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EC300000
REGULAR INSPECTION AND ADJUSTMENTS
MAINTENANCE INTERVALS
The following schedule is intended as a general guide to maintenance and lubrication. Bear in mind
that such factors as weather, terrain, geographical location, and individual usage will alter the
required maintenance and lubrication intervals. If you are a doubt as to what intervals to follow in
maintaining and lubricating your machine, consult your Yamaha dealer.
ENGINE OIL
Replace
Inspect
OIL FILTER ELEMENT, OIL STRAINER
Clean
3
VALVES
Check the valve clearances.
Inspect
Replace
VALVE SPRINGS
Inspect
Replace
VALVE LIFTERS
Inspect
Replace
CAMSHAFTS
Inspect
Replace
TIMING CHAIN SPROCKETS, TIMING
CHAIN
Inspect
Replace
PISTON
Inspect
Clean
Replace
PISTON RING
Inspect
Replace
PISTON PIN
Inspect
Replace
CYLINDER HEAD
Inspect and clean
CYLINDER
Inspect and clean
Replace
CLUTCH
Inspect and adjust
Replace
TRANSMISSION
Inspect
Replace bearing
MAINTENANCE INTERVALS
After
Item
break-in
Every
Every
third race
fifth race
Every
or
or
race
500 km
1,000 km
(300 mi)
(600 mi)
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3 - 1
INSP
ADJ
As re-
Remarks
quired
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The engine must be cold.
Check the valve seats
and valve stems for wear.
●
Check the free length and
the tilt.
●
Check for scratches and
wear.
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Inspect the camshaft sur-
face.
●
Check for wear on the
teeth and for damage.
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Inspect crack
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Remove carbon
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Check ring end gap
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Remove carbon
Change gasket
Inspect score marks
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Inspect wear
Inspect housing, friction
plate, clutch plate and
●
spring
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