Page 85 of 132

PERIODIC MAINTENANCE AND MINOR REPAIR
7-12
7
EAU01703
Engine oil and oil filter
cartridge The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter car-
tridge replaced at the intervals speci-
fied in the periodic maintenance and
lubrication chart.
To check the engine oil level
1. Place the motorcycle on a level
surface and hold it in an upright
position.NOTE:Make sure that the motorcycle is posi-
tioned straight up when checking the oil
level. A slight tilt to the side can result in
a false reading. @2. Start the engine, warm it up for
several minutes, and then turn it
off.3. Wait a few minutes until the oil set-
tles, and then check the oil level
through the check window located
at the bottom-right side of the
crankcase.
NOTE:@ The engine oil should be between the
minimum and maximum level marks. @4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.To change the engine oil (with or
without oil filter cartridge replace-
ment)
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Place an oil pan under the engine
to collect the used oil.1. Engine oil level check window
2. Maximum level mark
3. Minimum level mark
1. Engine oil filler cap
E_5jc.book Page 12 Monday, January 22, 2001 12:12 PM
Page 86 of 132
PERIODIC MAINTENANCE AND MINOR REPAIR
7-13
73. Remove the engine oil filler cap
and drain bolt to drain the oil from
the crankcase.
NOTE:@ Skip steps 4–6 if the oil filter cartridge is
not being replaced. @
4. Remove the oil filter cartridge with
an oil filter wrench.NOTE:@ An oil filter wrench is available at a
Yamaha dealer. @5. Apply a thin coat of engine oil to
the O-ring of the new oil filter
cartridge.NOTE:@ Make sure that the O-ring is properly
seated. @
6. Install the new oil filter cartridge,
and then tighten it to the specified
torque with a torque wrench.
7. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
1. Engine oil drain bolt
1. Engine oil filter cartridge
1. Torque wrench
2. Oil filter wrench
Tightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kgf)
Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
7-14
7 8. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil filler
cap.
EC000072
CAUTION:@ l
In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives with
the oil or use oils of a higher
grade than “CD”. In addition, do
not use oils labeled “ENERGY
CONSERVING II” or higher.
l
Make sure that no foreign mate-
rial enters the crankcase.
@9. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.NOTE:@ After the engine is started, the engine
oil level warning light should go off if the
oil level is sufficient. @
EC000067
CAUTION:@ If the oil level warning light flickers
or remains on, immediately turn the
engine off and have a Yamaha deal-
er check the vehicle. @10. Turn the engine off, and then
check the oil level and correct it if
necessary. Recommended engine oil:
See page 9-1.
Oil quantity:
Without oil filter cartridge
replacement:
3.5 L
With oil filter cartridge
replacement:
3.7 L
Total amount (dry engine):
4.3 L
E_5jc.book Page 14 Monday, January 22, 2001 12:12 PM
Page 88 of 132

PERIODIC MAINTENANCE AND MINOR REPAIR
7-15
7
EAU01220
Final gear oil The final gear case must be checked
for oil leakage before each ride. If any
leakage is found, have a Yamaha deal-
er check and repair the motorcycle. In
addition, have a Yamaha dealer
change the final gear oil at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU03974
Checking the coolant level The coolant level should be checked as
follows before each ride. In addition,
the coolant must be changed at the in-
tervals specified in the periodic mainte-
nance and lubrication chart.
1. Place the motorcycle on a level
surface and hold it in an upright
position.
2. Remove panel A. (See page 7-9
for panel removal and installation
procedures.)NOTE:_ l
The coolant level must be checked
on a cold engine since the level
varies with engine temperature.
l
Make sure that the motorcycle is
positioned straight up when
checking the coolant level. A slight
tilt to the side can result in a false
reading.
