PERIODIC MAINTENANCE AND MINOR REPAIR
Owner’s tool kit .......................................................6-1
Periodic maintenance and lubrication chart ............6-3
Removing and installing cowlings and panels ........6-6
Checking the spark plugs........................................6-9
Engine oil and oil filter cartridge ............................6-12
Chain drive oil .......................................................6-16
Coolant..................................................................6-17
Cleaning the air filter element ...............................6-19
Adjusting the carburetors ......................................6-21
Adjusting the engine idling speed .........................6-21
Adjusting the throttle cable free play .....................6-22
Adjusting the valve clearance ...............................6-22
Tires ......................................................................6-23
Cast wheels ..........................................................6-25
Front and rear brake levers...................................6-25
Checking the front and rear brake pads................6-26
Checking the brake fluid level ...............................6-27
Changing the brake fluid .......................................6-28
Checking and lubricating the throttle grip and
cable ...................................................................6-29
Lubricating the front and rear brake levers ...........6-29
Checking and lubricating the
centerstand and sidestand ..................................6-30
Checking the front fork ..........................................6-30Checking the steering ...........................................6-31
Checking the wheel bearings ................................6-32
Battery...................................................................6-32
Replacing the fuses ..............................................6-34
Replacing a headlight bulb....................................6-35
Troubleshooting ....................................................6-36
Troubleshooting charts .........................................6-37
6
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6-35
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
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. Specified fuses:
Main fuse: 30 A
Signaling system fuse: 15 A
Headlight fuse: 15 A
Ignition fuse: 10 A
Radiator fan fuse: 15 A
Clock fuse: 10 A
1
2
EAU03874
Replacing a headlight bulbThis 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. Headlight coupler
2. Headlight bulb cover
2. Unhook the headlight bulb holder
as shown, and then remove the
defective bulb.
a
1
1. Headlight bulb holder
a. Unhook.
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6-36
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
3
4
56
7
8
9
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.
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
TroubleshootingAlthough Yamaha motorcycles
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 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.
5GJ-9-EV 5/26/01 11:04 AM Page 77
High-speed riding
Front 225 kPa (2.25 kg/cm
2, 2.25 bar)
Rear 250 kPa (2.50 kg/cm2, 2.50 bar)
* Total weight of rider, passenger, cargo and accessories
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
SPECIFICATIONS
1
2
3
4
5
6
78
9
8-3
5GJ-9-EV 5/26/01 11:04 AM Page 90
INDEX
F
Front and rear brake levers ...................6-25
Front and rear brake pads, checking.....6-26
Front fork, checking ...............................6-30
Fuel .........................................................3-9
Fuel consumption, tips for reducing ........5-3
Fuel gauge ..............................................3-4
Fuel tank cap ...........................................3-8
Fuses, replacing ....................................6-34
H
Handlebar switches .................................3-6
Pass switch ...........................................3-6
Dimmer switch ......................................3-6
Turn signal switch .................................3-6
Horn switch ...........................................3-6
Engine stop switch ................................3-7
Start switch ...........................................3-7
Headlight bulb, replacing .......................6-35
Helmet holder ........................................3-11
I
Identification numbers .............................9-1
Ignition circuit cut-off system .................3-13
Indicator lights .........................................3-2
Turn signal indicator lights ....................3-3
High beam indicator light ......................3-3
Oil change indicator light ......................3-2
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 .......................3-10
S
Safe-riding points ....................................1-2
Seat .........................................................3-9
Sidestand ..............................................3-12
Self-diagnosis device ..............................3-6
Spark plugs, checking .............................6-9
Specifications ..........................................8-1
Speedometer unit ....................................3-3
Starting the engine ..................................5-1
Starting off ...............................................5-2
Steering, checking .................................6-31
Storage ....................................................7-4
Storage compartments ..........................3-12
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) ........................3-5
B
Battery ...................................................6-32
Brake fluid level, checking .....................6-27
Brake fluid, changing .............................6-28
Brake lever (front)....................................3-7
Brake lever (rear) ....................................3-8
Brake levers, lubricating ........................6-28
Braking ....................................................5-3
C
Carburetors, adjusting ...........................6-21
Care.........................................................7-1
Centerstand and sidestand, checking
and lubricating ....................................6-30
Chain drive oil........................................6-16
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
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