Suzuki GSF650 Service Manual

Ignition System: 1H-3
Repair Instructions
Ignition Coil / Plug Cap and Spark Plug Removal
and Installation
B817H21806001
Removal
WARNING
!
The hot engine can burn you.
Wait until the engine is cool enough to touch.
1) Turn the ignition switch OFF position.
2) Remove the fuel tank. Refer to “Fuel Tank Removal
and Installation in Section 1G (Page 1G-9)”.
3) Remove the frame head cover. Refer to “Exterior
Parts Removal and Installation (GSF650/S/A/SAK7)
in Section 9D (Page 9D-6)”. (GSF650)
4) Disconnect all lead wire couplers (1) from ignition
coil/plug caps.
CAUTION
!
Disconnect the lead wire coupler before
removing the ignition coil/plug cap to avoid
lead wire coupler damage.
5) Remove the ignition coils/plug caps (2).
CAUTION
!
• Do not pry up the ignition coil/plug cap
with a screw driver or a bar to avoid its
damage.
• Be careful not to drop the ignition coil/plug
cap to prevent short/open circuit.
6) Remove the spark plugs with a spark plug wrench.
Special tool
(A): 09930–10121 (Spark plug wrench set)
Installation
Install the spark plugs in the reverse order of removal.
Pay attention to the following points:
• Screw the spark plugs into the cylinder head with
fingers, and then tighten them to the specified torque.
CAUTION
!
Do not cross thread or over tighten the spark
plug, or such an operation will damage the
aluminum threads of the cylinder head.
Special tool
(A): 09930–10121 (Spark plug wrench set)
Tightening torque
Spark plug: 11 N·m (1.1 kgf-m, 8.0 lbf-ft)
1
2
I717H1180001-01
(A)
I717H1180002-02
(A)
I717H1180003-02

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