2-7
SPEC
E
MAINTENANCE SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
ENGINE
Item Unit
Model
40 hp 50 hp
CYLINDER HEAD:
Warpage limit mm (in) 0.1 (0.004)
CYLINDER:
Bore size mm (in) 67.00 ~ 67.02 (2.638 ~ 2.639)
Wear limit mm (in) 67.10 (2.642)
Taper limi mm (in) 0.08 (0.003)
Out of round limit mm (in) 0.05 (0.002)
PISTON:
Identification mark mm (in) W
Piston clearance mm (in) 0.060 ~ 0.065 (0.0024 ~ 0.0026)
Limit mm (in) 0.115 (0.0045)
Diameter D mm (in) 66.940 ~ 67.000 (2.6354 ~ 2.6378)
Measuring point H mm (in) 10 (0.4)
Pin boss inside diameter mm (in) 18.008 ~ 18.015 (0.7090 ~ 0.7093)
Ring groove clearance (installed) mm (in)
top mm (in) 0.04 ~ 0.08 (0.002 ~ 0.003)
2nd mm (in) 0.03 ~ 0.07 (0.001 ~ 0.003)
Over size piston mm (in)
Diameter 1st*
1
mm (in) 67.25 (2.648)
2nd mm (in) 67.50 (2.657)
PISTON PIN:
Diameter mm (in) 17.995 ~ 18.000 (0.7085 ~ 0.7087)
PISTON RING (1st):
Type mm (in) Keystone
Dimensions (B × T) mm (in) 2.0 × 2.6 (0.08 × 0.10)
End gap (installed) mm (in) 0.40 ~ 0.60 (0.016 ~ 0.024)
Limit mm (in) 0.80 (0.031)
PISTON RING (2nd):
Type mm (in) Keystone
Dimensions (B × T) mm (in) 2.0 × 2.6 (0.08 × 0.10)
End gap (installed) mm (in) 0.40 ~ 0.60 (0.016 ~ 0.024)
Limit mm (in) 0.80 (0.031)
CONNECTING ROD:
Small end diameter mm (in) 22.005 ~ 22.008 (0.8663 ~ 0.8665)
CRANK SHAFT ASSEMBLY:
Crank width A mm (in) 53.90 ~ 53.95 (2.122 ~ 2.124)
Crank width B mm (in) 32.88 ~ 33.10 (1.294 ~ 1.303)
Runout limit D mm (in) 0.03 (0.001)
Big end side clearance E mm (in) 0.20 ~ 0.70 (0.008 ~ 0.028)
Small end axial play limit F mm (in) 2.0 (0.08)
*1: Except for U.S.A.
To Next Page
Loading...
