Suzuki GSF650S User Manual

ENGINE 3-59
• Mate the lower crankcase with the upper crankcase and
tighten the crankshaft bolts to the specified torque and in the
proper tightening sequence.
# Crankcase bolt
(Initial) : 13 N·m (1.3 kgf-m)
(Final) : 23 N·m (2.3 kgf-m)
• Remove the lower crankcase and measure the width of com-
pressed plastigauge using the envelope scale. This measure-
ment should be taken at the widest part of the compressed
plastigauge.
( Crankshaft journal oil clearance
Standard: 0.020 – 0.044 mm
( Crankshaft journal oil clearance
Service Limit: 0.08 mm
• If the width at the widest part of the compressed plastigauge
exceeds the limit, replace the set of bearings with new ones.
Refer to the selection table.
• Check the corresponding crankcase journal I.D. codes (“A” or
“B”)

1, which are stamped on the rear of the upper crank-
case.
• Check the corresponding crankshaft journal O.D. codes (“A”,
“B” or “C”)

2, which are stamped on the crankshaft.
Bearing selection table
Crankshaft O.D.

2
Code ABC
Crankcase
I.D.

1
A Green Black Brown
B Black Brown Yellow

Suzuki GSF650S Specifications

General

Engine Type	4-stroke, 4-cylinder, liquid-cooled, DOHC
Bore x Stroke	65.5 mm x 48.7 mm
Compression Ratio	11.5:1
Fuel System	Fuel injection
Ignition	Electronic ignition (transistorized)
Transmission	6-speed constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Displacement	656 cm³
Front Brakes	Disc
Rear Brakes	Disc
Front Tire	120/70ZR17
Rear Tire	160/60ZR17
Fuel Tank Capacity	19 liters
Seat Height	790 mm