brake YAMAHA XVS125 2002 User Guide

6-4
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03541
NOTE:
8The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
8Hydraulic brake service
9Regularly check and, if necessary, correct the brake fluid level.
9Every two years replace the internal components of the brake master cylinder and caliper, and change the brake
fluid.
9Replace the brake hoses every four years and if cracked or damaged.19
*Shock absorber
assemblies•Check operation and shock absorbers for oil leakage.√√√√
20*Carburetor•Check starter (choke) operation.
•Adjust engine idling speed.√√√√√ √
21 Engine oil•Change.
•Check oil level and vehicle for oil leakage.√√√√√ √
22 Engine oil filter element•Replace.√√√
23*Front and rear brake
switches•Check operation.√√√√√ √
24 Moving parts and cables•Lubricate.√√√√ √
25*Lights, signals and
switches•Check operation.
•Adjust headlight beam.√√√√√ √ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1,000 km)
ANNUAL
CHECK
1 6 12 18 24
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6-17
PERIODIC MAINTENANCE AND MINOR REPAIR
6 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 sidewall is cracked, have a
Yamaha dealer replace the tire imme-
diately.
NOTE:
The tire tread depth limits may differ
from country to country. Always com-
ply with the local regulations.
Tire information
This motorcycle is equipped with tube
tires.
EW000078
w8The front and rear tires should
be of the same make and
design, otherwise the handling
characteristics of the motorcy-
cle cannot be guaranteed.
8After extensive tests, only the
tires listed below have been
approved for this model by
Yamaha Motor Co., Ltd.
a
1
1. Side wall
a. Tire tread depthMinimum tire tread depth
(front and rear)1.6 mm
FRONT
Manufacturer Size Model
CHENG SHIN80/100-18 47P
C-916
80/100-18 M/C 47P
INOUE80/100-18 47P
MARBELLA NF27
80/100-18 M/C 47P
REAR
Manufacturer Size Model
CHENG SHIN 130/90-15 M/C 66P C-915
INOUE 130/90-15 M/C 66P
MARBELLA NR31
EAU00681
w8Have a Yamaha dealer replace
excessively worn tires.
Besides being illegal, operat-
ing the motorcycle with exces-
sively worn tires decreases
riding stability and can lead to
loss of control.
8The replacement of all wheel-
and brake-related parts,
including the tires, should be
left to a Yamaha dealer, who
has the necessary profession-
al knowledge and experience.
8It is not recommended to
patch a punctured tube. If
unavoidable, however, patch
the tube very carefully and
replace it as soon as possible
with a high-quality product.
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6-20
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU00696
Adjusting the brake lever
free play
Brake lever free play, adjusting
The brake lever free play should mea-
sure 5–8 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
direction a. To decrease the
brake lever free play, turn the
adjusting bolt in direction b.
3. Tighten the locknut.
EW000099
w8After adjusting the brake lever
free play, check the free play
and make sure that the brake
is working properly.
8A soft or spongy feeling in the
brake lever can indicate the
presence of air in the
hydraulic system. If there is air
in the hydraulic system, have
a Yamaha dealer bleed the
system before operating the
motorcycle. Air in the
hydraulic system will diminish
the braking performance,
which may result in loss of
control and an accident.
EAU03778
Adjusting the brake pedal
position and free play
Brake pedal position and free play, adjusting
EW000104
wIt is advisable to have a Yamaha
dealer make these adjustments.Brake pedal position
The top of the brake pedal should be
positioned approximately 77 mm
above the top of the footrest as
shown. Periodically check the brake
pedal position and, if necessary,
adjust it as follows.
ba
2 1
c
1
a
1. Locknut
2. Adjusting bolt
c. Brake lever free play1. Footrest
a. Brake pedal position
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6-21
PERIODIC MAINTENANCE AND MINOR REPAIR
6 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
adjusting bolt in direction b.
3. Tighten the locknut.
EWA00044
wAfter adjusting the brake pedal
position, the brake pedal free play
must be adjusted.
Brake pedal free play
The brake pedal free play should
measure 20–30 mm at the brake
pedal end. Periodically check the
brake pedal free play and, if neces-
sary, 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
a 2
b
a
1
b a
1. Locknut
2. Brake pedal position adjusting bolta. Brake pedal free play 1. Brake pedal free play adjusting nut
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6-22
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EW000106
w8After adjusting the drive chain
slack or removing and
installing the rear wheel,
always check the brake pedal
free play.
8If proper adjustment cannot be
obtained as described, have a
Yamaha dealer make this
adjustment.
8After adjusting the brake pedal
free play, check the operation
of the brake light.
EAU00713
Adjusting the rear brake light
switch
Rear brake light switch, adjusting
The rear brake light switch, which is
activated by the brake pedal, is prop-
erly 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 ear-
lier, turn the adjusting nut in direction
a. To make the brake light come on
later, turn the adjusting nut in direc-
tion b.
EAU00720
Checking the front brake
pads and rear brake shoesThe front brake pads and the rear
brake shoes must be checked for
wear at the intervals specified in the
periodic maintenance and lubrication
chart.
