Suzuki GSF1250 Service Manual

1D-84 Engine Mechanical:
Conrod + Crankshaft
Unit: mm (in)
Tightening Torque Specifications
B718H11407002
Piston pin bore 18.002 – 18.008 (0.7087 – 0.7090) 18.030 (0.7098)
Piston pin O.D. 17.996 – 18.000 (0.7085 – 0.7087) 17.980 (0.7079)
Item Standard Limit
Item Standard Limit
Conrod small end I.D. 18.010 – 18.018 (0.7091 – 0.7094) 18.040 (0.7102)
Conrod big end side clearance 0.10 – 0.20 (0.004 – 0.008) 0.30 (0.012)
Conrod big end width 20.95 – 21.00 (0.825 – 0.827) —
Crank pin width 21.10 – 21.15 (0.831 – 0.833) —
Conrod big end oil clearance 0.032 – 0.056 (0.0013 – 0.0022) 0.080 (0.0031)
Crank pin O.D. 37.976 – 38.000 (1.4951 – 1.4961) —
Crankshaft journal oil clearance 0.016 – 0.040 (0.0006 – 0.0016) 0.080 (0.0031)
Crankshaft journal O.D. 33.976 – 34.000 (1.3376 – 1.3386) —
Crankshaft thrust clearance 0.055 – 0.110 (0.0022 – 0.0043) —
Crankshaft thrust bearing thickness
Right side 2.425 – 2.450 (0.0955 – 0.0965) —
Left side 2.350 – 2.500 (0.0925 – 0.0984) —
Crankshaft runout — 0.05 (0.002)
Fastening part
Tightening torque
Note
N⋅mkgf-mlb-ft
STP sensor mounting screw 3.5 0.35 2.5 )(Page 1D-13)
ISC valve mounting screw 3.5 0.35 2.5 )(Page 1D-13)
Fuel delivery pipe mounting screw 3.5 0.35 2.45 )(Page 1D-15)
Frame down tube bolt 50 5.0 36.0 )(Page 1D-21)
Engine mounting No.1 bracket bolts 23 2.3 16.5 )(Page 1D-21)
Engine mounting No.2 bracket bolts 23 2.3 16.5 )(Page 1D-21)
Engine sprocket nut 115 11.5 83.0 )(Page 1D-22)
Speed sensor rotor bolt 25 2.5 18.0 )(Page 1D-23)
Cylinder head bolt (L175) 25 2.5 18.0 )(Page 1D-30)
Cylinder head bolt (L175) 42 4.2 30.5 )(Page 1D-30)
Cylinder head bolt (L65) 10 1.0 7.0 )(Page 1D-30)
Camshaft journal holder bolt
10 1.0 7.0
)(Page 1D-32) /
)(Page 1D-37)
Oil pipe mounting bolt 10 1.0 7.0 )(Page 1D-33)
Cam chain tension adjuster mounting bolt 10 1.0 7.0 )(Page 1D-33)
Cam chain tension adjuster cap bolt 23 2.3 16.5 )(Page 1D-33)
Cylinder head cover bolt 14 1.4 10.0 )(Page 1D-35)
Camshaft sprocket bolt 16 1.6 11.5 )(Page 1D-38)
Camshaft sprocket bolt 25 2.5 18.0 )(Page 1D-38)
Oil gallery plug (cylinder head) 10 1.0 7.0 )(Page 1D-41)
Water jacket plug 30 3.0 21.5 )(Page 1D-49)
Water inlet connector bolt 10 1.0 7.0 )(Page 1D-49)
ECT sensor 18 1.8 13.0 )(Page 1D-50)
Oil gallery plug (M6 and M8) 10 1.0 7.0 )(Page 1D-61)
Oil gallery plug (M12) 15 1.5 11.0 )(Page 1D-61)
Oil gallery plug (M16) 35 3.5 25.5 )(Page 1D-61)
Piston cooling oil jet bolt 10 1.0 7.0 )(Page 1D-62)
Oil gallery jet 22 2.2 16.0 )(Page 1D-62)
Crankcase journal bolt (M9) (Initial) 18 1.8 13.0 )(Page 1D-63)
Crankcase journal bolt (M9) (Final) 32 3.2 23.0 )(Page 1D-63)
Crankcase bolt (M6) (Initial) 6 0.6 4.5 )(Page 1D-64)
Crankcase bolt (M6) (Final) 11 1.1 8.0 )
(Page 1D-64)
Crankcase bolt (M8) (Initial) 15 1.5 11.0 )(Page 1D-64)
Crankcase bolt (M8) (Final) 26 2.6 19.0 )(Page 1D-64)
Balancer shaft arm bolt 10 1.0 7.0 )(Page 1D-65)

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