Removing The Cylinder Head - Yamaha YFM45FXV Supplementary Service Manual

CYLINDER HEAD

REMOVING THE CYLINDER HEAD

1. Align:
• "T" mark 1
(with stationary pointer)
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a. Turn the crankshaft counterclockwise with a
wrench.
b. Align the "T" mark 1 on the rotor with the
stationary pointer 2 on the A.C. magneto
cover. When the "T" mark is aligned with the
stationary pointer, the piston is at the Top
Dead Center (T.D.C.).
NOTE:
• When the piston is at the Top Dead Center
(T.D.C.) on the compression stroke, there
should be clearance between the valve stem
tips and their respective rocker arm adjusting
screws.
• If there is no clearance, rotate the crankshaft
counterclockwise one turn.
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2. Loosen:
• camshaft sprocket bolt 1
NOTE:
When loosening the bolt, use a wrench 2 to
hold the collar.
3. Loosen:
• timing chain tensioner cap bolt
4. Remove:
• timing chain tensioner
• camshaft sprocket
NOTE:
• Fasten a safety wire to the timing chain to
prevent it from falling into the crankcase.
• When removing the camshaft sprocket, it is
not necessary to separate the timing chain.
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ENG
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