Service Manual

PERIODIC MAINTENANCE 2-15
Periodic Maintenance Procedures
•
When lapping is completed, wash all parts in solvent to
remove lapping compound. Dry the parts thoroughly.
•
Note the position of the lapping mark on the valve face.
The lapping mark should appear on or near the center of
the valve face.
•
When the engine is assembled, be sure to adjust the valve
clearances (see Valve Clearance Adjustment).
Lubrication System
Engine Oil Level Inspection
•
Place the engine on a level surface.
•
Remove the oil filler cap [A] and wipe its dipstick [B] with
a clean cloth.
•
Insert the dipstick into tube [C] without screwing it in, then
check the oil level.
•
The oil level should be the operating range (grid area) [D]
on the dipstick.
If the oil level is “ADD” range [E], add enough engine oil
to bring oil level to the operating range.
CAUTION
Do not add more oil above the operating range. Ex-
cess oil will cause a smoking condition.
○
Use the same type and make of oil that is already in the
engine.
NOTE
○
If the engine oil type and make are unknown, use any
brand of the specified oil to top up the level in preference
to running the engine with the oil level low. Then at your
earliest convenience, change the oil completely.
If the oil level is “FULL” range [F], drain the ex
cess oil by
loosening the drain plug.
Engine Oil Change
•
Change the oil after first 8 hours of operation. Thereafter
change oil every 100 hours.
•
Start and warm up the engine to drain the oil easily.
•
Stop the engine.
•
Place the engine on a level surface.
•
Place a suitable container under the engine.
•
Remove the oil drain plug [A] and drain the oil.
WARNING
Be careful of hot oil when draining. It may be hot
enough to burn you severely.
•
Replace the O-ring [B] with a new one.
•
Apply grease to the O-ring.
•
Install the oil drain plug with the O-ring and tighten it.
Torque - Engine Oil Drain Plug: 6.9 N·m (0.70 kgf·m, 61
in·lb)