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Remove the spark plug hole seal ring [1] and cylinder
head cover packing [2].
[2]
Remove the spark plug 2-23.
Remove the crankshaft hole cap [1] and O-ring [2].
[1]
[1]/[2]
Turn the crankshaft clockwise to align the "T" mark [1] on
the primary drive gear with the index mark [2] on the right
crankcase cover.
Check the decompressor weight [3] position.
• If the weight is in position as shown, the piston is TDC
(Top Dead Center) on the compression stroke.
If the weight is opposite, the piston is TDC on the
exhaust stroke. Rotate the crankshaft clockwise one
full turn and match up the "T" mark on the primary
drive gear with the index mark on the right crankcase
cover again.
[2]
[1]
Check that the index lines on the cam sprocket align with
the camshaft holder mating surface.
Maintenance
[3]
Align
2-25
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