Page 18 of 432

Adjusting the rear brake light switch. 8-103
Cable inspection and lubrication ..... 8-105
Brake lever and brake pedal
lubrication ...................................... 8-107
Wheel removal ................................ 8-109
Wheel installation ............................. 8-111
Battery ............................................. 8-113
Battery maintenance ....................... 8-117
Fuse replacement ............................ 8-119
Replacing the headlight bulb ........... 8-123
Headlight beam adjustment ............. 8-127
Tail/brake light bulb replacement ..... 8-129
Troubleshooting ............................... 8-133
Troubleshooting chart ...................... 8-135
CLEANING AND STORAGE .................. 9-1
A. Cleaning .......................................... 9-1
B. Storage ........................................... 9-7
SPECIFICATIONS ................................ 10-1
HOW TO USE THE CONVERSION
TABLE ................................................... 11-1
91011U5GH62.book Page 3 Monday, August 6, 2001 9:09 AM
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4-15 1. Light switch “LIGHTS”
2. Engine stop switch “”/“”
3. Start switch “”
4. Horn switch “”
1. Contacteur d’éclairage “LIGHTS”
2. Coupe-circuit du moteur “”/“”
3. Contacteur du démarreur “”
4. Contacteur de l’avertisseur “”
1. Interruptor de luces “LIGHTS”
2. Interruptor de paro del motor “”/“”
3. Interruptor de arranque “”
4. Interruptor de la bocina “”
EBU00053
Handlebar switches
EBU00735*
Light switch
Turn the switch to the “” position to switch on
the low beam and the taillight.
Turn the switch to the “” position to switch on
the high beam and the taillight.
Turn the switch to the “OFF” position to switch off
the headlights and the taillight.CAUTION:
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 re-
charge it.
EBU00849
Engine stop switch “”/“”
Make sure that the engine stop switch is in the
“” position. The engine stop switch controls ig-
nition and can be used at all times to stop the en-
gine, especially in an emergency. The engine will
not start or run when the engine stop switch is
turned to “”.
U5GH62.book Page 15 Monday, August 6, 2001 9:09 AM
Page 114 of 432
4-51
CAUTION:
Do not use accessories requiring more
than the above maximum capacity. This
may overload the circuit and cause the
fuse to blow.
If accessories are used without the engine
running or with the headlights turned on,
the battery will lose its charge and engine
starting may become difficult.
Do not use an automotive cigarette lighter
or other accessories with a plug that gets
hot because the jack can be damaged.
U5GH62.book Page 51 Monday, August 6, 2001 9:09 AM
Page 154 of 432

6-7 a. Starter (choke) lever
1. Fully open
2. Half open
3. Closed
a. Starter (enrichisseur)
1. Complètement ouvert
2. Mi-ouvert
3. Fermé
a. Arrancador (choke)
1. Abre completamente
2. Semiabierto
3. Cerrado
NOTE:
If the engine fails to start, release the start
switch, then push the start switch again.
Pause a few seconds before the next attempt.
Each cranking should be as short as possible
to preserve battery energy. Do not crank the
engine more than 10 seconds on each at-
tempt.
If the battery is discharged, pull the recoil
starter to start the engine.
7. If the engine is started with the starter (choke)
in position
1, the starter (choke) should be
returned to position
2 to warm up the en-
gine. If the engine is started with the starter
(choke) in position
2, keep the starter
(choke) in this position to warm up the en-
gine.
8. Continue warming up the engine until it idles
smoothly and return the starter (choke) to po-
sition
3 before riding.CAUTION:
See the “Engine break-in” section prior to op-
erating the engine for the first time.
U5GH62.book Page 7 Monday, August 6, 2001 9:09 AM
Page 372 of 432
8-113
EBU00381
Battery
This machine is equipped with a sealed-type bat-
tery. Therefore it is not necessary to check the
electrolyte or add distilled water in the battery. If
the battery seems to have discharged, consult a
Yamaha dealer.CAUTION:
Do not try to remove the sealing caps of the
battery cells. You may damage the battery.
U5GH62.book Page 113 Monday, August 6, 2001 9:09 AM
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8-115
WARNING
Battery electrolyte is poisonous and danger-
ous, causing severe burns, etc. It contains sul-
furic acid. Avoid contact with skin, eyes or
clothing.
Antidote:
EXTERNAL: Flush with water.
lNTERNAL: Drink large quantities of water
or milk. Follow with milk of magnesia, beat-
en egg or vegetable oil. Call a physician
immediately.
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 us-
ing in an enclosed space. Always shield your
eyes when working near batteries.
KEEP OUT OF REACH OF CHILDREN.
U5GH62.book Page 115 Monday, August 6, 2001 9:09 AM
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8-117
EBU00385
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.CAUTION:
A special battery charger (constant voltage/
ampere or constant voltage) is required for re-
charging a sealed-type battery. Using a con-
ventional battery charger may shorten the
battery life.2. Always make sure the connections are cor-
rect when putting the battery back in the ma-
chine.
U5GH62.book Page 117 Monday, August 6, 2001 9:09 AM
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8-135
EBU00724Troubleshooting chart
Starting problems or poor engine performance1. Fuel
Check if there is fuel
in the fuel tank.There is fuel.Turn the fuel cock
lever to “OFF”.No fuel.Fuel cock is
clogged.
Clean the
fuel cock. Some fuel.Turn the fuel cock
lever to “RES”.Restart the engine.
No fuel.Supply fuel.
2. Compression
Use the electric
starter to see if
there is compression.There is compression.
Compression normal.
No compression.Ask a Yamaha dealer to
inspect.
3. Ignition
Remove the
spark plug and
check electrodes.WetWipe clean with dry cloth.
DryAttach spark plug cap and
ground to chassis.Use the
electric starter.Spark is good.Ignition system is
normal.
Spark is weak.
Adjust the spark plug gap
or replace the spark plug. No spark.
Ask a Yamaha dealer to
inspect. 4. Battery
Use the electric starter.Engine turns over
quickly.Battery is good.
Engine turns over
slowly.Check the connections.Check the
fuel flow.
Turn the fuel cock
lever to “ON”.
Remove the fuel hose
from the fuel cock.
U5GH62.book Page 135 Monday, August 6, 2001 9:09 AM