Page 40 of 96

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
Page 41 of 96
PERIODIC MAINTENANCE AND MINOR REPAIR
6-4
6
EAU03541
NOTE:@l
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
l
Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid level.
• Every two years replace the internal components of the brake master cylinder and caliper, and change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
@24 Final gear oil• Check oil level and vehicle for oil leakage.ÖÖ Ö
• Change.ÖÖÖ
25
*Front and rear brake
switches• Check operation.ÖÖÖÖÖ Ö
26 Moving parts and cables• Lubricate.ÖÖÖÖ Ö
27*Lights, signals and
switches• Check operation.
• Adjust headlight beam.ÖÖÖÖÖ Ö NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (´1,000 km)
ANNUAL
CHECK
1 10203040
E_3bt.book Page 4 Thursday, September 7, 2000 10:01 AM
Page 53 of 96

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
Page 54 of 96

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
Page 56 of 96

PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6
EAU00696
Adjusting the brake lever free
playThe brake lever free play should mea-
sure 2–5 mm as shown. Periodically
check the brake lever free play and, if
necessary, adjust it as follows.
1. Loosen the locknut at the brake
lever.
2. To increase the brake lever free
play, turn the adjusting bolt in di-
rection
a. To decrease the brake
lever free play, turn the adjusting
bolt in direction
b.3. Tighten the locknut.
EW000099
WARNING
@ l
After adjusting the brake lever
free play, check the free play
and make sure that the brake is
working properly.
l
A soft or spongy feeling in the
brake lever can indicate the
presence of air in the hydraulic
system. If there is air in the hy-
draulic system, have a Yamaha
dealer bleed the system before
operating the motorcycle. Air in
the hydraulic system will dimin-
ish the braking performance,
which may result in loss of con-
trol and an accident.
@
EAU00711
Adjusting the brake pedal
position and free play
EW000104
WARNING
@ It is advisable to have a Yamaha
dealer make these adjustments. @NOTE:@ The brake pedal position should be ad-
justed before adjusting the brake pedal
free play. @
1. Brake lever free play adjusting bolt
2. Locknut
c. Brake lever free playE_3bt.book Page 19 Thursday, September 7, 2000 10:01 AM
Page 57 of 96

PERIODIC MAINTENANCE AND MINOR REPAIR
6-20
6 Brake pedal position
The brake pedal should be positioned
approximately 38 mm above the top of
the footrest as shown. Periodically
check the brake pedal position and, if
necessary, adjust it as follows.1. Loosen the locknut at the brake
pedal.
2. To raise the brake pedal, turn the
adjusting bolt in direction
a. To
lower the brake pedal, turn the ad-
justing bolt in direction
b.
3. Tighten the locknut.
EW000105
WARNING
@ After adjusting the brake pedal
height, the brake pedal free play
must be adjusted. @
Brake pedal free play
The brake pedal free play should mea-
sure 20–30 mm at the brake pedal end.
Periodically check the brake pedal free
play and, if necessary, adjust it as
follows.
To increase the brake pedal free play,
turn the adjusting nut at the brake rod
in direction
a. To decrease the brake
pedal free play, turn the adjusting nut in
direction
b.
1. Footrest
2. Distance between brake pedal and footrest
a. Brake pedal free play
1. Brake pedal position adjusting bolt
2. Locknut
1. Brake pedal free play adjusting nut
E_3bt.book Page 20 Thursday, September 7, 2000 10:01 AM
Page 58 of 96

PERIODIC MAINTENANCE AND MINOR REPAIR
6-21
6
EAU00713
Adjusting the rear brake light
switchThe rear brake light switch, which is ac-
tivated by the brake pedal, is properly
adjusted when the brake light comes
on just before braking takes effect. If
necessary, adjust the brake light switch
as follows.
Turn the adjusting nut while holding the
rear brake light switch in place. To
make the brake light come on earlier,
turn the adjusting nut in direction
a. To
make the brake light come on later,
turn the adjusting nut in direction
b.
EAU00720
Checking the front brake pads
and rear brake shoes The front brake pads and the rear
brake shoes must be checked for wear
at the intervals specified in the periodic
maintenance and lubrication chart.
EAU01119
Front brake pads
Each front brake pad is provided with
wear indicator grooves, which allow
you to check the brake pad wear with-
out having to disassemble the brake.
To check the brake pad wear, check
the wear indicator grooves. If a brake
pad has worn to the point that the wear
indicators have almost disappeared,
have a Yamaha dealer replace the
brake pads as a set.
1. Rear brake light switch
2. Rear brake light switch adjusting nut
1. Front brake pad wear indicator groove (´ 2)Front
E_3bt.book Page 21 Thursday, September 7, 2000 10:01 AM
Page 59 of 96

PERIODIC MAINTENANCE AND MINOR REPAIR
6-22
6
EAU00727
Rear brake shoes
The rear brake is provided with a wear
indicator, which allows you to check the
brake shoe wear without having to dis-
assemble the brake. To check the
brake shoe wear, check the position of
the wear indicator while applying the
brake. If a brake shoe has worn to the
point that the wear indicator reaches
the wear limit line, have a Yamaha
dealer replace the brake shoes as a
set.
EAU00732
Checking the brake fluid level Insufficient brake fluid may allow air to
enter the brake system, possibly caus-
ing it to become ineffective.
Before riding, check that the brake fluid
is above the minimum level mark and
replenish if necessary. A low brake flu-
id level may indicate worn brake pads
and/or brake system leakage. If the
brake level is low, be sure to check the
brake pads for wear and the brake sys-
tem for leakage.Observe these precautions:
l
When checking the fluid level,
make sure that the top of the mas-
ter cylinder is level by turning the
handlebars.
l
Use only the recommended quali-
ty brake fluid, otherwise the rubber
seals may deteriorate, causing
leakage and poor braking perfor-
mance.
NOTE:@ If DOT 4 is not available, DOT 3 can be
used. @l
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking performance.
l
Be careful that water does not en-
ter the master cylinder when refill-
ing. Water will significantly lower
the boiling point of the fluid and
may result in vapor lock.
1. Rear brake shoe wear limit
2. Rear brake shoe wear indicatorRear
1. Minimum level mark
Recommended brake fluid: DOT 4
E_3bt.book Page 22 Thursday, September 7, 2000 10:01 AM