Page 16 of 424

Idle speed adjustment ...................... 8-65
Valve clearance adjustment ............. 8-67
Throttle lever adjustment .................. 8-69
Front and rear brake pad
inspection ....................................... 8-71
Brake fluid level inspection ............... 8-73
Brake fluid replacement .................... 8-77
Front brake lever free play ............... 8-79
Brake pedal height adjustment ......... 8-81
Parking brake adjustment ................. 8-83
Adjusting the rear brake light switch . 8-87
Clutch lever free play adjustment ..... 8-89
Drive chain slack check .................... 8-91
Adjusting the drive chain slack ......... 8-93
Lubricating the drive chain ............... 8-97
Cable inspection and lubrication .... 8-101
Brake and shift pedal/brake and
clutch lever lubrication .................. 8-103
Front upper and lower arm pivot
lubrication ..................................... 8-105
Rear arm pivot lubrication .............. 8-107Wheel removal ............................... 8-111
Wheel installation ........................... 8-113
Battery ............................................ 8-115
Battery maintenance ...................... 8-119
Fuse replacement ........................... 8-121
Replacing a headlight bulb ............. 8-125
Headlight beam adjustment ............ 8-131
Tail/brake light ................................ 8-131
Troubleshooting .............................. 8-133
Troubleshooting chart ..................... 8-137
CLEANING AND STORAGE ................ 9-1
A. CLEANING ..................................... 9-1
B. STORAGE ..................................... 9-7
SPECIFICATIONS .............................. 10-1
Conversion table ................................. 11-1
9
10
11
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4-9
1
2
3
1. Light switch “LIGHTS”
2. Engine stop switch “ENG. STOP”
3. Start switch “START”
1. Contacteur d’éclairage “LIGHTS”
2. Coupe-circuit du moteur “ENG. STOP”
3. Contacteur du démarreur “START”
1. Interruptor de luces “LIGHTS”
2. Interruptor de paro del motor “ENG. STOP”
3. Interruptor de arranque “START”
EBU00530
Handlebar switches
EBU11560
Light switch “LIGHTS”
Set the switch to the “LO” position to turn on the
low beam and the taillight.
Set the switch to the “HI” position to turn on the
high beam and the taillight.
Set the switch to the “OFF” position to turn off all
of the lights.
cC
Do not use the headlights with the engine
turned off for more than thirty minutes. The
battery may discharge to the point that the
starter motor will not operate properly. If this
should happen, remove the battery and
recharge it.
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6-7
4. Completely close the throttle lever and
start the engine by pushing the start
switch.
NOTE:
If the engine fails to start, release the start
switch, then push it again. Pause a few seconds
before the next attempt. Each cranking should
be as short as possible to preserve battery ener-
gy. Do not crank the engine more than 10 sec-
onds on each attempt.
5. Continue warming up the engine until it
idles smoothly.
cC
See the “Engine break-in” section prior to
operating engine for the first time.
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8-115
EBU03810
Battery
This machine is equipped with a sealed-type
battery. Therefore it is not necessary to check
the electrolyte or add distilled water in the bat-
tery. If the battery seems to have discharged,
consult a Yamaha dealer.
cC
Do not try to remove the sealing caps of the
battery cells. You may damage the battery.
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8-117
w
Battery electrolyte is poisonous and danger-
ous, causing severe burns, etc. It contains
sulfuric acid. Avoid contact with skin, eyes
or clothing.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten
egg or vegetable oil. Call a physician imme-
diately.
EYES: Flush with water for 15 minutes and
get prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes or other sources of
ignition away. Ventilate when charging or
using in an enclosed space. Always shield
your eyes when working near batteries.
KEEP OUT OF REACH OF CHILDREN.
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8-119
EBU03850
Battery maintenance
1. When the machine is not used for a month
or longer, remove the battery and store it in
a cool, dark place. Completely recharge
the battery before reinstallation.
cC
A special battery charger (constant
voltage/ampere or constant voltage) is
required for recharging a sealed-type bat-
tery. Using a conventional battery charger
may shorten the battery life.
2. Always make sure the connections are cor-
rect when putting the battery back in the
machine.
2
1
1. Battery positive lead 2. Battery negative lead1. Câble positif de batterie 2. Câble négatif de batterie1. Cable positivo de la batería 2. Cable negativo de la batería
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8-137
EBU15871
Troubleshooting charts
Starting problems or poor engine performance
1. Fuel
Check the fuel
level in the fuel
tank.
2. Compression
Use the electric
starter to see if there
is compression
3. Ignition
Remove the spark plug
and check the electrodes.
WetWipe clean with
dry cloth
DryAttach spark plug cap
and ground to chassis.Use the electric
starterSpark weak
Spark goodIgnition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust the spark plug gap
or replace the spark plug.
There is compressonCompression normal
Ask a Yamaha dealer to inspectNo compression
There is enough fuel.Check the compression.
Supply fuel.There is no fuel.The engine does not start.
Check the compression.
4. Battery
Use the electric
starter
Engine turns over
quickly.Battery is good.
Check the connections.Engine turns over
slowly
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9-9
4. Lubricate all control cables.
5. Block up the frame to raise all wheels off
the ground.
6. Tie a plastic bag over the exhaust pipe out-
let to prevent moisture from entering.
7. If storing in a humid or salt-air atmosphere,
coat all exposed metal surfaces with a light
film of oil. Do not apply oil to any rubber
parts or the seat cover.
8. Remove the battery and charge it. Store it
in a dry place and recharge it once a
month. Do not store the battery in an
excessively warm or cold place (less than
0 °C (30 °F) or more than 30 °C (90 °F)).
NOTE:
Make any necessary repairs before storing the
machine.
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