Suzuki GSX1200 1999 User Manual

ENGINE 3-33
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
HH
HH
H
Service Limit
Intake cams Exhaust cams
33.28 mm 32.35 mm

Suzuki GSX1200 1999 Specifications

General

Displacement	1157 cc
Bore x Stroke	79.0 mm x 59.0 mm
Compression Ratio	9.5:1
Ignition	Electronic ignition (Transistorized)
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Front Brakes	Dual hydraulic disc
Rear Brakes	Single hydraulic disc
Front Tire	120/70 ZR17
Rear Tire	180/55 ZR17
Starting	Electric
Engine Type	4-stroke, 4-cylinder, DOHC
Fuel System	Mikuni BSR36SS carburetors
Transmission	5-speed
Rear Suspension	Link-type, coil spring, oil damped
Ground Clearance	135 mm
Seat Height	790 mm