2002 YAMAHA TW200 light

5-3
OPERATION AND IMPORTANT RIDING POINTS
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91. Turn the fuel cock to “ON”.
2. Turn the main switch to ON”
and the engine stop switch to
“RUN”.
3. Shift transmission into neutral.
NOTE:
When the transmission is in neu-
tral, the neutral indicator light
should be on. If the light does not
come on, ask a Yamaha dealer to
inspect it.
4. Turn on the starter and com-
pletely close the throttle grip.
5. Start the engine by pushing
the start switch or by kicking
the kick starter.
NOTE:
If the engine fails to start, release
the start switch, wait a few sec-
onds, then try again. Each attempt
should be as short as possible to
preserve the battery. Do not crank
the engine more than 10 seconds
on any one attempt. If the engine
does not start with the starter
motor, kick the kick starter to start
the engine.
6. After starting the engine, move
the starter to the halfway posi-
tion.
NOTE:
For maximum engine life, always
warm up the engine before starting
off. Never accelerate hard with a
cold engine.
7. After warming up the engine,
turn off the starter completely.
NOTE:
The engine is warm when it
responds normally to the throttle
with the starter turned off.
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5-4
OPERATION AND IMPORTANT RIDING POINTS
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EAU00423
Shifting
The transmission lets you control
the amount of power you have
available at a given speed for start-
ing, accelerating, climbing hills,
etc. The use of the shift pedal is
shown in the illustration.
To shift into neutral, depress the
shift pedal repeatedly until it reach-
es the end of its travel, then raise
the pedal slightly.
EC000048
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1. Do not coast for long periods
with the engine off, and do
not tow the motorcycle a long
distance. Even with gears in
neutral, the transmission is
only properly lubricated when
the engine is running.
Inadequate lubrication may
damage the transmission.
2. Always use the clutch when
changing gears. The engine,
transmission, and driveline are
not designed to withstand the
shock of forced shifting and
can be damaged by shifting
without using the clutch.
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N5
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N. Neutral
1. Shift pedal
EAU01258Starting a warm engine
The starter (choke) is not required
when the engine is warm.
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See the “Engine break-in” section
prior to operating the motorcycle
for the first time.
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6-7
PERIODIC MAINTENANCE AND MINOR REPAIR
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1. Panel A
EAU00494Panel A
To remove:
Pull outward on the areas shown.
To install:
Place the panel in its original posi-
tion.
1
EAU00495Spark plug inspection
The spark plug is an important
engine component and is easy to
inspect. The condition of the spark
plug can indicate the condition of
the engine. The ideal color on the
white insulator around the center
electrode is a medium-to-light tan
color for a motorcycle that is being
ridden normally. Do not attempt to
diagnose any problems yourself.
Instead, take the motorcycle to a
Yamaha dealer. You should period-
ically remove and inspect the spark
plug because heat and deposits
will cause the spark plug to slowly
1. Spark plug gap
12
1. Panel B
2. Screw (×2)
EAU01345Panel B
To remove:
Remove the screws and pull out-
ward on the areas shown.
To install:
Place the panel in the original posi-
tion and install the screws.
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6-8
PERIODIC MAINTENANCE AND MINOR REPAIR
6 break down and erode. If electrode
erosion becomes excessive, or if
carbon and other deposits are
excessive, you should replace the
spark plug with the specified plug.
Before installing the spark plug,
measure the electrode gap with a
wire thickness gauge; adjust the
gap to specification as necessary.
When installing the plug, always
clean the gasket surface and use a
new gasket. Wipe off any grime
from the threads and tighten the
spark plug to the specified torque.Specified spark plug:
DR8EA (NGK) or
X24ESR-U (DENSO)Spark plug gap:
0.6 ~ 0.7 mm
Tightening torque:
Spark plug:
17.5 Nm (1.75 m0kg)
NOTE:
If a torque wrench is not available
when you are installing a spark
plug, a good estimate of the cor-
rect torque is 1/4 to 1/2 turn past
finger tight. Have the spark plug
tightened to the specified torque as
soon as possible.EAU00517Engine oil
1. Oil level measurement
a. Place the motorcycle on a level
place and hold it in an upright
position. Warm up the engine
for several minutes.
NOTE:
Be sure the motorcycle is posi-
tioned straight up when checking
the oil level. A slight tilt toward the
side can result in false readings.
