3-5
INSP
ADJ
E
POWER UNIT
6. Install:
● Engine oil filler cap
7. Check:
● Engine oil level
Refer to “Engine oil level”.
NOTE:
● Run the engine for several minutes, turn it
off, and then check the engine oil level.
● If the engine oil is still not at the proper
level, add or drain as needed.
Valve clearance adjustment
NOTE:
Valve clearance adjustment should be
made on a cold engine, at room tempera-
ture.
1. Measure:
● Intake valve clearance a
● Exhaust valve clearance b
Use feeler gauge.
Out of specification → Adjust.
Valve clearance:
Intake: 0.2 ± 0.05 mm
(0.008 ± 0.002 in)
Exhaust: 0.3 ± 0.05 mm
(0.012 ± 0.002 in)
Measurement steps:
● Disconnect the fuel hoses 1, ignition
coil leads and spark plug leads 2.
● Remove the cylinder head cover.
● Turn the flywheel magneto and align
mark “ ” 3 on the driven sprocket
with mark “ ” 4 on the cylinder
block.
● Measure the valve clearance using the
feeler gauge for cylinder #1.
● Align mark “●” 5 on the driven
sprocket with mark “ ” 4 on the cyl-
inder block and then measure the
valve clearance for cylinder #2.
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