YAMAHA TDM 900 2002 Manual Online

PERIODIC MAINTENANCE AND MINOR REPAIR
6-36
6
EC000105
CAUTION:_ Do 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 af-
fected. Thoroughly clean off any dirt
and fingerprints on the headlight
bulb using a cloth moistened with
alcohol or thinner. _4. Install the headlight bulb cover,
and then connect the coupler.
5. Have a Yamaha dealer adjust the
headlight beam if necessary.
EAU04411
Replacing a tail/brake light
bulb 1. Remove the seat. (See page 3-11
for seat removal and installation
procedures.)
2. Remove the socket (together with
the bulb) by turning it counter-
clockwise.
3. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.
4. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.5. Install the socket (together with
the bulb) by turning it clockwise.
6. Install the seat.
1. Do not touch this area.
1. Socket
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-37
6
EAU03497
Replacing a turn signal light
bulb 1. Remove the turn signal light lens
by removing the screw.
2. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.3. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the
screw.
ECA00065
CAUTION:@ Do not overtighten the screw, other-
wise the lens may break. @
EAU01579
Supporting the motorcycle Since this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear
wheel or performing other mainte-
nance requiring the motorcycle to
stand upright. Check that the motor-
cycle is in a stable and level position
before starting any maintenance. A
strong wooden box can be placed un-
der the engine for added stability.
To service the front wheel
1. Stabilize the rear of the motorcycle
by using a motorcycle stand or, if
an additional motorcycle stand is
not available, by placing a jack un-
der the frame in front of the rear
wheel.
2. Raise the front wheel off the
ground by using a motorcycle
stand.
1. Screw
2. Turn signal light lens
1. Turn signal light bulb
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-38
6 To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a motor-
cycle stand is not available, by placing
a jack either under each side of the
frame in front of the rear wheel or under
each side of the swingarm.
EAU01617
Front wheel To remove the front wheel
EW000122
WARNING
_

It is advisable to have a Yamaha
dealer service the wheel.


Securely support the motor-
cycle so that there is no danger
of it falling over.
_1. Loosen the front wheel axle pinch
bolt, then the brake caliper bolts.
2. Loosen the wheel axle with a 19-mm
hexagon wrench.3. Lift the front wheel off the ground
according to the procedure on
page 6-37.
4. Remove the brake hose holders
by removing the bolts.
5. Remove the brake calipers by re-
moving the bolts.
6. Pull the wheel axle out, and then
remove the wheel.
ECA00046
CAUTION:_ Do not apply the brake after the
brake calipers have been removed,
otherwise the brake pads will be
forced shut. _
1. Wheel axle
2. Front wheel axle pinch bolt
1. Bolt (× 2)
2. Brake caliper
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-39
6
EAU04376
To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Insert the wheel axle.
3. Lower the front wheel so that it is
on the ground.
4. Install the brake calipers by install-
ing the bolts.NOTE:_ Make sure that there is enough space
between the brake pads before install-
ing the brake calipers onto the brake
discs. _5. Install the brake hose holders by
installing the bolts.
6. Tighten the wheel axle, the front
wheel axle pinch bolt and the
brake caliper bolts to the specified
torques.7. Push down hard on the handlebar
several times to check for proper
fork operation.
EAU04455
Rear wheel To remove the rear wheel
EW000122
WARNING
_

It is advisable to have a Yamaha
dealer service the wheel.


Securely support the motor-
cycle so that there is no danger
of it falling over.
_
Tightening torques:
Wheel axle:
72 Nm (7.2 m·kgf)
Front wheel axle pinch bolt:
20 Nm (2.0 m·kgf)
Brake caliper bolt:
40 Nm (4.0 m·kgf)
1. Bolt (× 2)
2. Quick fastener (× 3)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-40
6 1. Remove the drive chain cover by
removing the quick fasteners and
the bolts.2. Loosen the axle nut and the brake
caliper bracket bolt.
3. Lift the rear wheel off the ground
according to the procedure on
page 6-39.4. Remove the axle nut.
5. Loosen the locknut on each side of
the swingarm.
6. Turn the drive chain slack adjust-
ing bolts fully in direction
a.
7. Push the wheel forward, tighten
the caliper bracket bolt and then
remove the drive chain from the
rear sprocket.
NOTE:_ The drive chain does not need to be
disassembled in order to remove and
install the rear wheel. _
1. Quick fastener
2. Pin
After removal
Before installation
1. Axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
1. Bolt
2. Brake caliper bracket
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-41
68. Pull the wheel axle out, and then
remove the wheel.
ECA00119
CAUTION:_ Do not apply the brake after the
wheel has been removed together
with the brake disc, otherwise the
brake caliper pistons will be forced
out. _
EAU04456
To install the rear wheel
1. Install the wheel by inserting the
wheel axle from the right hand
side.NOTE:_ Make sure that there is enough space
between the brake pads before install-
ing the wheel. _2. Install the drive chain onto the rear
sprocket.
3. Loosen the brake caliper bracket
bolt.
4. Adjust the drive chain slack. (See
page 6-27 for drive chain slack ad-
justment procedures.)
5. Install the axle nut, and then lower
the rear wheel so that it is on the
ground.
6. Tighten the axle nut and the brake
caliper bracket bolt to the specified
torques.7. Install the drive chain cover by in-
stalling the bolts and quick fasten-
ers.
NOTE:_ To install a quick fastener, push the pin
back so that it will protrude from the
fastener head, and then insert the fas-
tener and push the protruding pin in un-
til it is flush with the fastener head. _
Tightening torques:
Axle nut:
150 Nm (15.0 m·kgf)
Brake caliper bracket bolt:
40 Nm (4.0 m·kgf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-42
6
EAU03087
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing 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 motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
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.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-43
6
EAU02990
Troubleshooting charts Starting problems or poor engine performance
EW000125
WARNING
@ Keep away open flames and do not smoke while checking or working on the fuel system. @
CT-1AE
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plugs
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-44
6 Engine overheating
EW000070
WARNING
@

Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.


After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hiss-
ing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
_CT-2AENOTE:@ If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant
as soon as possible. @
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
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