SPEC
61
Model
RS90RX/RS90GTX/RS90GTAX/RS90LTX/RS90LTGTX
Piston ring:
Top ring
Ring type
Barrel
Dimensions (B
×
T)
1.00
×
2.80 mm (0.039
×
0.110 in)
2nd ring
Top ring (same or no)
No
Ring type
Taper
Dimensions (B
×
T)
1.00
×
2.90 mm (0.039
×
0.114 in)
Oil ring
Dimensions (B
×
T)
2.00
×
2.50 mm (0.079
×
0.098 in)
End gap (installed)
Top ring
0.35 ~ 0.45 mm (0.014 ~ 0.018 in)
2nd ring
0.75 ~ 0.85 mm (0.030 ~ 0.033 in)
Oil ring
0.20 ~ 0.60 mm (0.008 ~ 0.024 in)
Side clearance (installed)
Top ring
0.040 ~ 0.080 mm (0.0016 ~ 0.0032 in)
2nd ring
0.030 ~ 0.070 mm (0.0012 ~ 0.0028 in)
Oil ring
0.055 ~ 0.140 mm (0.0022 ~ 0.0055 in)
Plating/coating
Top ring
Chrome plated/parkerizing
2nd ring
Parkerizing
Connecting rod:
Small end diameter
19.005 ~ 19.018 mm (0.7482 ~ 0.7487 in)
Big end diameter
41.000 ~ 41.018 mm (1.6142 ~ 1.6149 in)
Crankshaft-pin-to-big-end-bearing
clearance
0.033 ~ 0.050 mm (0.0013 ~ 0.0020 in)
Bearing color code
0 = White – White 1 = Blue – Blue 2 = Black – Black
3 = Brown – Brown 4 = Green – Green
5 = Yellow – Yellow
Crank pin:
Crank pin outside diameter
37.976 ~ 38.000 mm (1.4951 ~ 1.4961 in)
Crankshaft:
Measuring point 1
62.0 mm (2.44 in)
Measuring point 2
100.0 mm (3.94 in)
Width A
62.25 ~ 62.65 mm (2.451 ~ 2.467 in)
Width B
234.65 ~ 235.65 mm (9.24 ~ 9.28 in)
Crankshaft runout C
0.03 mm (0.0012 in)
Big end side clearance D
0.160 ~ 0.262 mm (0.0063 ~ 0.0103 in)
Crankshaft-journal-to-crankshaft-
journal-bearing clearance
0.027 ~ 0.045 mm (0.0011 ~ 0.0018 in)
Bearing color code
2 = Black 3 = Brown 4 = Green 5 = Yellow
6 = Pink 7 = Red 8 = White
MAINTENANCE SPECIFICATIONS
