Maintenance Intervals For Competition Use - Yamaha 2011 WR250FA Owner's Service Manual

MAINTENANCE INTERVALS FOR COMPETITION USE

MAINTENANCE INTERVALS FOR COMPETITION USE
• 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 re-
quired 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.
• Periodic inspection is essential in making full use of the machine performance. The service life of
the parts varies substantially according to the environment in which the machine runs (e.g., rain,
dirt, etc.). Therefore, earlier inspection is required by reference to the list below.
Item
ENGINE OIL
Replace
VALVES
Check the valve clearanc-
es
Inspect
Replace
VALVE SPRINGS
Inspect
Replace
VALVE LIFTERS
Inspect
Replace
CAMSHAFTS
Inspect
Replace
CAMSHAFT SPROCKETS
Inspect
Replace
PISTON
Inspect
Clean
Replace
Every Every
After
Every
third fifth (or
break
race (or 500 1,000
-in
km)
●
● ●
3-4
As re-
quired
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.
It is recommended that the pis-
●
ton pin and ring are also re-
placed at the same time.
Remarks