67C3K11 5-2
1
2
3
4
5
6
7
8
9
NOTE:
Because the Prime Start operates when the
engine is started, the engine idle speed will
be above specification. Therefore, measure
the oil pressure after the engine has been
warmed up.
3. Measure the oil pressure. If out of specifi-
cation, check the oil pump and oil
strainer, and for oil leakage.
NOTE:
The actual oil pressure may vary depending
the temperature and viscosity of the engine
oil being used.
Checking the valve clearance
NOTE:
Measure the valve clearances when the
engine is cold.
1. Remove the manual starter and driven
sprocket cover. (M and W model)
Remove the flywheel magnet cover. (E
model)
2. Disconnect the ignition coil couplers and
spark plug caps, and then remove the
spark plugs.
3. Disconnect the fuel hoses 1 and blowby
hose 2, and then remove the fuel pump
3 and cylinder head cover 4.
4. Turn the flywheel magnet clockwise and
align the “1 ” mark a on the driven
sprocket 5 with the “” mark b on the
cylinder head.
5. Measure the intake and exhaust valve
clearances for cylinder #1. Adjust if out of
specification.
Oil pressure (reference data):
210 kPa (2.1 kgf/cm
2
, 30.5 psi) at
52 °C (126 °F) with SL 10W-30
engine oil and at engine idle speed
S67C5003
2
4
1
3
Valve clearance:
Intake c:
0.20
± 0.05 mm (0.008 ± 0.002 in)
Exhaust d:
0.30
± 0.05 mm (0.012 ± 0.002 in)
S67C5004
5
a
b
S67C5005
c
d
EX IN
EX IN
#1
#2
#3
Power unit (check and adjustment)
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