maintenance schedule YAMAHA YZ85 2003 Owners Manual

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)