light YAMAHA TW200 1998 User Guide

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.
EW000110
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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.
EW000103
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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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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.
EW000119
w
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
cC
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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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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7-2
CLEANING AND STORAGE
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96. Rinse the motorcycle off
immediately with clean water
and dry all surfaces with a
chamois, clean towel, or soft
absorbent cloth.
7. Dry the chain and lubricate it
to prevent rust.
8. Clean the seat with a vinyl
upholstery cleaner to keep the
cover pliable and glossy.
9. Automotive-type wax may be
applied to all painted and
chrome-plated surfaces. Avoid
combination cleaner-waxes.
Many contain abrasives which
may mar the paint or protec-
tive finish. When finished, start
the engine and let it idle for
several minutes.
EAU01107B. STORAGE
Long term storage (60 days or
more) of your motorcycle will
require some preventive proce-
dures to guard against deteriora-
tion. After thoroughly cleaning the
motorcycle, prepare for storage as
follows:
1. Fill the fuel tank with fuel and
add fuel stabilizer (if available).
2. Remove the spark plug, pour
about one tablespoon of SAE
10W30 or 20W40 motor oil in
the spark plug hole and rein-
stall the spark plug. Turn the
engine over several times
(ground spark plug lead) to
coat the cylinder wall with oil.
EW000127
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When using the starter motor to
crank the engine, remove the
spark plug wires, and ground them
to prevent sparking.
3. Thoroughly clean and lubricate
the drive chain. (For details,
see “Drive chain lubrication”
on page 6-23.)
4. Lubricate all control cables.
5. Block up the frame to raise
both wheels off the ground.
6. Tie a plastic bag over the
exhaust pipe outlet 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 or more than
30°C.
NOTE:
Make any necessary repairs before
storing the motorcycle.
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8-3
SPECIFICATIONS
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Wheels:
Type:
Front Spoke wheel
Rear Spoke wheel
Size:
Front 18 ×2.50
Rear 14M/C ×MT4.50
Brakes:
Front:
Type Drum brake
Operation Right hand operation
Rear:
Type Drum brake
Operation Right foot operation
Suspension:
Front Telescopic fork
Rear Swingarm
(Monocross suspension)
Shock absorber:
Front Coil spring / oil damper
Rear Coil-gas spring / oil damper
Wheel travel:
Front 160 mm
Rear 150 mmElectrical:
Ignition system: C.D.I.
Charging system:
Type A.C. magneto
Standard output 12V 11A / 5,000 rpm
Battery:
Type GM7CZ-3D
Voltage, capacity 12V 7 AH
Headlight typeHalogen bulb
Bulb voltage, wattage ×quantity:
Headlight 12V 35W / 35W ×1
Stop / tail light 12V 27W / 8W ×1
Front flasher light 12V 27W / 8W ×2
Rear flasher light 12V 27W ×2
Meter light 12V 3.4W ×1
Neutral indicator light 12V 3.4W ×1
High beam indicator light 12V 3.4W ×1
Turn indicator light 12V 3.4W ×1
Fuse:
Main 15A
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