Suzuki GSF1250 Service Manual

1D-24 Engine Mechanical:
Engine Top Side Disassembly
B718H11406006
CAUTION
!
Identify the position of each removed part.
Organize the parts in their respective groups
(e.g., intake, exhaust) so that they can be
reinstalled in their original positions.
1) Remove the seat (1) and disconnect the battery (–)
lead wire.
2) Remove the fuel tank (2). Refer to “Fuel Tank
Removal and Installation in Section 1G (Page 1G-
9)”.
3) Remove the frame head covers (3) (GSF1250/A) or
cowling (GSF1250S/SA).
Refer to “Exterior Parts Removal and Installation in
Section 9D (Page 9D-6)”.
4) Drain engine coolant. Refer to “Cooling System
Inspection in Section 0B (Page 0B-12)”.
5) Disconnect the water hoses and remove the
thermostat connector (4) along with bracket.
Ignition Coil / Plug Cap
1) Disconnect all lead wire couplers from ignition coil/
plug caps.
2) Remove the ignition coil caps. Refer to “Ignition Coil /
Plug Cap and Spark Plug Removal and Installation in
Section 1H (Page 1H-4)”.
PAIR System
1) Disconnect the PAIR hoses and lead wire coupler.
2) Remove the PAIR control solenoid valve (1).
3) Remove the PAIR reed valve covers (2) and reed
valves.
Cylinder Head Cover
Remove the cylinder head cover (1) and its gasket.
2
1
3
I718H1140001-02
4
I718H1140002-01
I718H1140007-01
1
I718H1140008-01
2 2
I718H1140009-01
1
I718H1140010-01

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