3 - 1
INSP
ADJ
MAINTENANCE INTERVALS
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.
ItemAfter
break-inEvery
raceEvery
third
raceEvery
fifth
raceAs re-
quiredRemarks
PISTON
Inspect and clean
Replace
Inspect crack
Inspect carbon deposits
and eliminate them
PISTON RING
Inspect
Replace
Check ring end gap
PISTON PIN, SMALL END BEARING
Inspect
Replace
CYLINDER HEAD
Inspect and clean
Retighten
Inspect carbon deposits
and eliminate them
Check gasket
CYLINDER
Inspect and clean
Replace
Inspect score marks
Inspect wear
CLUTCH
Inspect and adjust
Replace
Inspect housing, friction
plate, clutch plate and
spring
TRANSMISSION
Replace oil
Inspect
Replace bearing
Yamalube 4 (10W-30) or
SAE 10W-30 SE motor oil
SHIFT FORK, SHIFT CAM, GUIDE BAR
Inspect
Inspect wear
ROTOR NUT
Retighten
KICK SHAFT
Inspect idle gear
Replace
EXHAUST PIPE, SILENCER
Inspect
Clean
CRANK
Inspect and clean
CARBURETOR
Inspect, adjust and clean
SPARK PLUG
Inspect and clean
Replace
DRIVE CHAIN
Lubricate, slack, alignment
Replace
Chain slack: 35 ~ 45 mm
(1.4 ~ 1.8 in)
