Removing The Cylinder Head - Yamaha XT250X Service Manual

EAS24130

REMOVING THE CYLINDER HEAD

1. Disconnect:
Wire harness
G
NOTE:
Disconnect the wire harness from the T-stud of
vehicle frame.
2. Align:
Mark "a" of the camshaft sprocket
G
(with mark "b" of the cylinder head)
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Turn the crankshaft counterclockwise.
b. When the piston is in the compression stroke,
align camshaft sprocket mark "a" with cylin-
der head mark "b". (Compression stroke
TDC)
NOTE:
Make sure that generator rotor mark "c" aligns
with generator rotor cover mark "d".
LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
3. Loosen:
Camshaft sprocket bolt
G
NOTE:
Tighten the generator rotor bolts but loosen the
camshaft sprocket bolts using a wrench.
4. Remove:
Timing chain tensioner
G
(along with the gasket)
Camshaft sprocket plate
G
Camshaft sprocket
G
NOTE:
To prevent the timing chain from falling into the
crankcase, fasten it with a wire.
5. Remove:
Cylinder head
G
NOTE:
Loosen the cylinder head bolts in the correct
G
sequence as shown.
Loosen each cylinder head bolt for a half turn
G
at a time. When all cylinder head bolts are fully
loosened, remove them.
5-8
CYLINDER HEAD