Removing The Cylinder Head - Yamaha YBR125ED 2005 Service Manual

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CYLINDER HEAD
EAS00225

REMOVING THE CYLINDER HEAD

1. Align:
• "I" mark a on the A.C. magneto rotor
(with the stationary pointer b on the A.C.
magneto rotor cover)
M MMM M MMM M M MMM
a. Turn the crankshaft counterclockwise.
b. When the piston is at TDC on the compres-
sion stroke, align the "I" mark c on the
camshaft sprocket with the stationary
pointer d on the cylinder head.
L LLL L LLL L L LLL
2. Loosen:
• camshaft sprocket bolt 1
NOTE:
While holding the A.C. magneto rotor nut with
a wrench, remove the bolt.
3. Loosen:
• timing chain tensioner cap bolt
4. Remove:
• timing chain tensioner
(along with the gasket)
• camshaft sprocket
• timing chain
NOTE:
_
To prevent the timing chain from falling into the
crankcase, fasten it with a wire.
5. Remove:
• cylinder head
NOTE:
_
• Loosen the bolts in the proper sequence as
shown.
• Loosen each bolts 1/2 of a turn at a time.
After all of the bolts are fully loosened,
remove them.
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ENG
M M MMM M M MMM M
L L LLL L L LLL L
M MMM M MMM
L LLL L LLL