Yamaha WR250F Manuel D'atelier Du Proprietaire page 192

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.
Item
ENGINE OIL
Replace
Inspect
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
SHIFT FORK, SHIFT CAM, GUIDE BAR
Inspect
All manuals and user guides at all-guides.com
MAINTENANCE INTERVALS
After Every
break-in race
3 - 1
Every third Every fifth
As
(or (or
required
500 km) 1,000 km)
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.
Inspect the camshaft
surface.
Inspect the decompression
system.
Check for wear on the teeth
and for damage.
Inspect crack
Inspect carbon deposits and
eliminate them.
Check ring end gap
Inspect carbon deposits and
eliminate them.
Change gasket
Inspect score marks
Inspect wear
Inspect housing, friction
plate, clutch plate and spring
Inspect wear
INSP
ADJ
Remarks