace-
ment 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.
EC000105
cCDo not touch the glass part of the
headlight bulb to keep it free from
oil, otherwise the transparency of
the glass, the luminosity of the
bulb, and the bulb life will be
adversely affected. Thoroughly
clean off any dirt and fingerprints
on the headlight bulb using a cloth
moistened with alcohol or thinner.4. Install the bulb cover, and then
connect the coupler.
5. Have a Yamaha dealer adjust
the headlight beam if necessary.
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6-37
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU02990
Troubleshooting chartsTroubleshooting chartsStarting problems or poor engine performance
EW000125
wKeep away open flames and do not smoke while checking or working on the fuel system.Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plugs
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.DryWet
The engine does not start.
Check the battery.Open the throttle halfway and operate
the electric starter.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
5GJ-9-E1 9/4/01 1:27 PM Page 80

8-3
SPECIFICATIONS
8
Wheels
Front
Type Cast wheel
Size 14 M/C ×MT3.50
Rear
Type Cast wheel
Size 14 M/C ×MT4.50
Brakes
Front
Type Single disc brake
Operation Right hand
Fluid DOT 4
Rear
Type Single disc brake
Operation Left hand
Fluid DOT 4Suspension
Front Telescopic fork
Rear Swingarm
Spring/shock absorbers
Front Coil spring/oil damper
Rear Coil-gas spring/oil damper
Wheel travel
Front 120 mm
Rear 120 mm
Electrical
Ignition system Transistorized coil ignition
(digital)
Charging system
Type A.C. magneto
Standard output 14 V, 310W @ 5,000 r/min
Battery
Type GT9B-4
Voltage, capacity 12 V, 8 Ah
Headlight bulb typeHalogen bulb
Bulb voltage, wattage ×quantity
Headlight 12 V, 60/55 W ×1
12 V, 55 W ×1
5GJ-9-E1 9/4/01 1:27 PM Page 92

8-4
SPECIFICATIONS
8
Tail/brake light 12 V, 5/21 W ×2
Front turn signal light 12 V, 5/21 W ×2
Rear turn signal light 12 V, 21 W ×2
Auxiliary light 12 V, 5 W ×2
License plate light 12 V, 5 W ×1
Meter lighting 12 V, 1.7 W ×3
High beam indicator light 12 V, 1.7 W ×1
Oil change indicator light 12 V, 1.7 W ×1
Turn indicator light 12 V, 3.4 W ×2
V-belt replacement
indicator light 12 V, 1.7 W ×1
Fuses
Main fuse 30 A
Signaling system fuse 15 A
Headlight fuse 15 A
Ignition fuse 10 A
Radiator fan fuse 15 A
Hazard fuse 10 A
Clock fuse 10 A
5GJ-9-E1 9/4/01 1:27 PM Page 93

INDEX
F
Front and rear brake levers ................. 6-25
Front and rear brake pads, checking ... 6-26
Front fork, checking ............................. 6-30
Fuel ..................................................... 3-10
Fuel consumption, tips for reducing ...... 5-3
Fuel gauge ............................................ 3-4
Fuel tank cap ......................................... 3-9
Fuses, replacing .................................. 6-34
H
Handlebar switches ............................... 3-6
Dimmer switch .................................... 3-6
Hazard switch ...................................... 3-6
Pass switch ......................................... 3-6
Engine stop switch .............................. 3-7
Horn switch ......................................... 3-7
Light switch ......................................... 3-7
Turn signal switch ............................... 3-7
Headlight bulb, replacing ..................... 6-35
Helmet holder ...................................... 3-13
I
Identification numbers ........................... 9-1
Ignition circuit cut-off system ............... 3-15
Indicator lights ....................................... 3-2
Oil change indicator light .................... 3-2
High beam indicator light .................... 3-3
Turn signal indicator lights .................. 3-3
V-belt replacement indicator light ....... 3-3
K
Key identification number ...................... 9-1
M
Main switch/steering lock ...................... 3-1
Model label ............................................ 9-2
P
Parking .................................................. 5-4
Part locations ......................................... 2-1
Periodic maintenance and lubrication
chart .................................................... 6-3
Pre-operation check list ......................... 4-1
R
Rider backrest, adjusting ..................... 3-12
S
Safe-riding points .................................. 1-2
Seat ..................................................... 3-11
Self-diagnosis device ............................ 3-5
Sidestand ............................................ 3-14
Spark plugs, checking ........................... 6-9
Specifications ........................................ 8-1
Speedometer unit .................................. 3-3
Start switch ............................................ 3-7
Starting the engine ................................ 5-1
Steering, checking ............................... 6-31
Storage .................................................. 7-4
Storage compartments ........................ 3-14
T
Throttle cable free play, adjusting ....... 6-22
Throttle grip and cable, checking and
lubricating ......................................... 6-29
Tires .................................................... 6-23
A
Acceleration and deceleration ............... 5-2
Air filter element, cleaning ................... 6-19
Anti-theft alarm (optional) ...................... 3-6
B
Battery ................................................. 6-32
Brake fluid level, checking ................... 6-27
Brake fluid, changing ........................... 6-28
Brake lever, front ................................... 3-9
Brake lever, rear .................................... 3-9
Brake levers, lubricating ...................... 6-29
Braking .................................................. 5-3
C
Carburetors, adjusting ......................... 6-21
Care ....................................................... 7-1
Centerstand and sidestand, checking
and lubricating .................................. 6-29
Chain drive oil ...................................... 6-15
Clock ..................................................... 3-5
Conversion table ................................... 8-5
Coolant ................................................ 6-17
Coolant temperature gauge ................... 3-4
Cowlings and panels, removing and
installing .............................................. 6-6
E
Engine break-in ..................................... 5-4
Engine idling speed ............................. 6-21
Engine oil and oil filter cartridge .......... 6-12
5GJ-9-E1 9/4/01 1:27 PM Page 98