12
b
a
1. Rear brake light switch
2. Adjusting nut
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6-23
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU00725
Front brake pads
Each front brake pad is provided with
a wear indicator groove, which allows
you to check the brake pad wear
without having to disassemble the
brake. To check the brake pad wear,
check the wear indicator groove. If a
brake pad has worn to the point that
the wear indicator groove has almost
disappeared, have a Yamaha dealer
replace the brake pads as a set.
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 disassemble 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.
EAU03294
Checking the brake fluid
level
Brake fluid level, checking
Insufficient brake fluid may allow air
to enter the brake system, possibly
causing it to become ineffective.
Before riding, check that the brake
fluid is above the minimum level mark
and replenish if necessary. A low
brake fluid 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 system for leak-
age.
1
1
2
1
1. Wear indicator groove 1. Wear limit line
2. Wear indicator1. Mimimum level markFront
Rear
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6-24
PERIODIC MAINTENANCE AND MINOR REPAIR
6Observe these precautions:
8When checking the fluid level,
make sure that the top of the
brake fluid reservoir is level.
8Use only the recommended qual-
ity brake fluid, otherwise the rub-
ber seals may deteriorate, caus-
ing leakage and poor braking
performance.
8Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking perfor-
mance.
8Be careful that water does not
enter the brake fluid reservoir
when refilling. Water will signifi-
cantly lower the boiling point of
the fluid and may result in vapor
lock.8Brake fluid may deteriorate paint-
ed surfaces or plastic parts.
Always clean up spilled fluid
immediately.
8As the brake pads wear, it is nor-
mal for the brake fluid level to
gradually go down. However, if
the brake fluid level goes down
suddenly, have a Yamaha dealer
check the cause.
EAU03985
Changing the brake fluid
Brake fluid, changing
Have a Yamaha dealer change the
brake fluid at the intervals specified in
the NOTE after the periodic mainte-
nance and lubrication chart. In addi-
tion, have the oil seals of the brake
master cylinder and caliper as well as
the brake hose replaced at the inter-
vals listed below or whenever they
are damaged or leaking.
8Oil seals: Replace every two
years.
8Brake hose: Replace every four
years. Recommended brake fluid:
DOT 4
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6-25
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU00744
Drive chain slack
Drive chain slack
The drive chain slack should be
checked before each ride and adjust-
ed if necessary.
To check the drive chain slack
Checking
1. Place the motorcycle on a level
surface and hold it in an upright
position.NOTE:
When checking and adjusting the
drive chain slack, the motorcycle
should be positioned straight up and
there should be no weight on it.
2. Shift the transmission into the
neutral position.
3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain,
and then measure the drive
chain slack as shown.
4. If the drive chain slack is incor-
rect, adjust it as follows.
EAU03780
To adjust the drive chain slack
1. Loosen the brake pedal free play
adjusting nut, axle nut, and lock-
nut at each end of the swingarm.
a
21
a. Drive chain slack 1. Brake pedal free play adjusting nut
2. Locknut
Drive chain slack:
30–40 mm
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6-26
PERIODIC MAINTENANCE AND MINOR REPAIR
62. To tighten the drive chain, turn
the adjusting nut at each end of
the swingarm in direction a. To
loosen the drive chain, turn the
adjusting nut at each end of the
swingarm in direction b, and
then push the rear wheel for-
ward.
NOTE:
Using the alignment marks on each
side of the swingarm, make sure that
both adjusting nuts are in the same
position for proper wheel alignment.
EC000096
cCImproper drive chain slack will
overload the engine as well as
other vital parts of the motorcycle
and can lead to chain slippage or
breakage. To prevent this from
occurring, keep the drive chain
slack within the specified limits.3. Tighten both locknuts, and then
tighten the axle nut to the speci-
fied torque.
4. Adjust the brake pedal free play.
(See page 6-21 for brake pedal
free play adjustment proce-
dures.)
EW000103
wAfter adjusting the brake pedal
free play, check the operation of
the brake light.
1
3
1
2
ba
1. Axle nut 1. Drive chain adjusting nut
2. Alignment marks
3. Locknut
Tightening torque:
Axle nut:
104 Nm (10.4 m0kgf)
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6-28
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EW000112
wDamage to the outer sheath may
interfere with proper cable opera-
tion and will cause the inner cable
to rust. Replace a damaged cable
as soon as possible to prevent
unsafe conditions.
EAU04034
Checking and lubricating the
throttle grip and cable
Throttle grip and cable, checking and lubricating
The operation of the throttle grip
should be checked before each ride.
In addition, the cable should be lubri-
cated or replaced at the intervals
specified in the periodic maintenance
chart.
EAU03370
Checking and lubricating the
brake and shift pedals
Brake and shift pedals, checking and lubricating
The operation of the brake and shift
pedals should be checked before
each ride, and the pedal pivots
should be lubricated if necessary.
Recommended lubricant:
Lithium-soap-based grease
(all-purpose grease)
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