CAMSHAFTS
5-26
• O-ring
Damage/wear → Replace the oil seal and O-
ring as a set.
EAS23980
CHECKING THE DECOMPRESSION SYSTEM
1. Check:
• Decompression system
NOTE:
• Check the decompression system while the
decompression push rod is installed in the
camshaft.
• Check that the decompression pin “1” projects
from the camshaft.
• Check that the decompression push rod “2”
moves smoothly.
2. Check:
• Decompression push rods
Bends/damage → Replace.
EAS23990
CHECKING THE OIL DELIVERY PIPE
1. Check:
• Oil delivery pipe
Damage → Replace.
Obstruction → Wash and blow out with com-
pressed air.
• O-rings
Damage/wear → Replace.
EAS24030
INSTALLING THE CAMSHAFTS
1. Install:
• Camshafts
(to the camshaft cover)
NOTE:
• Lubricate molybdenum disulfide oil onto the
camshaft journals and lobes.
• Align the punch mark “a” on the rear cylinder
camshaft with the punch mark “b” on the front
cylinder camshaft.
2. Install:
• Camshaft cover “1”
(along with the camshafts)
• Camshaft oil delivery pipe “2”
NOTE:
Tighten the camshaft cover bolts in stages and
in a crisscross pattern.
3. Install:
• Front cylinder camshaft end cover “1”
NOTE:
• Install the front cylinder camshaft end cover “1”
with its punch marks “a” aligned vertically.
• Finger-tighten the bolts.
4. Install:
• Straight keys
• Camshaft drive gear “1”
• Camshaft driven gear “2”
NOTE:
• Cover the crankcase hole with a clean rag “3”
to prevent the straight keys from falling into the
crankcase.
a
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