Suzuki GSF650 Service Manual

Emission Control Devices: 1B-1
Engine
Emission Control Devices
Precautions
Precautions for Emission Control Devices
B817H21200001
Refer to “General Precautions in Section 00 (Page 00-1)”.
General Description
Fuel Injection System Description
B817H21201001
GSF650 motorcycles are equipped with a fuel injection system for emission level control. This fuel injection system is
precision designed, manufactured and adjusted to comply with the applicable emission limits. With varying engine
conditions, all of the fuel injection volumes are precisely controlled by the programmed injection maps in the ECM to
reduce CO, NOX and HC. Adjusting, interfering with, improper replacement, or resetting of any of the fuel injection
components may adversely affect injection performance and cause the motorcycle to exceed the exhaust emission
level limits.
1
2
3
5
6
4
7
“A”
“B”
“C”
8
I718H1170001-02
1. Fuel tank 5. Fuel delivery pipe “A”: Before-pressurized fuel
2. Fuel pump 6. Fuel pressure regulator “B”: Pressurized fuel
3. Fuel mesh filter 7. Fuel filter (For high pressure) “C”: Relieved fuel
4. Fuel feed hose 8. Fuel injector

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