YAMAHA BT1100 2002 Manual PDF

1. Screw (x 2)
2. Cowling
PERIODIC MAINTENANCE AND MINOR REPAIR
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1
1
2
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EAUB0013
Replacing the headlight and
auxiliary light bulb
This motorcycle is equipped with a quartz
bulb headlight. If the headlight bulb or aux-
iliary light bulb burns out, replace it as fol-
lows.
NOTE:
Skip steps 6-10 if only the headlight bulb is
being replaced. Skip steps 2-5 if only the
auxiliary light bulb is being replaced.1. Remove the headlight by removing
the screws, then tilt the cowling for-
ward.
2. Disconnect the headlight coupler and
the auxiliary light leads, and then re-
move the headlight bulb cover.
3. Remove the headlight bulb holder by
turning it counterclockwise, and then
remove the defective bulb.
EW000119WARNING0
Headlight bulbs get very hot. There-
fore, keep flammable products away
from a lit headlight bulb, and do not
touch the bulb until it has cooled down.
4. Place a new bulb into position, and
then secure it with the bulb holder.
EAU00462
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1. Headlight bulb cover
2. Auxiliary light bulb holder1. Headlight coupler

PERIODIC MAINTENANCE AND MINOR REPAIR
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1
2
EC000105
Do not touch the glass part of the head-
light bulb to keep it free from oil, other-
wise the transparency of the glass, the
luminosity of the bulb, and the bulb life
will be adversely affected.
Thoroughly clean off any dirt and fin-
gerprints on the headlight bulb using a
cloth moistened with alcohol or thin-
ner.
CAUTION:5. Install the headlight bulb cover, and
then connect the coupler and auxil-
iary light leads.
6. Remove the socket (together with the
bulb) by turning it counterclockwise.
7. Remove the defective bulb by push-
ing it in and turning it counterclock-
wise.
8. Insert a new bulb into the socket,
push it in, and then turn it clockwise
until it stops.
9. Install the socket (together with the
bulb) by turning it clockwise.10. Connect the auxiliary light bulb leads.
11. Tilt the cowling back to the original
position, and then install the headlight
by installing the screws.
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1. Headlight bulb holder 1. Do not touch this area 1. Auxiliary light bulb holder
2. Auxiliary light bulb

EAU00462
1. Screw
2. Turn signal light len
PERIODIC MAINTENANCE AND MINOR REPAIR
1
2
1. Screw (x 2)
11
NOTE:
Before installing the headlight, be sure to
hook the headlight and auxiliary light bulb
leads into the guide to the left of the head-
light as shown.
12. Have a Yamaha dealer adjust the
headlight beam if necessary.
EAU03497
Replacing a turn signal light
bulb
1. Remove the turn signal light lens by
removing the screw.
2. Remove the defective bulb by push-
ing it in and turning it counterclock-
wise.
3. Insert a new bulb into the socket,
push it in, and then turn it clockwise
until it stops.
4. Install the lens by installing the screw.
EC000065
Do not overtighten the screw, other-
wise the lens may break.
CAUTION:
EAU01623
Replacing the tail/brake light
bulb
1. Remove the tail/brake light lens by re-
moving the screws.
2. Remove the defective bulb by push-
ing it in and turning it counterclock-
wise.
3. Insert a new bulb into the socket,
push it in, and then turn it clockwise
until it stops.
4. Install the lens by installing the
screws.
EC000108
Do not overtighten the screws, other-
wise the lens may break.
CAUTION:
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1
1. Leads guide

EAU00462
1. Nut (x 2) 1. Bulb socket
2. Bulb
PERIODIC MAINTENANCE AND MINOR REPAIR
1
1 2
1. Brake caliper (x 2)
2. Wheel axle pinch bolt
3. Wheel axle
4. Spacer (x 2)








EAUB0019
Replacing the license plate
light bulb
1. Remove the license plate light by re-
moving the nuts.
2. Remove the bulb socket from the li-
cense plate light by pulling it out.
3. Remove the defective bulb by pulling
it out.
4. Insert a new bulb into the socket.
5. Install the bulb socket into the license
plate light.
6. Install the license plate light by in-
stalling the nuts.
EAUB0015
Front wheel
To remove the front wheel
EW000122WARNING0
It is advisable to have a Yamaha dealer
service the wheel.
Securely support the motorcycle so
that there is no danger of it falling over.
1. Mark either side of the wheel so that it
can be installed in the original running
direction.
2. Remove the brake calipers by remov-
ing the bolts.
ECA00047
Do not pull the brake lever after the
brake caliper has been removed, other-
wise the brake pads will be forced shut.
3. Loosen the front wheel axle pinch
bolt, then the wheel axle.
4. Pull the wheel axle out together with
the spacers, and then remove the
wheel.
CAUTION:
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EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
EAB00016
To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Install the spacers and insert the
wheel axle.
3. Lower the front wheel so that it is on
the ground.
4. Install the brake calipers by installing
the bolts.
NOTE:
Make sure that there is enough space
between the brake pads before installing
the brake calipers onto the brake discs.5. Tighten the wheel axle, then the front
wheel axle pinch bolt, and the brake
caliper bolts to the specified torques.EAUB0017
Rear wheel
To remove the rear wheel
EW000122WARNING0
It is advisable to have a Yamaha dealer
service the wheel.
Securely support the motorcycle so
that there is no danger of it falling over.
1. Loosen the rear wheel axle pinch
bolt, and then remove the axle nut.
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6. Push down hard on the handlebar
several times to check for proper fork
operation. Tightening torques:
Wheel axle:
75 Nm (7.5 m·kgf)
Front wheel axle pinch bolt:
25 Nm (2.5 m·kgf)
Brake caliper bolt:
42 Nm (4.2 m·kgf)
1. Wheel axle pinch bolt
2. Axle nut
3. Brake torque rod bolt



EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
2. Remove the brake torque rod bolt
from the brake caliper bracket, and
then turn the caliper up, away from
the disc.
3. Remove the wheel axle together with
the spacers.
4. Pull the wheel to the right to separate
it from the final gear case, and then
remove it.
ECA00062
Do not push the brake pedal after the
wheel has been removed together with
the brake disc, otherwise the brake
pads will be forced shut.
CAUTION:
EAUB0018
To install the rear wheel
1. Apply a light coating of lithium-soap-
based grease to the splines of the fi-
nal gear case and wheel hub.
2. Install the wheel by inserting the
wheel axle, then installing the axle
nut.
3. Turn the caliper down so that it fits
over the brake disc.
NOTE:
Make sure that there is enough space
between the brake pads before installing
the brake caliper onto the brake disc.
4. Install the wheel axle pinch bolt.
5. Install the brake torque rod bolt at the
brake caliper bracket.6. Install the wheel axle pinch bolt.
7. Lower the rear wheel so that it is on
the ground.
8. Tighten the axle nut, wheel axle pinch
bolt, and brake torque rod bolt to the
specified torques.
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Tightening torques:
Axle nut:
110 Nm (11.0 m·kgf)
Wheel axle pinch bolt:
22 Nm (2.2 m·kgf)
Brake torque rod bolt:
35 Nm (3.5 m·kgf)

EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
EAU01008
Troubleshooting
Although Yamaha motorcycles receive a
thorough inspection before shipment from
the factory, trouble may occur during oper-
ation. Any problem in the fuel, compres-
sion, or ignition systems, for example, can
cause poor starting and loss of power.
The following troubleshooting chart repre-
sents a quick and easy procedure for
checking these vital systems yourself.However, should your motorcycle require
any repair, take it to a Yamaha dealer,
whose skilled technicians have the neces-
sary tools, experience, and know-how to
service the motorcycle properly.
Use only genuine Yamaha replacement
parts. Imitation parts may look like Yama-
ha parts, but they are often inferior, have a
shorter service life and can lead to expen-
sive repair bills.
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EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
EAU01297
Troubleshooting chart
EW000125WARNING0
Keep away open flames and do not smoke while checking or working on the fuel system.
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Check the fuel level in the
fuel tank.
1. Fuel
2. Compression
3. Ignition
4. BatteryThere is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.The engine does not start. Check the compression.
There is compression.Check the ignition.
Have a Yamaha dealer check
the vehicle.
Wipe off with a dry cloth and correct the spark
plug gaps, or replace the spark plugs.Open the throttle halfway and operate the
electric starter.
Have a Yamaha dealer check
the vehicle.The engine does not start.
Check the battery.
The engine turns over slowly.
Have a Yamaha dealer check
the vehicle.
There is no compres-
sion.
Wet.
Dry
The engine turns over quickly.The battery is good.
Check the battery lead connections, and
charge the battery if necessary.The engine does not start.
Operate the electric
starter.
Remove the spark plugs
and check the electrodes.
Operate the electric
starter.

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Care ......................................................................................................7-1
Storage ................................................................................................7-4
MOTORCYCLE CARE AND STORAGEEAU03412

MOTORCYCLE CARE AND STORAGE
Care
While the open design of a motorcycle re-
veals the attractiveness of the technology,
it also makes it more vulnerable. Rust and
corrosion can develop even if high-quality
components are used. A rusty exhaust
pipe may go unnoticed on a car, however,
it detracts from the overall appearance of a
motorcycle. Frequent and proper care
does not only comply with the terms of the
warranty, but it will also keep your motor-
cycle looking good, extend its life and opti-
mize its performance.Before cleaning
1. Cover the muffler outlets with plastic
bags after the engine has cooled
down.
2. Make sure that all caps and covers as
well as all electrical couplers and con-
nectors, including the spark plug
caps, are tightly installed.
3. Remove extremely stubborn dirt, like
oil burnt onto the crankcase, with a
degreasing agent and a brush, but
never apply such products onto
seals, gaskets and wheel axles. Al-
ways rinse the dirt and degreaser off
with water.CleaningECA00010
•Avoid using strong acidic wheel
cleaners, especially on spoked
wheels. If such products are used
on hard-to-remove dirt, do not
leave the cleaner on the affected
area any longer than instructed.
Also, thoroughly rinse the area off
with water, immediately dry it, and
then apply a corrosion protection
spray.
•Improper cleaning can damage
windshields, cowlings, panels and
other plastic parts. Use only a soft,
clean cloth or sponge with mild
detergent and water to clean plas-
tic.
CAUTION:
EAU03412
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