Suzuki GSF1250 Service Manual

1F-18 Engine Cooling System:
Specifications
Service Data
B718H11607001
Thermostat + Radiator + Fan + Coolant
Tightening Torque Specifications
B718H11607002
NOTE
The specified tightening torque is also described in the following.
“Water pump Components (Page 1F-12)”
“Water Pump Construction (Page 1F-12)”
Reference:
For the tightening torque of fastener not specified in this section, refer to “Tightening Torque Specifications in Section
0C (Page 0C-7)”.
Item Specification Note
Thermostat valve opening temperature Approx. 82 °C (180 °F) —
Thermostat valve lift 8 mm (0.31 in) and over at 95 °C (203 °F) —
ECT sensor resistance
20 °C
(68 °F)
Approx. 2.45 kΩ —
50 °C
(122 °F)
Approx. 0.811 kΩ —
80 °C
(176 °F)
Approx. 0.318 kΩ —
110 °C
(230 °F)
Approx. 0.142 kΩ —
Radiator cap valve opening pressure
93 – 123 kPa
(0.93 – 1.23 kgf/cm
2
, 13.2 – 17.5 psi)
—
Cooling fan operating temperature
OFF→ON Approx. 105 °C (221 °F) —
ON→OFF Approx. 100 °C (212 °F) —
Engine coolant type
Use an antifreeze/coolant compatible with aluminum
radiator, mixed with distilled water only, at the ratio of 50:50.
—
Engine coolant
Reserve tank
side
Approx. 250 ml
(0.3/0.2 US/lmp qt)
—
Engine side
Approx. 3 000 ml
(3.2/2.6 US/lmp qt)
—
Fastening part
Tightening torque
Note
N⋅mkgf-mlb-ft
Thermostat connector bolt 10 1.0 7.0 )(Page 1F-10)
Water pump mounting bolt 10 1.0 7.0 )(Page 1F-13)
Impeller securing bolt 8 0.8 6.0 )(Page 1F-16)
Water pump case screw 6 0.6 4.5 )(Page 1F-16)
Water pump air vent bolt 13 1.3 9.5 )(Page 1F-16)

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