Removing The Cylinder Head - Yamaha YXR70FX Service Manual

d
c
1
CYLINDER HEAD
EBS00220

REMOVING THE CYLINDER HEAD

a
1. Align:
• "I" mark on the AC magneto rotor
(with the stationary pointer on the AC mag-
b
neto cover)
M MMM
a. Turn the crankshaft counterclockwise.
b. When the piston is at the top dead center
(TDC) on the compression stroke, align the
"I" mark a on the AC magneto rotor with
the stationary pointer b on the AC magneto
cover.
TIP:
To position the piston at top dead center (TDC)
on the compression stroke, align the "I" mark
c on the camshaft sprocket with the stationary
pointer d on the cylinder head, as shown in
the illustration.
L LLL
2. Loosen:
• camshaft sprocket bolts 1
• decompressor assembly bolts 2
TIP:
While holding the AC magneto rotor nut with a
2
wrench, loosen the camshaft sprocket bolts
and decompressor assembly bolts.
3. Loosen:
• timing chain tensioner cap bolt
4. Remove:
• timing chain tensioner
(along with the gasket)
• camshaft sprocket
• timing chain
TIP:
_
To prevent the timing chain from falling into the
crankcase, fasten it with a wire.
4 - 14
ENG
M MMM M M MMM M M MMM M M MMM
L LLL L L LLL L L LLL L L LLL
M M MMM M MMM
L L LLL L LLL