2000 YAMAHA XJ900S Owners Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
6-11
6
EAU02975
Final gear oil replacement1. Put the motorcycle on the center-
stand.
2. Place an oil pan under the final
gear case.
3. Remove the oil filler bolt and the
drain bolt to drain the oil.
4. Install and tighten the drain bolt to
the specified torque.5. Fill the gear case with the recom-
mended oil.
NOTE:@ “GL-4” is a quality and additive rating.
Hypoid gear oils rated “GL-5” or “GL-6”
may also be used. @
EW000066
WARNING
@ Do not let foreign material enter the
final gear case. Be sure oil does not
get on the tire or wheel. @6. Install the oil filler bolt.
7. After replacing the final gear oil, be
sure to check for oil leakage.
EAU00574*
Air filterThe air filter should be cleaned at the
specified intervals. It should be cleaned
more frequently if you are riding in un-
usually wet or dusty areas.
1. Remove the seat.
2. Turn the fuel cock lever to “OFF”
and disconnect the fuel hose.
1. Final gear oil drain bolt
2. Final gear oil
3. Correct level
4. Final gear oil filler boltTightening torque:
Drain bolt:
23 Nm (2.3 m·kg)
Recommended oil:
SAE 80 API GL-4 Hypoid gear oil
If desired, an SAE 80W90 hypoid
gear oil may be used for all condi-
tions.
Final gear oil quantity:
0.2 L
1. Fuel tank
2. Fuel sender lead
3. Fuel hose
4. Fuel cock

PERIODIC MAINTENANCE AND MINOR REPAIR
6-12
6 3. Remove the fuel tank bolts.
4. Disconnect the fuel sender lead
and remove the fuel tank.5. Remove the air filter case cover by
removing the screws.6. Pull out the air filter.
1. Bolt (´ 2)
1. Screw (´ 4)
1. Air filter

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
67. Tap the air filter lightly to remove
most of the dust and dirt and blow
out the remaining dirt with com-
pressed as shown. If the air filter is
damaged, replace it.
8. Reassemble by reversing the re-
moval procedure.
EC000082
CAUTION:@ l
Make sure the air filter is prop-
erly seated in the air filter case.
l
The engine should never be run
without the air filter installed.
Excessive piston and/or cylin-
der wear may result.
@
EAU00630
Carburetor adjustmentThe carburetors are important parts of
the engine and require very sophisti-
cated adjustment. Most adjustments
should be left to a Yamaha dealer who
has the professional knowledge and
experience to do so. However, the idle
speed may be adjusted by the owner
as part of routine maintenance.
EC000095
CAUTION:@ The carburetors were set at the
Yamaha factory after many tests. If
they are changed, poor engine per-
formance and damage may result. @
EAU00632
Idle speed adjustment1. Start the engine and warm it up for
a few minutes at approximately
1,000 to 2,000 r/min. Occasionally
rev the engine to 4,000 to
5,000 r/min. The engine is warm
when it quickly responds to the
throttle.

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
6 2. Set the idle to the specified engine
speed by adjusting the throttle
stop screw. Turn the screw in di-
rection
a to increase engine
speed and in direction
b to de-
crease engine speed.
NOTE:@ If the specified idle speed cannot be
obtained by performing the above ad-
justment, consult a Yamaha dealer. @
EAU00635
Throttle cable free play
inspectionThere should be a free play of 3 ~
5 mm at the throttle grip. If the free play
is incorrect, ask a Yamaha dealer to
make this adjustment.
EAU00637
Valve clearance adjustmentThe correct valve clearance changes
with use, resulting in improper fuel/air
supply or engine noise. To prevent this,
the valve clearance must be adjusted
regularly. This adjustment however,
should be left to a professional
Yamaha service technician.
1. Throttle stop screw
Standard idle speed:
950 ~ 1,050 r/min
a. Free play

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
6
EAU00658
TiresTo ensure maximum performance,
long service and safe operation, note
the following:
Tire air pressure
Always check and adjust the tire pres-
sure before operating the motorcycle.
EW000082
WARNING
@ Tire inflation pressure should be
checked and adjusted when the
temperature of the tire equals the
ambient air temperature. Tire infla-
tion pressure must be adjusted ac-
cording to total weight of cargo,
rider, passenger, and accessories
(fairing, saddlebags, etc. if approved
for this model), and vehicle speed. @
CE-33EEW000083
WARNING
@ Proper loading of your motorcycle
is important for several characteris-
tics of your motorcycle, such as
handling, braking, performance and
safety. Do not carry loosely packed
items that can shift. Securely pack
your heaviest items close to the
center of the motorcycle, and dis-
tribute the weight evenly from side
to side. Properly adjust the suspen-
sion for your load, and check the
condition and pressure of your tires.
NEVER OVERLOAD YOUR MOTOR-
CYCLE. Make sure the total weight
of the cargo, rider, passenger, and
accessories (fairing, saddlebags,
etc. if approved for this model) does
not exceed the maximum load of the
motorcycle. Operation of an over-
loaded motorcycle could cause tire
damage, an accident, or even injury. @
Maximum load* 205 kg
Cold tire pressure Front Rear
Up to 90 kg load*225 kPa
(2.25 kg/cm
2,
2.25 bar)250 kPa
(2.50 kg/cm
2,
2.50 bar)
90 kg Maximum load*250 kPa
(2.50 kg/cm
2,
2.50 bar)290 kPa
(2.90 kg/cm
2,
2.90 bar)
High speed riding250 kPa
(2.50 kg/cm
2,
2.50 bar)290 kPa
(2.90 kg/cm
2,
2.90 bar)
* Load is the total weight of cargo, rider, passenger
and accessories.

PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6 Tire inspection
Always check the tires before operating
the motorcycle. If center tread depth
reaches the limit as shown, if the tire
has a nail or glass fragments in it, or if
the side wall is cracked, contact a
Yamaha dealer immediately and have
the tire replaced.
EW000095
WARNING
@ Operating the motorcycle with ex-
cessively worn tires decrease riding
stability and can lead to loss of con-
trol. Have excessively worn tires re-
placed by a Yamaha dealer
immediately. Brakes, tires, and relat-
ed wheel parts replacement should
be left to a Yamaha Service Techni-
cian. @CE-26ENOTE:@ These limits may be different by regula-
tion from country to country. If so, con-
form to the limits specified by the
regulations of your own country. @
Tire information
This motorcycle is equipped with tube-
less tires, tire valves and cast wheels.
1. Side wall
a. Tread depth
Minimum tire tread depth
(front and rear)1.6 mm
1. Tire valve
2. Valve core
3. Valve cap with seal

PERIODIC MAINTENANCE AND MINOR REPAIR
6-17
6
EW000080
WARNING
@ l
After extensive tests, the tires
mentioned below have been ap-
proved by Yamaha Motor Co.,
Ltd. for this model. No guaran-
tee for handling characteristics
can be given if tire combina-
tions other than what is ap-
proved are used on this
motorcycle. The front and rear
tires should be of the same
manufacture and design.
l
The use of tire valves and valve
cores other than listed below
could cause tire deflation dur-
ing extreme high speed riding.
Always use genuine parts or
their equivalent for replace-
ment.
l
Be sure to install the valve caps
securely, as these are important
to prevent air pressure leakage
during extreme high speed
riding.
@
CE-10E
CE-12EEAU00684
WARNING
@ This motorcycle is fitted with super
high-speed running tires. The fol-
lowing points must be observed in
order for you to make fully effective
use of these tires.l
Never fail to use the specified
tires in tire replacement. Other
tires may have a danger of
bursting at super high-speeds.
l
New tires have a relatively low
grip on the road surface until
they have been slightly worn.
Therefore, approximately 100 km
should be traveled at normal
speed before any high-speed
riding is done.
l
Before any high-speed runs, the
tires should be warmed-up suf-
ficiently.
l
Always inflate to the correct tire
pressure according to the oper-
ating conditions.
@
FRONT
Manufacturer Size Type
Metzeler 120/70-17 58V ME33
Dunlop 120/70-17 58V K505F
Bridgestone 120/70-17 58V G601
REAR
Manufacturer Size Type
Metzeler 150/70-17 69V ME55A
Dunlop 150/70-17 69V K505
Bridgestone 150/70-17 69V G602
Type
Tire valve TR412
Valve core #9000A (original)

PERIODIC MAINTENANCE AND MINOR REPAIR
6-18
6
EAU00687
WheelsTo ensure maximum performance,
long service, and safe operation, note
the following:l
Always inspect the wheels before
a ride. Check for cracks, bends, or
warpage of the wheels. If any ab-
normal condition exists in a wheel,
consult a Yamaha dealer. Do not
attempt even small repairs to the
wheel. If a wheel is deformed or
cracked, it must be replaced.
l
Tires and wheels should be bal-
anced whenever either one is
changed or replaced. Failure to
have a wheel balanced can result
in poor performance, adverse han-
dling characteristics, and 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 characteristics.
EAU00694
Clutch lever free play
adjustmentThe clutch lever free play should be ad-
justed to 10 ~ 15 mm.
1. Loosen the locknut at the clutch le-
ver.
2. Turn the adjusting bolt at the
clutch lever in direction
a to in-
crease free play or in direction
b
to decrease free play.
3. Tighten the locknut at the clutch
lever.If the specified free play cannot be ob-
tained, proceed with the following
steps.
4. Loosen the locknut at the clutch le-
ver.
5. Turn the adjusting bolt at the
clutch lever in direction
a to loos-
en the cable.
6. Loosen the locknut at the crank-
case side.
7. Turn the adjusting nut at the
crankcase in direction
a to in-
crease free play or in direction
b
to decrease free play.
8. Tighten the locknut at the crank-
case and the clutch lever.1. Locknut
2. Adjusting bolt
c. Free play
1. Locknut
2. Adjusting nut