air filter YAMAHA BT1100 2003 Owners Manual

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DESCRIPTIONEAU00026
2-2
2
7. Fuse box (page 6-28)
8. Battery (page 6-26)
9. Helmet holders (page 3-14)
10. Air filter element (page 6-10)
11. Engine oil filter element (page 6-6)
12. Brake pedal (page 3-10)
Right view

6
Owner’s tool kit .............................................................. 6-1
Periodic maintenance and lubrication chart .................... 6-2
Removing and installing panels ...................................... 6-5
Checking the spark plugs ................................................ 6-5
Engine oil and oil filter element ........................................ 6-7
Final gear oil .................................................................... 6-9
Cleaning the air filter element .......................................... 6-10
Adjusting the carburetors ................................................ 6-12
Adjusting the engine idling speed .................................... 6-12
Adjusting the throttle cable free play................................ 6-13
Adjusting the valve clearance .......................................... 6-13
Tires ................................................................................ 6-14
Cast wheels .................................................................... 6-16
Adjusting the clutch lever free play .................................. 6-17
Adjusting the brake pedal position .................................. 6-18
Checking the front and rear brake pads .......................... 6-19
Checking the brake fluid level .......................................... 6-19
Changing the brake fluid .................................................. 6-21
Adjusting the shift pedal position .................................... 6-21
Checking and lubricating the cables ................................ 6-22Checking and lubricating the
throttle grip and cable ...................................................... 6-22
Checking and lubricating the brake and shift
pedals .............................................................................. 6-23
Checking and lubricating the brake and
clutch levers .................................................................... 6-23
Checking and lubricating the sidestand .......................... 6-24
Checking the front fork .................................................... 6-24
Checking the steering ...................................................... 6-25
Checking the wheel bearings .......................................... 6-25
Battery ............................................................................ 6-26
Replacing the fuses ........................................................ 6-28
Replacing the headlight and auxiliary light bulb .............. 6-29
Replacing a turn signal light bulb .................................... 6-31
Replacing the tail/brake light bulb .................................... 6-31
Replacing the license plate light bulb .............................. 6-32
Front wheel ...................................................................... 6-32
Rear wheel ...................................................................... 6-33
Troubleshooting .............................................................. 6-35
Troubleshooting chart ...................................................... 6-36
PERIODIC MAINTENANCE AND MINOR REPAIREAU00462

EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
EAU03685
Periodic maintenance and lubrication chart
NOTE:
•The annual checks must be performed every year, except if a kilometer-based maintenance is performed instead.
•From 50,000 km, repeat the maintenance intervals starting from 10,000 km.
•Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills.
6-2
6
ODOMETER READING (x 1,000 km)ANNUALN0. ITEM CHECK OR MAINTENANCE JOB
1 10203040CHECK
1*Fuel line•Check fuel hoses and vacuum hose for cracks
√√√√ √or damage.
2*Fuel filter•Check condition.√√
•Check condition.
√√
3 Spurk plugs•Clean and regap.
•Replace.√√
4
*Valves•Check valve clearance.
√√√√•Adjust.
5 Air filter element•Clean.√√•Replace.√√
6 Clutch•Check operation.
√√ √√ √
•Adjust.
•Check operation,fluid level and vehicle
for fluid leakeage. √√ √√ √ √
7*Front brake
(See NOTE on page 6-4).
•Replace brake pads. Whenever worm to the limit

EAU00462PERIODIC MAINTENANCE AND MINOR REPAIR
EAU03884
NOTE:
•The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
•Hydraulic brake service
•Regularly check and, if necessary, correct the brake fluid level.
•Every two years replace the internal components of the brake master cylinders and calipers, and change the brake fluid.
•Replace the brake hoses every four years and if cracked or damaged.
6-4
6
ODOMETER READING (x 1,000 km)ANNUALN0. ITEM CHECK OR MAINTENANCE JOB
1 10203040CHECK
Rear suspension
•Check operation. √√√√
20*relay arm and
connecting arm
•Lubricate with lithium-soap-based grease.√√
pivoting points
•Check starter (choke) operation.
21
*Carburators•Adjust engine idling speed and √√ √√ √ √synchronization.
22 Engine oil•Change.√√ √√ √ √
23Engine oil filter
•Replace. √√√
element
•Check oil level and vehicle for oil
√√ √
24Final gear
leakage.oil
•Change.√√√
25Moving parts and
•Lubricate.√√√√ √
cables
•Check the air cut valve and reed valve for
26
*Air induction
damage.
√√√√ √
system
•Replace the entire air induction system if
necessary.
27
*Lights, signals and •Check operation.
√√ √√ √ √
switches•Adjust headlight beam.

