2000 YAMAHA XJ900S engine

PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6
EAU02938
Engine oilOil level inspection
1. Place the motorcycle on the cen-
terstand. Warm up the engine for
several minutes.NOTE:@ Be sure the motorcycle is positioned
straight up when checking the oil level.
A slight tilt toward the side can result in
false readings. @
2. With the engine stopped, check
the oil level through the level win-
dow located at the lower part of
the right side crankcase cover.NOTE:@ Wait a few minutes until the oil level
settles before checking. @3. The oil level should be between
the maximum and minimum
marks. If the level is low, fill the en-
gine with sufficient oil to reach the
specified level.Engine oil and oil filter cartridge re-
placement
1. Warm up the engine for several
minutes.
2. Stop the engine. Place an oil pan
under the engine and remove the
oil filler cap.
1. Engine oil level window
2. Maximum level mark
3. Minimum level mark
1. Engine oil filler cap

PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
63. Remove the drain bolt and drain
the oil.4. Remove the oil filter by using an oil
filter wrench.
NOTE:@ An oil filter wrench is available at a
nearby Yamaha dealer. @5. Install the drain bolt and tighten it
to the specified torque.6. Apply a light coat of engine oil to
the O-ring of the new oil filter.
NOTE:@ Make sure the O-ring is seated proper-
ly. @7. Install the new oil filter and tighten
it to the specified torque with an oil
filter wrench.NOTE:@ When installing the oil filter, tighten it to
the proper torque by using a torque
wrench. @
1. Engine oil drain bolt
1. Oil filter cartrige
2. Oil filter wrench
Tightening torque:
Drain bolt:
43 Nm (4.3 m·kg)
1. O-ring

PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6 8. Fill the engine with sufficient oil to
reach the specified level. Install
the oil filler cap and tighten it.
EC000066
CAUTION:@ l
Do not put in any chemical addi-
tives. Engine oil also lubricates
the clutch and additives could
cause clutch slippage.
l
Be sure no foreign material en-
ters the crankcase.
@9. Start the engine and warm it up for
several minutes. While warming
up, check for oil leakage. If oil
leakage is found, stop the engine
immediately and check for the
cause.NOTE:@ After the engine is started, the oil level
indicator light should go off if the oil is at
the specified level. @
EC000067
CAUTION:@ If the indicator light flickers or re-
mains on, immediately stop the en-
gine and consult with a Yamaha
dealer. @
Tightening torque:
Oil filter:
17 Nm (1.7 m·kg)
Recommended oil:
See page 8-1.
Oil quantity:
Total amount:
4.4 L
Periodic oil change:
3.2 L
With oil filter replacement:
3.4 L

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
6-21
6
EAU00742
Brake fluid replacementThe brake fluid should be replaced only
by trained Yamaha service personnel.
Have the Yamaha dealer replace the
following components during periodic
maintenance or when they are dam-
aged or leaking:l
oil seals (every two years)
l
brake hoses (every four years)
EAU02962
Cable inspection and
lubrication
EW000112
WARNING
@ Damage to the outer housing of ca-
bles may lead to internal rusting and
interfere with the cable movement.
Replace damaged cables as soon as
possible to prevent unsafe condi-
tions. @Lubricate the cables and cable ends. If
a cable does not operate smoothly, ask
a Yamaha dealer to replace it.
EAU00773
Throttle cable and grip
lubricationThe throttle twist grip assembly should
be greased at the time that the cable is
lubricated, since the grip must be re-
moved to get at the end of the throttle
cable. After removing the screws, hold
the end of the cable up in the air and
put in several drops of lubricant. With
the throttle grip disassembled, coat the
metal surface of the grip assembly with
a suitable all-purpose grease.
Recommended lubricant:
Engine oil

PERIODIC MAINTENANCE AND MINOR REPAIR
6-22
6
EAU02984
Brake and shift pedal
lubricationLubricate the pivoting parts.
EAU02985
Brake and clutch lever
lubricationLubricate the pivoting parts.
EAU02965
Center and sidestand
lubricationLubricate the pivoting and mating
joints.
Check to see that the center and side-
stand move up and down smoothly.
EW000114
WARNING
@ If the center and/or sidestand does
not move smoothly, consult a
Yamaha dealer. @
Recommended lubricant:
Engine oil
Recommended lubricant:
Engine oil
Recommended lubricant:
Engine oil

PERIODIC MAINTENANCE AND MINOR REPAIR
6-23
6
EAU02939
Front fork inspectionVisual check
EW000115
WARNING
@ Securely support the motorcycle so
there is no danger of it falling over. @Check for scratches or damage on the
inner tube and excessive oil leakage
from the front fork.
Operation check
1. Place the motorcycle on a level
place.
2. Hold the motorcycle in an upright
position and apply the front brake.
3. Push down hard on the handle-
bars several times and check if the
fork rebounds smoothly.
EC000098
CAUTION:@ If any damage or unsmooth move-
ment is found with the front fork,
consult a Yamaha dealer. @
EAU00794
Steering inspectionPeriodically inspect the condition of the
steering. Worn out or loose steering
bearings may be dangerous. Place a
stand under the engine to raise the
front wheel off the ground. Hold the
lower end of the front forks and try to
move them forward and backward. If
any free play can be felt, ask a Yamaha
dealer to inspect and adjust the steer-
ing. Inspection is easier if the front
wheel is removed.
EW000115
WARNING
@ Securely support the motorcycle so
there is no danger of it falling over. @