2002 YAMAHA BT1100 warning light

OPERATION AND IMPORTANT RIDING POINTS
1
b
a
4. Start the engine by pushing the start
switch.
NOTE:
If the engine fails to start, release the start
switch, wait a few seconds, and then try
again. Each starting attempt should be as
short as possible to preserve the battery.
Do not crank the engine more than 10 sec-
onds on any one attempt.
1. Starter (choke) lever
a. Starter (choke) turned on
b. Starter (choke) turned off
EC000038
The oil level warning light and fuel lev-
el warning light should come on when
the start switch is pushed, and they
should go off when the start switch is
released.
If the oil level warning light flickers or
remains on after starting, immediately
stop the engine, and then check the
engine oil level and the vehicle for oil
leakage. If necessary, add engine oil,
and then check the warning light again.
If the warning light does not come on
when pushing the start switch, or if it
does not go off after starting with suffi-
cient engine oil, have a Yamaha dealer
check the electrical circuit.
If the fuel level warning light remains
on after starting, stop the engine, and
then check the fuel level. If necessary,
refuel as soon as possible, and then
check the warning light again. If the
warning light does not come on when
pushing the start switch, or if it does
not go off after starting with sufficient
fuel, have a Yamaha dealer check the
electrical circuit.
CAUTION:5. After starting the engine, move the
starter (choke) knob/lever back
halfway.
ECA00045
For maximum engine life, never accel-
erate hard when the engine is cold!
6. When the engine is warm, turn the
starter (choke) off.
NOTE:
The engine is warm when it responds nor-
mally to the throttle with the starter (choke)
turned off.
CAUTION:
EAU00372
5-2
5

EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
EC000072
•In order to prevent clutch slippage
(since the engine oil also lubri-
cates the clutch), do not mix any
chemical additives with the oil or
use oils of a higher grade than
“CD”. In addition, do not use oils
labeled "ENERGY CONSERVING II"
or higher.
•Make sure that no foreign material
enters the crankcase.
CAUTION:6. Start the engine, and then let it idle for
several minutes while checking it for
oil leakage. If oil is leaking, immedi-
ately turn the engine off and check for
the cause.
NOTE:
After the engine is started, the engine oil
level warning light should go off if the oil
level is sufficient.
EC000067
If the oil level warning light flickers or
remains on, immediately turn the
engine off and have a Yamaha dealer
check the vehicle.
7. Turn the engine off, and then check
the oil level and correct it if neces-
sary.
NOTE:
Have a Yamaha dealer replace the oil filter
element when necessary.
CAUTION:
1. Engine oil drain bolt
6-8
6
1
4. Install the engine oil drain bolt, and
then tighten it to the specified torque.
5. Add the specified amount of the rec-
ommended engine oil, and then in-
stall and tighten the oil filler cap. Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf)
Recommended engine oil:
See page 8-1.
Oil quantity:
Without oil filter element
replacement:
3.0 L
With oil filter element
replacement:
3.1 L
Total amount (dry engine):
3.6 L

EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
3
1 2
To check the final gear oil level
1. Place the motorcycle on a level sur-
face and hold it in an upright position.
NOTE:
•The final gear oil level must be
checked on a cold engine.
•Make sure that the motorcycle is posi-
tioned straight up when checking the
oil level. A slight tilt to the side can
result in a false reading.2. Remove the oil filler bolt, and then
check the oil level in the final gear
case.
NOTE:
The oil level should be at the brim of the
filler hole.
3. If the oil is below the brim of the filler
hole, add sufficient oil of the recom-
mended type to raise it to the correct
level.
To change the final gear oil
1. Place an oil pan under the final gear
case to collect the used oil.
2. Remove the oil filler bolt and drain
bolt to drain the oil from the final gear
case.
6-9
6
1. Final gear oil drain bolt
2. Final gear oil filler bolt
3. Oil level
EAU04083
Final gear oil
The final gear case must be checked for oil
leakage before each ride. If any leakage is
found, have a Yamaha dealer check and
repair the motorcycle. In addition, the final
gear oil level must be checked and the oil
changed as follows at the intervals speci-
fied in the periodic maintenance and lubri-
cation chart.
EW000066WARNING0
•Make sure that no foreign material
enters the final gear case.
• Make sure that no oil gets on the
tire or wheel.

