Yamaha WR250FM service manual Insp ADJ, Maintenance Intervals

MAINTENANCE INTERVALS

EC300000

REGULAR INSPECTION AND ADJUSTMENTS

MAINTENANCE INTERVALS

INSP

ADJ

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.

Item	After	Every	Every third	Every fifth	As re-	Remarks
	break-in	race	(or	(or	quired
			500 km)	1,000 km)
ENGINE OIL
Replace
Inspect
VALVES
Check the valve clearances						The engine must be cold.
Inspect						Check the valve seats
Replace						and valve stems for wear.
VALVE SPRINGS
Inspect						Check the free length and
Replace						the tilt.
VALVE LIFTERS
Inspect						Check for scratches and
Replace						wear.
CAMSHAFTS						Inspect the camshaft sur-
Inspect						face.
Replace						Inspect the decompres-
						sion system.
TIMING CHAIN SPROCKETS, TIMING
CHAIN
Inspect						Check for wear on the
Replace						teeth and for damage.
PISTON
Inspect						Inspect crack
Clean						Inspect carbon deposits
Replace						and eliminate them.
PISTON RING
Inspect						Check ring end gap
Replace
PISTON PIN
Inspect
Replace
CYLINDER HEAD						Inspect carbon deposits
Inspect and clean						and eliminate them.
						Change gasket
CYLINDER
Inspect and clean						Inspect score marks
Replace						Inspect wear
CLUTCH						Inspect housing, friction
Inspect and adjust						plate, clutch plate and
Replace						spring
TRANSMISSION
Inspect
Replace bearing

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