EAU00462
1. Engine oil filler cap
PERIODIC MAINTENANCE AND MINOR REPAIR
1
NOTE:
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. Start the engine, warm it up for sever-
al minutes, and then turn it off.
3. Wait a few minutes until the oil set-
tles, and then check the oil level
through the check window located at
the bottom-left side of the crankcase.
NOTE:
The engine oil should be between the min-
imum and maximum level marks.
4. If the engine oil is below the minimum
level mark, add sufficient oil of the
recommended type to raise it to the
correct level.To change the engine oil without oil
filter element replacement
1. Start the engine, warm it up for sever-
al minutes, and then turn it off.
2. Place an oil pan under the engine to
collect the used oil.
3. Remove the engine oil filler cap and
drain bolt to drain the oil from the
crankcase.
6-7
6
2
31
EAU01712
Engine oil and oil filter element
The engine oil level should be checked be-
fore each ride. In addition, the oil must be
changed and the oil filter element replaced
at the intervals specified in the periodic
maintenance and lubrication chart.
To check the engine oil level
1. Place the motorcycle on a level sur-
face and hold it in an upright position.
1. Engine oil level window
2. Maximum level mark
3. Minimum level mark

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
2 1
6. Check the final gear case for oil leak-
age. If oil is leaking, check for the
cause.
EAUB0008
Cleaning the air filter element
The air filter element should be cleaned at
the intervals specified in the periodic main-
tenance and lubrication chart. Clean the
air filter element more frequently if you are
riding in unusually wet or dusty areas. 4. Add the recommended final gear oil
to the brim of the filler hole.
NOTE:
GL4 is a quality rating. Hypoid gear oils
rated GL5 or GL6 may also be used.
5. Install and tighten the oil filler bolt.1. Remove the seat. (See page 3-13 for
seat removal and installation proce-
dures).
2. Remove panels 1 and 2. (See page
6-5 for panel removal and installation
procedures).
3. Remove the fuel tank bolts.
6-10
6
Tightening torque:
Final gear oil drain bolt:
23 Nm (2.3 m·kgf)
Recommended final gear oil:
Hypoid gear oil SAE 80 (API GL4)
or multi-grade hypoid gear oil
SAE 80W-90
Oil quantity:
0.2 L
3. Install the final gear oil drain bolt, and
then tighten it to the specified torque.
1. Fuel tank right bolt (x 2)
2. Fuel tank left bolt (x 2)


1. Left panel
2. Right panel

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.

SPECIFICATIONSEAU01038
8-1
8
Specifications
ModelBT1100
Dimensions
Overall length 2,200 mm
Overall width 800 mm
Overall height 1,140 mm
Seat height 812 mm
Wheelbase 1,530 mm
Ground clearance 168 mm
Minimum turning radius 2,980 mm
Basic weight
(with oil and full fuel tank)250.5 kg
Engine
Engine type Air-cooled 4-stroke,
SOHC
Cylinder arrangement V type 2-cylinder
Displacement 1,063 cm
3
Bore x stroke 95.0 x 75.0 mm
Compression ratio 8.3 : 1
Starting system Electric starter
Lubrication system Wet sumpEngine oil
Ty p e
Recommended API Service SE, SF, SG or
engine oil classification higher
Be sure to use motor oils that do not contain anti-friction modifiers.
Passenger car motor oils (often labeled “ENERGY CONSERVING II”)
contain anti-friction additives which will cause clutch and/ or starter
clutch slippage, resulting in reduced component life and poor
engine performance.8
Quantity
Without oil filter
cartridge replacement 3.0 L
With oil filter cartridge
replacement 3.1 L
Total amount
(dry engine) 3.6 L
CAUTION:
-20-10 0 1020304050°C
SAE 10W-30
SAE 10W-40
SAE 20W-40
SAE 15W-50
SAE 15W-40

SPECIFICATIONSEAU01038
8-2
8
Final gear oil
Type Hypoid gear oil SAE 80
(API GL4) or multigrade hypoid
gear oil SAE 80W-90
Quantity 0.2 L
Air filterDry type element
Fuel
Type Regular unleaded gasoline
Fuel tank capacity 20 L
Fuel reserve amount 5.8 L
Carburetor
Manufacturer MIKUNI
Model x quantity BSR37 x 2
Spark plug
Manufacturer/model NGK / BPR7ES or
DENSO / W22EPR-U
Gap 0.7–0.8 mm
Clutch type Wet, multiple-disc
Transmission
Primary reduction system Spur gear
Primary reduction
ratio 1.660
Secondary reduction
system Shaft drive
Secondary reduction
ratio 2.875
Transmission type Constant mesh 5-speed
Operation Left footGear ratio 1st2,353
2nd1,667
3rd1,286
4th1,032
5th0,853
Chassis
Frame type Twin tube Backbone
Caster angle 25°
Trail 106 mm
Tires
Front
Type Tubeless
Size 120/70-ZR17 (58W)
Manufacturer/ Dunlop / D205F TL
model Metzeler / MEZ3F TL
Rear
Type Tubeless
Size 170/60-ZR17 (72W)
Manufacturer/ Dunlop / D205 TL
model Metzeler / MEZ3 TL
Maximum load* 200 kg