8-4 RV125K4/K5 (’04, ’05-MODELS)
CYLINDER + PISTON + PISTON RING
Unit: mm
CONROD + CRANKSHAFT
Unit: mm
OIL PUMP
CLUTCH
Unit: mm
ITEM STANDARD LIMIT
Compression pressure
1 300 – 1 700 kPa
(13 – 17 kgf/cm
2
, 185 – 242 psi)
980 kPa
(9.8 kgf/cm
2
,
140 psi)
Piston-to-cylinder clearance 0.040 – 0.055 0.120
Cylinder bore 57.000 – 57.015 57.090
Piston diam. 56.955 – 56.970
Measure at 8 mm from the skirt end.
56.880
Cylinder distortion — 0.05
Piston ring free end gap 1st R Approx. 7.2 5.8
2nd R Approx. 5.0 4.0
Piston ring end gap 1st 0.20 – 0.32 0.7
2nd 0.20 – 0.32 0.7
Piston ring to groove clearance 1st — 0.18
2nd — 0.15
Piston ring groove width 1st 1.01 – 1.03 —
2nd 1.01 – 1.03 —
Oil 2.01 – 2.03 —
Piston ring thickness 1st 0.970 – 0.990 —
2nd 0.970 – 0.990 —
Piston pin bore 14.002 – 14.008 14.030
Piston pin O.D. 13.992 – 14.000 13.980
ITEM STANDARD LIMIT
Conrod small end I.D. 14.006 – 14.014 14.040
Conrod deflection — 3.0
Conrod big end side clearance 0.10 – 0.45 1.0
Conrod big end width 15.95 – 16.00 —
Crank web to web width 53.0 ± 0.1 —
Crankshaft runout — 0.08
ITEM STANDARD LIMIT
Oil pressure (at 60 °C, 140 °F) Above 15 kPa (0.15 kgf/cm
2
)
Below 35 kPa (0.35 kgf/cm
2
)
at 3 000 r/min
—
ITEM STANDARD LIMIT
Clutch lever play 10 – 15 —
Drive plate thickness 2.95 – 3.15 2.65
Drive plate claw width 11.8 – 12.0 11.5
Driven plate distortion — 0.10
Clutch spring free length 32.6 31.0