Suzuki GSF1250 Service Manual

Engine Mechanical: 1D-51
Piston Ring Removal and Installation
B718H11406022
Removal
1) Draw out the piston pin and remove the piston. Refer
to “Engine Top Side Disassembly (Page 1D-24)”.
2) Carefully spread the ring opening with your thumbs
and then push up the opposite side of the 1st ring (2)
to remove it.
NOTE
Do not expand the piston ring excessively
since it is apt to be broken down.
3) Remove the 2nd ring and oil ring in the same
manner.
Installation
NOTE
• When installing the piston ring, be careful
not to damage the piston.
• Do not expand the piston ring excessively
since it is apt to be broken down.
1) Install the piston rings in the order of the oil ring,
second ring and top ring.
a) The first member to go into the of the oil ring
groove is a spacer (1).
After placing the spacer, fit the two side rails (2).
CAUTION
!
When installing the spacer, be careful so that
the both edges are not overlapped.
b) Install the 2nd ring (3) and 1st ring (4) to piston.
NOTE
1st ring (4) and 2nd ring (3) differ in shape.
NOTE
Face the side with the stamped mark “C”
upward when assembling.
I718H1140142-01
1
2
2
I718H1140143-02
“A”: INCORRECT “B”: CORRECT
A
B
“A”
“B”
I705H1140170-02
3
4
I718H1140144-01
IN
N
“C”
“C”
3
4
I718H1140145-02

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