PRE-OPERATION CHECKS
4-2
4
NOTE:@ Pre-operation checks should be made each time the motorcycle is used. Such an inspection can be accomplished in a very
short time; and the added safety it assures is more than worth the time involved. @
EWA00033
WARNING
@ If any item in the Pre-operation check list is not working properly, have it inspected and repaired before operating
the motorcycle. @Control cables• Make sure that operation is smooth.
• Lubricate if necessary.6-24
Wheels and tires• Check for damage.
• Check tire condition and tread depth.
• Check air pressure.
• Correct if necessary.6-15–6-17
Brake and shift pedals• Make sure that operation is smooth.
• Lubricate pedal pivoting points if necessary.6-25
Brake and clutch levers• Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.6-25
Sidestand• Make sure that operation is smooth.
• Lubricate pivot if necessary.6-25–6-26
Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.
• Tighten if necessary.—
Instruments, lights, signals
and switches• Check operation.
• Correct if necessary.—
Sidestand switch• Check operation of ignition circuit cut-off system.
• If system is defective, have Yamaha dealer check vehicle.3-10
Battery• Check fluid level.
• Fill with distilled water if necessary.6-29–6-30 ITEM CHECKS PAGE
E_3bt.book Page 2 Thursday, September 7, 2000 10:01 AM
6
PERIODIC MAINTENANCE AND MINOR REPAIR
Owner’s tool kit .................................................... 6-1
Periodic maintenance and lubrication chart ......... 6-2
Checking the spark plugs .................................... 6-5
Engine oil and oil filter element ............................ 6-7
Final gear oil ........................................................ 6-9
Cleaning the air filter element ............................ 6-11
Adjusting the carburetors .................................... 6-13
Adjusting the engine idling speed ....................... 6-13
Adjusting the throttle cable free play ................... 6-14
Adjusting the valve clearance ............................. 6-14
Tires ................................................................... 6-15
Spoke wheels ..................................................... 6-17
Adjusting the clutch lever free play .................... 6-18
Adjusting the brake lever free play ...................... 6-19
Adjusting the brake pedal position and
free play ........................................................... 6-19
Adjusting the rear brake light switch ................... 6-21
Checking the front brake pads and rear
brake shoes ..................................................... 6-21
Checking the brake fluid level ............................ 6-22
Changing the brake fluid ..................................... 6-23Checking and lubricating the cables .................. 6-23
Checking and lubricating the throttle
grip and cable .................................................. 6-24
Checking and lubricating the brake and
shift pedals ...................................................... 6-25
Checking and lubricating the brake and
clutch levers ..................................................... 6-25
Checking and lubricating the sidestand ............. 6-25
Lubricating the rear suspension ........................ 6-26
Checking the front fork ....................................... 6-27
Checking the steering ........................................ 6-27
Checking the wheel bearings ............................. 6-28
Battery ............................................................... 6-29
Replacing the fuses .......................................... 6-31
Replacing the headlight bulb .............................. 6-31
Replacing a turn signal light bulb or the
tail/brake light bulb ........................................... 6-33
Supporting the motorcycle ................................ 6-33
Front wheel ....................................................... 6-34
Rear wheel ........................................................ 6-35
Troubleshooting .................................................. 6-37
Troubleshooting chart ........................................ 6-38
E_3bt.book Page 1 Thursday, September 7, 2000 10:01 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
10
*Brake hose• Check for cracks or damage.ÖÖÖÖ Ö
• Replace. (See NOTE on page 6-4.) Every 4 years
11*Wheels• Check runout, spoke tightness and for damage.
• Tighten spokes if necessary.ÖÖÖÖ
12*Tires• Check tread depth and for damage.
• Replace if necessary.
• Check air pressure.
• Correct if necessary.ÖÖÖÖ
13*Wheel bearings• Check bearing for looseness or damage.ÖÖÖÖ
14*Swingarm• Check operation and for excessive play.ÖÖÖÖ
• Lubricate with molybdenum disulfide grease. Every 50,000 km
15*Steering bearings• Check bearing play and steering for roughness.ÖÖÖÖÖ
• Lubricate with lithium-soap-based grease. Every 20,000 km
16*Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.ÖÖÖÖ Ö
17 Sidestand• Check operation.
• Lubricate.ÖÖÖÖ Ö
18*Sidestand switch• Check operation.ÖÖÖÖÖ Ö
19*Front fork• Check operation and for oil leakage.ÖÖÖÖ
20*Rear shock absorber
assemblies• Check operation and shock absorbers for oil leakage.ÖÖÖÖ
21*Carburetors• Check starter (choke) operation.
