2004 YAMAHA XVS650A maintenance

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
NOTE:
If the specified idling speed cannot be
obtained as described above, have aYamaha dealer make the adjustment.
EAU21380
Adjusting the throttle cable
free play The throttle cable free play should mea-
sure 4.0–6.0 mm (0.16–0.24 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
EAU21400
Adjusting the valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
1. Throttle stop screwEngine idling speed:
1150–1250 r/min
1. Throttle cable free play
U5SCE1E0.book Page 13 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
6
EAU33390
Tires To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10500


The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).


The tire air pressure must be ad-
justed in accordance with the
riding speed and with the total
weight of rider, passenger, car-
go, and accessories approvedfor this model.
WARNING
EWA11020
Because loading has an enormous
impact on the handling, braking,
performance and safety characteris-
tics of your motorcycle, you should
keep the following precautions in
mind.

NEVER OVERLOAD THE
MOTORCYCLE! Operation of an
overloaded motorcycle may re-
sult in tire damage, loss of con-
trol, or severe injury. Make sure
that the total weight of rider,passenger, cargo, and accesso-
ries does not exceed the speci-
fied maximum load for the
vehicle.


Do not carry along loosely
packed items, which can shift
during a ride.


Securely pack the heaviest
items close to the center of the
motorcycle and distribute the
weight evenly on both sides.


Adjust the suspension and tire
air pressure with regard to the
load.


Check the tire condition and airpressure before each ride.
Tire air pressure (measured on cold
tires):
0–90 kg (0–198 lb):
Fr o nt :
225 kPa (33 psi) (2.25 kgf/cm²)
Rear:
225 kPa (33 psi) (2.25 kgf/cm²)
90–198 kg (198–437 lb):
Fr o nt :
225 kPa (33 psi) (2.25 kgf/cm²)
Rear:
250 kPa (36 psi) (2.50 kgf/cm²)
Maximum load*:
198 kg (437 lb)
* Total weight of rider, passenger, car-
go and accessories
U5SCE1E0.book Page 14 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
6Tire 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 re-
place the tire immediately.
NOTE:The tire tread depth limits may differ
from country to country. Always complywith the local regulations.
WARNING
EWA10570


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.


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.


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.
Tire information
This motorcycle is equipped with spoke
wheels and tube tires.
WARNING
EWA10460


The front and rear tires should
be of the same make and de-
sign, otherwise the handling
characteristics of the vehicle
cannot be guaranteed.


After extensive tests, only the
tires listed below have been ap-
proved for this model byYamaha Motor Co., Ltd.
1. Tire sidewall
2. Tire tread depthMinimum tire tread depth (front and
rear):
1.6 mm (0.06 in)
Front tire:
Size:
130/90-16M/C 67S
Manufacturer/model:
BRIDGESTONE/G703
DUNLOP/D404F
Rear tire:
Size:
170/80-15M/C 77S
Manufacturer/model:
BRIDGESTONE/G702
DUNLOP/D404G
U5SCE1E0.book Page 15 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6
EAU21940
Spoke wheels To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified wheels.

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.


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.


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.
EAU22040
Adjusting the clutch lever free
play The clutch lever free play should mea-
sure 5.0–10.0 mm (0.20–0.39 in) as
shown. Periodically check the clutch le-
ver free play and, if necessary, adjust it
as follows.
1. Loosen the locknut at the clutch le-
ver.
2. To increase the clutch lever free
play, turn the adjusting bolt in di-
rection (a). To decrease the clutch
lever free play, turn the adjusting
bolt in direction (b).3. If the specified clutch lever free
play could be obtained as de-
scribed above, tighten the locknut
and skip the rest of the procedure,
otherwise proceed as follows.
4. Fully turn the adjusting bolt at the
clutch lever in direction (a) to loos-
en the clutch cable.
5. Loosen the locknut at the crank-
case.
6. To increase the clutch lever free
play, turn the adjusting nut in direc-
tion (a). To decrease the clutch le-
ver free play, turn the adjusting nut
in direction (b).1. Locknut
2. Clutch lever free play adjusting bolt
3. Clutch lever free play
1. Clutch lever free play adjusting nut
(crankcase)
2. Locknut
U5SCE1E0.book Page 16 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-17
67. Tighten the locknut at the clutch le-
ver and the crankcase.
EAU22092
Adjusting the brake lever free
play The brake lever free play should mea-
sure 10.0–15.0 mm (0.39–0.59 in) as
shown. Periodically check the brake le-
ver free play and, if necessary, adjust it
as follows.1. Loosen the locknut at the brake le-
ver.
2. To increase the brake lever free
play, turn the adjusting screw in di-
rection (a). To decrease the brake
lever free play, turn the adjusting
screw in direction (b).
3. Tighten the locknut.
WARNING
EWA10630


After adjusting the brake lever
free play, check the free play
and make sure that the brake is
working properly.


A soft or spongy feeling in the
brake lever can indicate the
presence of air in the hydraulic
1. Brake lever free play
1. Locknut
2. Brake lever free play adjusting screw
U5SCE1E0.book Page 17 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-18
6 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.
EAU22231
Adjusting the brake pedal
position and free play
WARNING
EWA10670
It is advisable to have a Yamahadealer make these adjustments.NOTE:The brake pedal position should be ad-
justed before adjusting the brake pedalfree play.
Brake pedal position
The brake pedal should be positioned
approximately 108.0 mm (4.25 in)
above the top of the footrest as shown.Periodically check the brake pedal po-
sition and, if necessary, adjust it as fol-
lows.
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.
WARNING
EWA11230
After adjusting the brake pedal posi-
tion, the brake pedal free play mustbe adjusted.
1. Distance between brake pedal and footrest
2. Brake pedal free play
1. Locknut
2. Brake pedal position adjusting bolt
U5SCE1E0.book Page 18 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6Brake pedal free play
The brake pedal free play should mea-
sure 20.0–30.0 mm (0.79–1.18 in) 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).
EAU22270
Adjusting the rear brake light
switch The 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).
EAU22380
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 main-
tenance and lubrication chart.
EAU22430
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
1. Brake pedal free play adjusting nut
1. Brake light switch
2. Rear brake light switch adjusting nut
1. Brake pad wear indicator groove
U5SCE1E0.book Page 19 Monday, September 8, 2003 11:32 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-20
6 indicator grooves have almost disap-
peared, have a Yamaha dealer replace
the brake pads as a set.
EAU22540
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.
EAU22580
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 fluid
level may indicate worn brake pads
and/or brake system leakage. If the
brake fluid level is low, be sure to check
the brake pads for wear and the brake
system for leakage.
Observe these precautions:

When checking the fluid level,
make sure that the top of the brake
fluid reservoir is level.


Use only the recommended quality
brake fluid, otherwise the rubber
seals may deteriorate, causing
leakage and poor braking perfor-
mance.


Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking performance.


Be careful that water does not en-
ter the brake fluid reservoir when
refilling. Water will significantly
lower the boiling point of the fluid
and may result in vapor lock.


Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.


As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
1. Brake shoe wear limit line
2. Brake shoe wear indicator
1. Minimum level mark
Recommended brake fluid:
DOT 4
U5SCE1E0.book Page 20 Monday, September 8, 2003 11:32 AM