_
3. Check the coolant level in the
coolant reservoir.NOTE:_ The coolant should be between the
minimum and maximum level marks. _
1. Final gear oil filler bolt
2. Final gear oil drain bolt
1. Coolant reservoir
2. Maximum level mark
3. Minimum level mark
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PERIODIC MAINTENANCE AND MINOR REPAIR
7-16
7 4. If the coolant is at or below the
minimum level mark, remove the
rider seat (See page 3-15 for rider
seat removal and installation pro-
cedures.), open the reservoir cap,
add coolant to the maximum level
mark, and then close the reservoir
cap and install the rider seat.
EC000080
CAUTION:_ l
If coolant is not available, use
distilled water or soft tap water
instead. Do not use hard water
or salt water since it is harmful
to the engine.
l
If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the engine may not be
sufficiently cooled and the cool-
ing system will not be protected
against frost and corrosion.
l
If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possible,
otherwise the effectiveness of
the coolant will be reduced.
_
EW000067
WARNING
_ Never attempt to remove the radia-
tor cap when the engine is hot. _5. Install the panel.
NOTE:_ l
The radiator fan is automatically
switched on or off according to the
coolant temperature in the radia-
tor.
l
If the engine overheats, see page
7-39 for further instructions.
_
1. Coolant reservoir cap
Coolant reservoir capacity:
0.84 L
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PERIODIC MAINTENANCE AND MINOR REPAIR
7-19
77. Install the air filter element by fit-
ting the projection on the air filter
element into the holder in the air
filter case, then tightening the
screws.
EC000082*
CAUTION:@ l
Make sure that the air filter ele-
ment is properly seated in the
air filter case.
l
The engine should never be op-
erated without the air filter ele-
ment installed, otherwise the
pistons and/or cylinders may
become excessively worn.
@
8. Install the air filter case cover by
installing the bolts.
9. Install the air filter by pushing it
onto the air filter joint, then tighten-
ing the air filter joint clamp screw.
10. Install the air filter case by install-
ing the bolts.
11. Install the cowlings.NOTE:@ Make sure that the air filter case drain
hose is routed as shown. @
EAU00630
Adjusting the carburetors The carburetors are important parts of
the engine and require very sophisti-
cated adjustment. Therefore, most car-
buretor adjustments should be left to a
Yamaha dealer, who has the neces-
sary professional knowledge and expe-
rience. The adjustment described in
the following section, however, may be
serviced by the owner as part of routine
maintenance.
EC000095
CAUTION:_ The carburetors have been set and
extensively tested at the Yamaha
factory. Changing these settings
without sufficient technical knowl-
edge may result in poor perfor-
mance of or damage to the engine. _
1. Air filter case drain hose
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PERIODIC MAINTENANCE AND MINOR REPAIR
7-20
7
EAU01168
Adjusting the engine idling
speed The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.NOTE:_ A diagnostic tachometer is needed to
make this adjustment. _1. Attach the tachometer to the spark
plug lead.
2. Start the engine and warm it up for
several minutes at 1,000–2,000 r/min
while occasionally revving it to 4,000–
5,000 r/min.NOTE:_ The engine is warm when it quickly re-
sponds to the throttle. _3. Check the engine idling speed
and, if necessary, adjust it to spec-
ification by turning the throttle stop
screw. To increase the engine
idling speed, turn the screw in di-
rection
a. To decrease the engine
idling speed, turn the screw in di-
rection
b.
NOTE:_ If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment. _
1. Throttle stop screw
Engine idling speed:
950–1,050 r/min
E_5jc.book Page 20 Monday, January 22, 2001 12:12 PM
Page 94 of 132
PERIODIC MAINTENANCE AND MINOR REPAIR
7-21
7
EAU00635
Adjusting the throttle cable
free play The throttle cable free play should
measure 4–6 mm at the throttle grip.
Periodically check the throttle cable
free play and, if necessary, have a
Yamaha dealer adjust it.
EAU00637
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.
EAU03975
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.
a. Throttle cable free playE_5jc.book Page 21 Monday, January 22, 2001 12:12 PM