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6-20
PERIODIC MAINTENANCE AND MINOR REPAIR
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b1
2a
EAU00713
Brake light switch
adjustment
The rear brake light switch is acti-
vated by the brake pedal and is
properly adjusted when the brake
light comes on just before braking
takes effect. To adjust the rear
brake light switch, hold the switch
body so it does not rotate while
turning the adjusting nut.
Turn the adjusting nut in direction
ato make the brake light come on
earlier.
Turn the adjusting nut in direction
bto make the brake light come on
later.
1. Brake light switch
2. Adjusting nut
EW000106
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8Brake pedal free play should
be checked whenever the
chain is adjusted or the rear
wheel is removed and then
reinstalled.
8Check the operation of the
brake light after adjusting the
rear brake.
8If it is impossible to make
proper adjustment, consult a
Yamaha dealer.
2. Free play
The rear brake pedal free play
should be adjusted to 20 ~ 30
mm at the brake pedal end.
Turn the adjusting nut on the
brake rod in direction ato
increase free play or in direc-
tion bto decrease free play.
a
b1
1. Adjusting nut
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6-23
PERIODIC MAINTENANCE AND MINOR REPAIR
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6. Insert a new cotter pin into the
axle nut and bend the end of
the cotter pin as shown in the
illustration. If the notch in the
nut and cotter pin hole do not
match, tighten the nut slightly
to align them.
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Always use a new cotter pin on
the axle nut.
1. Cotter pin
7. Adjust the free play in the
brake pedal.
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Check the operation of the brake
light after adjusting the rear brake.
EAU01106Drive chain lubrication
The chain consists of many parts
which work with each other. If the
chain is not maintained properly, it
will wear out quickly. Therefore,
the chain must be serviced regular-
ly. This service is especially neces-
sary when riding in dusty areas.
1. The drive chain should be
lubricated every 500 km. First,
remove all dirt and mud from
the chain with a brush or cloth.
Then, spray any of the many
brands of spray-type chain
lubricant between both rows
of side plates and on all center
rollers.
2. To clean the chain thoroughly,
remove it from the motorcycle,
dip it in solvent, and clean out
as much dirt as possible. Then,
take the chain out of the sol-
vent to dry it, and immediately
lubricate it to prevent it from
rusting.
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6-30
PERIODIC MAINTENANCE AND MINOR REPAIR
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3. Remove the connector and the
bulb holder cover.
4. Turn the bulb holder counter-
clockwise to remove it and
remove the defective bulb.
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Keep flammable products and your
hands away from a bulb while it is
on, as it is hot. Do not touch a bulb
until it cools down.
5. Put a new bulb into position
and secure it in place with the
bulb holder.
1. Bulb holder cover
EAU01191
Headlight bulb replacement
This motorcycle is equipped with a
quartz bulb headlight. If the head-
light bulb burns out, replace it as
follows:
1. Remove cowling A. (See page
6-6 for cowling removal and
installation procedures.)
2. Remove the headlight unit.
1
EC000105
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Avoid touching the glass part of a
bulb. Keep it free from oil; other-
wise, the transparency of the
glass, life of the bulb, and lumi-
nous flux will be adversely affect-
ed. If oil gets on a bulb, thoroughly
clean it with a cloth moistened
with alcohol or lacquer thinner.
6. Install the bulb holder cover,
connector and headlight unit.
7. Install the cowling.
8. If the headlight beam adjust-
ment is necessary, ask a
Yamaha dealer to make that
adjustment.
1. Bulb holder
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6-34
PERIODIC MAINTENANCE AND MINOR REPAIR
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EW000110
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Always use a new cotter pin on
the axle nut.
5. Insert the brake rod into the
brake cam lever and install the
brake pedal free play adjusting
nut.
6. Adjust the rear brake pedal
free play. (See page 6-19.)
EW000103
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Check the operation of the brake
light after adjusting the rear brake.
EAU01008Troubleshooting
Although Yamaha motorcycles
receive a rigid inspection before
shipment from the factory, trouble
may occur during operation.
Any problem in the fuel, compres-
sion, or ignition systems can cause
poor starting and loss of power.
The troubleshooting chart
describes a quick, easy procedure
for making checks.
If your motorcycle requires any
repair, bring it to a Yamaha dealer.
The skilled technicians at a
Yamaha dealership have the tools,
experience, and know-how to
properly service your motorcycle.
Use only genuine Yamaha parts on
your motorcycle. Imitation parts
may look like Yamaha parts, but
they are often inferior.
Consequently, they have a shorter
service life and can lead to expen-
sive repair bills.
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