Suzuki GSF650 Service Manual

1B-2 Emission Control Devices:
Crankcase Emission Control System Description
B817H21201002
The engine is equipped with a PCV system to prevent discharging crankcase emissions into the atmosphere. Blow-by
gas in the engine is constantly drawn into the crankcase, which is returned to the combustion chamber through the
PCV (breather) hose, air cleaner and throttle body.
1
2
“A”
“B”
“C”
“D”
I717H1120015-02
1. Air cleaner box “A”: Fresh air “C”: Blow-by gas
2. Oil return “B”: Fuel/Air mixture “D”: Engine oil

Suzuki GSF650 Specifications

General

Displacement	656 cc
Bore x Stroke	65.5 mm x 48.7 mm
Compression Ratio	11.5:1
Fuel System	Fuel injection
Ignition	Electronic ignition (transistorized)
Starter	Electric
Transmission	6-speed, constant mesh
Final Drive	Chain
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Front Tire	120/70ZR17M/C (58W), tubeless
Rear Tire	160/60ZR17M/C (69W), tubeless
Overall Length	2, 130 mm
Rear Brakes	Disc brake
Fuel Tank Capacity	19.0 L
Wheelbase	1, 470 mm
Seat Height	790 mm
Ground Clearance	135 mm
Engine Type	4-stroke, liquid-cooled, DOHC, 4-cylinder