Camshaft - Suzuki GSX1200 1999 Service Manual

CAMSHAFT

Both camshafts should be checked for runout and also for wear of
cams and journals if the engine has been noted as giving abnor-
mal noise or vibration or lack power output. Any of these condi-
tions may be caused by camshafts worn down or distorted to the
service limit.
The exhaust camshaft can be distinguished from that of the in-
take by the embossed letters "EX" (for exhaust) as against letters
"IN" (for intake).
Similarly, the right end can be distinguished by the notch from the
left end.
CAM WEAR
Worn-down cams are often the cause of mistimed valve operation
resulting in reduced power output.
The limit of cam wear is specified for both intake and exhaust
cams in terms of cam height H, which is to be measured with a
micrometer. Replace camshafts if found worn down to the limit.
! !
! ! 09900-20202: Micrometer (25 – 50 mm) !
% %
% % Cam height H H H H H %
Service Limit
Intake cams
33.28 mm
Exhaust cams
32.35 mm
ENGINE 3-33