Suzuki GSX-R750 User Manual

1D-34 Engine Mechanical:
Camshaft Inspection
B838H21406021
Refer to “Engine Top Side Disassembly (Page 1D-25)”.
Refer to “Engine Top Side Assembly (Page 1D-27)”.
Camshaft Identification
The exhaust camshaft has the embossed letters “EX”
and the intake camshaft has the embossed letters “IN”.
Cam Wear
Check the camshaft for wear or damage.
Measure the cam height “a” with a micrometer.
Replace a camshaft if the cams are worn to the service
limit.
Special tool
: 09900–20202 (Micrometer (1/100 mm, 25 – 50
mm))
Cam height “a”
Service limit (IN.): 36.28 mm (1.428 in)
Service limit (EX.): 35.68 mm (1.405 in)
Camshaft Runout
Measure the runout using the dial gauge. Replace the
camshaft if the runout exceeds the limit.
Special tool
(A): 09900–20607 (Dial gauge (1/100 mm, 10
mm))
(B): 09900–20701 (Magnetic stand)
(C): 09900–21304 (V-block (100 mm))
Camshaft runout (IN. & EX.)
Service limit: 0.10 mm (0.004 in)
Camshaft Journal Wear
Inspect the camshaft journal wear in the following
procedures:
1) Determine whether or not each journal is worn down
to the limit by measuring the oil clearance with the
camshaft installed in place.
2) Use the plastigauge to read the clearance at the
widest portion, which is specified as follows.
Special tool
(A): 09900–22301 (Plastigauge (0.025 –
0.076 mm))
(B): 09900–22302 (Plastigauge (0.051 –
0.152 mm))
3) Install each camshaft journal holder to its original
position. Refer to “Engine Top Side Assembly
(Page 1D-27)”.
I837H1140239-01
“a”
I649G1140199-02
(A)
(B)
(C)
I837H1140240-02
(A), (B)
I837H1140241-01

Suzuki GSX-R750 Specifications

General

Engine Type	4-stroke, 4-cylinder, liquid-cooled, DOHC
Displacement	750cc
Compression Ratio	12.5:1
Fuel System	Fuel injection
Front Suspension	Inverted telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Overall Width	710 mm (28.0 in)
Ground Clearance	130 mm (5.1 in)
Seat Height	810 mm (31.9 in)
Curb Weight	190 kg (419 lbs)
Ignition	Electronic ignition (transistorized)
Starter	Electric
Final Drive	Chain
Bore x Stroke	70.0 mm x 48.7 mm
Transmission	6-speed, constant mesh
Rear Brakes	Disc
Front Tires	120/70ZR17M/C (58W)
Rear Tires	180/55ZR17M/C (73W)
Fuel Tank Capacity	17.0 L (4.5 US gallons)
Overall Length	2, 030 mm (79.9 in)
Wheelbase	1390 mm (54.7 in)
Front Brakes	Dual hydraulic disc