Suzuki GSF1250 Service Manual

Ignition System: 1H-4
Repair Instructions
Ignition Coil / Plug Cap and Spark Plug Removal
and Installation
B718H11806014
Removal
WARNING
!
The hot engine can burn you.
Wait until the engine is cool enough to touch.
1) Turn the ignition switch OFF.
2) Remove the fuel tank. Refer to “Fuel Tank Removal
and Installation in Section 1G (Page 1G-9)”.
3) Remove the frame head cover. (GSF1250/A) Refer
to “Exterior Parts Removal and Installation in Section
9D (Page 9D-6)”.
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 lb-ft)
1
2
I718H1180009-01
(A)
I718H1180010-02
(A)
I718H1180011-02

Suzuki GSF1250 Specifications

General

Displacement	1255 cc
Bore x Stroke	79.0 mm x 64.0 mm
Compression Ratio	10.5:1
Fuel System	Fuel injection
Transmission	6-speed, constant mesh
Front Suspension	Telescopic, coil spring, oil damped
Rear Suspension	Link type, coil spring, oil damped
Front Brakes	Dual hydraulic disc
Rear Brakes	Single hydraulic disc
Front Tire	120/70ZR17M/C (58W), tubeless
Rear Tire	180/55ZR17M/C (73W), tubeless
Overall Length	2130 mm
Overall Width	790 mm
Seat Height	805 mm
Wheelbase	1485 mm
Fuel Tank Capacity	19.0 L
Starter	Electric
Final Drive	Chain
Ignition	Electronic ignition (transistorized)
Engine Type	4-stroke, liquid-cooled, DOHC
Ground Clearance	135 mm