Service Data; Cylinder, Piston, Piston Ring; Conrod Crankshaft - Suzuki RM250 Owner's Service Manual

SERVICE DATA 17·1
SERVICE DATA
CYLINDER
+
PISTON
+
PISTON RING
Unit: mm (in)
ITEM STANDARD LIMIT
Piston t o cylinder clearance 0.045 - 0 .055 0 . 120
(0.0017 - 0 .0022) (0.0047)
Cylinder bore 67 .000 67.015
(2.6381 - 2 .6384)
~-
Measure 20 (0.8) from the top surface
Piston diam . 66 .950-66.965
66.950
(2.6381-2.6384)
(2.6381)
Measure 24 (0.91 from the skirt end
Cylinder distortion 0.05
~-
(0.002)
Cylinder head distort ion 0.05
~-
(0.002)
Piston ring free 1st &
R
I
A 6.4
5. 1
end oap 2nd
pprox . (0.25)
(0.20)
Piston ring 1st & 0 . 20 0.40 0.85
end oap
2nd (0.008-0.016) (0.033 )
Piston ring to
1st
& 0 .020 0 .060
groove clearance 2nd (0 .0008 - 0 .0024)
~-
Piston pin bore 18 .000 18.006
18.030
(0 .7087 - 0 .7089) (0 .7 098)
Piston pin 0 .0 . 17.995 - 18.000
17.980
(0.7085 - 0 .7087) (0.6724)
CONROD
+
CRANKSHAFT
Unit: mm (in)
ITEM
STANDARD LIMIT
Conrad small end 1. 0. 23.003 - 23 .0 11 23.040
(0 .9056 - 0 .9059) (0.907 1)
Crank web to web w idth 58 .0±0.1
~-
(2.283+ 0 .004)
Crankshaft run out
0.05
~-
(0.002)
CLUTCH
Unit: mm (in )
ITEM STANDARD
LIMIT
Clutch c able play 2-3
~-
(0.08-0. I 2)
Drive plate thickness 2.45 2 .7 5 2. 15
(0.096 - 0 .108)
(0 .085)
Drive plate claw width
15.9- 16.0 15.3
(0.626 - 0 .630) (0. 602)
Driven plate distortion
0 . 10
~-
(0.004)
Clutch spring f ree length
45.4
~-
(1.79)