• Adjust engine idling speed and synchronization.ÖÖÖÖÖ Ö
22 Engine oil• Change.ÖÖÖÖÖ Ö
23 Engine oil filter element•Replace.ÖÖÖ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (´1,000 km)
ANNUAL
CHECK
1 10203040
E_3bt.book Page 3 Thursday, September 7, 2000 10:01 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6
NOTE:@ Make sure that the O-ring is properly
seated. @7. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
8. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil filler
cap.
EC000067
CAUTION:@ If the oil level warning light flickers
or remains on, immediately turn the
engine off and have a Yamaha deal-
er check the vehicle. @9. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
10. Turn the engine off, and then
check the oil level and correct it if
necessary.
EAU03714
Final gear oil The final gear case must be checked
for oil leakage before each ride. If any
leakage is found, have a Yamaha deal-
er check and repair the motorcycle. In
addition, the final gear oil level must be
checked and the oil changed as follows
at the intervals specified in the periodic
maintenance and lubrication chart.
EW000066
WARNING
_ l
Make sure that no foreign mate-
rial enters the final gear case.
l
Make sure that no oil gets on
the tire or wheel.
_
Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kg)
Recommended engine oil:
See page 8-1.
Oil quantity:
Without oil filter element
replacement:
2.6 L
With oil filter element
replacement:
2.8 L
Total amount (dry engine):
3.2 L
E_3bt.book Page 9 Thursday, September 7, 2000 10:01 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6
l
Adjust the suspension and tire
air pressure with regard to the
load.
l
Check the tire condition and air
pressure before each ride.
@
Tire inspection
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail
or glass fragments in it, or if the side-
wall is cracked, have a Yamaha dealer
replace the tire immediately.CE-08ENOTE:@ The tire tread depth limits may differ
from country to country. Always comply
with the local regulations. @
EW000079
WARNING
@ l
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the
motorcycle with excessively
worn tires decreases riding sta-
bility and can lead to loss of
control.
l
The replacement of all wheel-
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.
@
1. Sidewall
a. Tire tread depthMinimum tire tread depth
(front and rear)1.6 mm
E_3bt.book Page 16 Thursday, September 7, 2000 10:01 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-17
6Tire information
This motorcycle is equipped with tube
tires.
EW000078
WARNING
@ l
The front and rear tires should
be of the same make and de-
sign, otherwise the handling
characteristics of the motor-
cycle cannot be guaranteed.
l
After extensive tests, only the
tires listed below have been ap-
proved for this model by
Yamaha Motor Co., Ltd.
@CE-10EEAU00681
WARNING
@ l
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the
motorcycle with excessively
worn tires decreases riding sta-
bility and can lead to loss of
control.
l
The replacement of all wheel-
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.
l
It is not recommended to patch
a punctured tube. If unavoid-
able, however, patch the tube
very carefully and replace it as
soon as possible with a high-
quality product.
@
EAU00685
Spoke wheelsTo maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified wheels.l
The wheel rims should be checked
for cracks, bends or warpage, and
the spokes for looseness or dam-
age before each ride. If any dam-
age is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair to
the wheel. A deformed or cracked
wheel must be replaced.
l
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
l
Ride at moderate speeds after
changing a tire since the tire sur-
face must first be “broken in” for it
to develop its optimal characteris-
tics.
FRONT
Manufacturer Size Model
Bridgestone 3.00-19 49S L303A
Dunlop 3.00-19 49S F14G
REAR
Manufacturer Size Model
Bridgestone 140/90-15 M/C 70S G508
Dunlop 140/90-15 M/C 70S K425E_3bt.book Page 17 Thursday, September 7, 2000 10:01 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
6
EAU02939
Checking the front forkThe condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
EW000115
WARNING
@ Securely support the motorcycle so
that there is no danger of it falling
over. @Check the inner tubes for scratches,
damage and excessive oil leakage.To check the operation
1. Place the motorcycle on a level
surface and hold it in an upright
position.
2. While applying the front brake,
push down hard on the handle-
bars several times to check if the
front fork compresses and re-
bounds smoothly.
EC000098
CAUTION:@ If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it. @
EAU00794
Checking the steeringWorn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.
1. Place a stand under the engine to
raise the front wheel off the
ground.
EW000115
WARNING
@ Securely support the motorcycle so
that there is no danger of it falling
over. @
E_3bt.book Page 27 Thursday, September 7, 2000 10:01 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-28
6 2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the
steering.
EAU01144
Checking the wheel bearingsThe front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrica-
tion chart. If there is play in the wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer
check the wheel bearings.
E_3bt.book Page 28 Thursday, September 7, 2000 10:01 AM