Yamaha VMX12H, Supplementary Service Manual

Page: 197 / 405

ENGINE ASSEMBLY AND ADJUSTMENT
4.
Install:
Camshafts
By the following installation steps.
t
instal lation steps
:
the mark on the flywheel
with the stationary pointer on the crank-
case cover use
32
mm wrench.
Never turn the flywheel installing bolt.
Rotating the bolt may loosen it, causing
the rotor
to
fall out.
not turn the crankshaft during the cam-
shafts installation.
the cam chain sprockets onto the
camshafts.
VOTE:
sure the "REAR" mark on the cam
sprockets face away from the "IN"
nark and
"EX" mark
on the camshafts.
engine
oil to the camshaft bearing
surfaces.
Install the
"IN"
marked camshaft onto the
intake side and
"EX" marked camshaft onto
the exhaust side.
the camshafts by hand
so
that the
timing markes small hole) on the
camshaft face upward.
Install the dowel pins into the cam caps.
the cam caps
(Nos.
and
4)
onto
NOTE:
not install
No. 2 intake and No. 2
ex.
haust cam caps a t this stage.
numbers are punched on the cam-
shaft caps in increments from right t o
left.
the camshaft.