Suzuki GZ250 1999, Service Manual

Page: 239 / 250

10-6 GZ250K2 (’02-MODEL)
ITEM STANDARD LIMIT
Piston ring groove width
1st
1.01 – 1.03
(0.040 – 0.041)
———
2nd
1.21 – 1.23
(0.047 – 0.048)
———
Oil
2.51 – 2.53
(0.099 – 0.100)
———
Piston ring thickness
1st
0.975 – 0.990
(0.0384 – 0.0390)
———
2nd
1.170 – 1.190
(0.0461 – 0.0469)
———
Piston pin bore 18.002 – 18.008 18.030
(0.7087 – 0.7090) (0.7098)
Piston pin O.D. 17.992 – 18.000 17.980
(0.7083 – 0.7087) (0.7079)
CRANKSHAFT
Unit: mm (in)
ITEM STANDARD LIMIT
Conrod small end I.D. 18.006 – 18.014 18.040
(0.7089 – 0.7092) (0.7102)
Conrod deflection 3.0
———
(0.12)
Conrod big end side clearance 0.10 – 0.65 1.0
(0.004 – 0.026) (0.04)
Conrod big end width 20.95 – 21.00
(0.825 – 0.827)
———
Crankshaft web to web width 60.0 ± 0.1
(2.362 ± 0.004)
———
Crankshaft runout 0.05
———
(0.002)
Balancer spring free length 10.0
———
(0.39)
OIL PUMP
ITEM STANDARD LIMIT
Oil pump reduction ratio 2.812 (68/21 × 33/38) ———
Oil pressure (at 60°C, 140°F) Above 30 kPa (0.3 kgf/cm 2 , 4.3 psi)
Below 70 kPa (0.7 kgf/cm 2 , 10.0 psi) ———
at 3 000 r/min.
CLUTCH
Unit: mm (in)
ITEM STANDARD LIMIT
Clutch cable play 10 – 15
(0.4 – 0.6)
———
Clutch release screw 1/4 turn back ———
Drive plate thickness
No.1
2.92 – 3.08 2.62
(0.115 – 0.121) (0.103)
No.2
3.45 – 3.55 3.15
(0.136 – 0.140) (0.124)
Drive plate claw width 15.9 – 16.0 15.0
(0.626 – 0.630) (0.590)
Driven plate distortion 0.10
———
(0.004)
Clutch spring free length 40.9
———
(1.61)