Suzuki GSX-R750, Service Manual

Page: 140 / 495

3-92 ENGINE
CAMSHAFT
• Turn the crankshaft clockwise with the box wrench and align the
line
A
on the starter clutch with the index mark
B
of the valve
timing inspection hole while keeping the cam chain pulled up-
ward.
#
Pull the cam chain upward, or the chain will be caught
between crankcase and cam drive sprocket.
#
To adjust the camshaft timing correctly, be sure to align
the line
A
with the index mark
B
and hold this position
when installing the camshafts.
• The cam shafts are identified by the embossed letters.
• Before replacing the camshafts on cylinder head, apply molyb-
denum oil solution to their journals and cam faces.
• Apply engine oil to the camshaft journal holders.
O O
O O
O
MOLYBDENUM OIL SOLUTION
NOTE:
Before installing the camshaft, check that the tappets are installed
correctly.
• Pull the cam chain lightly.
• The exhaust camshaft sprocket has an arrow marked “1”
A
.
Turn the exhaust camshaft so that the arrow is aligned with the
gasket surface of the cylinder head.
• Engage the cam chain with the exhaust camshaft sprocket.
• Bind the cam chain and the sprocket with a proper wire clamp
1
to prevent the cam chain disengagement while installing the
camshaft journal holders.
• The other arrow marked “2”
B
should now be pointing straight
up. Starting from the roller pin that is directly above the arrow
marked “2”
B
, count out 14 roller pins (from the exhaust cam-
shaft side going towards the intake camshaft side).