PERIODIC MAINTENANCE AND MINOR REPAIR
23
1
5. Remove the air filter case cover by
removing the screws.
6. Pull the air filter element out.
7. Lightly tap the air filter element to re-
move most of the dust and dirt, and
then blow the remaining dirt out with
compressed air as shown. If the air fil-
ter element is damaged, replace it.
8. Insert the air filter element into the air
filter case.
1. Screw
2. Air filter case cover
3. Air filter
ECA00089
The engine should never be operated
without the air filter element installed,
otherwise the piston(s) and/or cylin-
der(s) may become excessively worn.
9. Install the air filter case cover by in-
stalling the screws.
10. Install the fuel tank by installing the
bolts.
11. Install the panels.
CAUTION:
EAU00462
6-11
6
4. Lift the fuel tank to position it away
from the air filter case. (Do not dis-
connect the fuel hoses!).
EW000071WARNING0
Make sure that the fuel tank is well sup-
ported.
Do not tilt or pull the fuel tank too much,
otherwise the fuel hoses may come
loose, which could cause fuel leakage.

1. Screw (x 2)
2. Cowling
PERIODIC MAINTENANCE AND MINOR REPAIR
2
1
1
2
1
1
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
6-29
6
1. Headlight bulb cover
2. Auxiliary light bulb holder1. Headlight coupler

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:
6-32
6

SPECIFICATIONS
8-4
8
EAU01038
Battery
Model GT14B-4
Voltage, capacity 12 V, 12 Ah
Headlight typeQuartz bulb (halogen)
Bulb voltage, wattage x quantity
Headlight 12 V 60 W / 55 W x 1
Auxiliary light 12 V 5 W x 1
Tail/brake light 12 V 5 W / 21 W
Turn signal indicator light 12 V 10 W x 4
Meter lighting 14 V - 1.2 W x 4
Oil level warning light LED x 1
Neutral indicator light LED x 1
Turn signal light LED x 1
High beam indicator light LED x 1
Fuel level warning light LED x 1
Fuses
Main fuse 30 A
Backup fuse (odometer) 5 A
Ignition fuse 10 A
Headlight fuse 15 A
Carburetor heater fuse 15 A
Signaling system fuse 10 A

INDEX
A
Air filter element, cleaning ....................6-10
Anti-theft alarm (optional) ......................3-8
Auxiliary light bulb, replacing ................6-29
B
Battery ..................................................6-26
Brake and clutch levers, checking
and Lubricating ..................................6-23
Brake and shift pedals, checking
and Lubricating ..................................6-23
Brake fluid, changing ............................6-21
Brake fluid level, checking ....................6-19
Brake lever ..........................................3-10
Brake pads, checking ..........................6-19
Brake pedal ..........................................3-10
Brake pedal position, adjusting ............6-18
C
Cables, checking and lubricating..........6-22
Carburetors, adjusting ..........................6-12
Care ........................................................7-1
Clock ......................................................3-5
Clutch lever ............................................3-9
Clutch lever free play, adjusting ..........6-17
Consumer information ............................9-1
Controls ..................................................2-3
Conversion table ....................................8-5
D
Description ..............................................2-1
Controls and instrument ......................2-3Left view ..............................................2-1
Right view ............................................2-2
E
Engine break-in ......................................5-4
Engine idling speed, adjusting..............6-12
Engine oil and oil filter element ..............6-7
Engine stop switch..................................3-9
F
Final gear oil ..........................................6-9
Front fork
Adjusting ............................................3-15
Checking ............................................6-24
Front wheel
Installing ............................................6-33
Removing ..........................................6-32
Fuel ......................................................3-11
Fuel consumption, tips for reducing ......5-4
Fuel level warning light ..........................3-3
Fuel tank breather hose ......................3-12
Fuel tank cap ........................................3-11
Fuses, replacing ..................................6-28
H
Handlebar switches ................................3-8
Headlight bulb, replacing ......................6-29
Helmet holders ....................................3-14
High beam indicator light ........................3-3
Horn switch ............................................3-8I
Identification numbers ............................9-1
Idling speed, adjusting ..........................6-12
Ignition circuit cut-off system ................3-17
Instrument and control functions ............2-3
Instruments ............................................2-3
K
Key identification number ......................9-1
L
License plate light bulb, replacing ........6-32
Light switch ............................................3-9
M
Main switch/steering lock ..........................3-1
Model label ................................................9-2
N
Neutral indicator light ..............................3-2
O
Oil level warning light ............................3-2
Operation and important riding points ....5-1
P
Panels, removing and installing..............6-5
Parking....................................................5-5
Pass switch ............................................3-8
Periodic maintenance and lubrication
chart ....................................................6-2