Yamaha EF4500iSE Theory & Diagnostics Manual page 82

Yamaha Generator Theory & Diagnostics Guide
MAINTENANCE SPECIFICATIONS
ENGINE
Piston:
Piston clearance
Piston skirt " D "
Measuring point " H "
Piston pin hole inside diameter
Piston pin:
Piston pin diameter
Piston ring:
Top ring
Type
Dimensions " B × T "
End gap
Side clearance
2nd ring
Type
Dimensions " B × T "
End gap
Side clearance
OIl ring
Type
Dimensions " B × T "
End gap
Cylinder:
Inside diameter " D "
Taper limit
Warpage limit
Crankshaft:
Big end side clearance " A "
Runout " B "
Crank pin diameter " C "
Connecting rod:
Small end diameter " A "
Oil clearance
Small end diameter " B "
Oil clearance
MAINTENANCE SPECIFICATIONS
Unit
mm (in)
mm (in)
mm (in)
B
T
mm (in)
mm (in)
mm (in)
Standard
0.01 ~ 0.04 (0.0004 ∼ 0.0016)
40.95 ∼ 40.97 (1.612 ∼ 1.613)
10 mm (0.4)
10.000 ∼ 10.020 (0.3937 ∼ 0.3945)
9.99 ∼ 10.00 (0.3933 ∼ 0.3937)
Barrel face
0.8 × 1.6 (0.03 ∼ 0.06)
0.1 ~ 0.3 (0.0039 ∼ 0.0118)
0.06 ~ 0.11 (0.002 ~ 0.004)
Taper
0.8 × 1.7 (0.03 ∼ 0.07)
0.10 ~ 0.3 (0.0039 ∼ 0.0118)
0.06 ~ 0.11 (0.002 ~ 0.004)
Solid
1.5 × 1.9 (0.059 ∼ 0.075)
0.2 ~ 0.7 (0.0078 ∼ 0.0275)
41.000 ∼ 41.010 (16.14 ∼ 16.15) 41.10 (16.18)
•••
•••
0.2 ~ 0.65 (0.008 ~ 0.026)
15.970 ∼ 15.985 (0.629 ∼ 0.630) 15.940 (0.627)
10.006 ∼ 10.020 (0.3944 ∼ 0.3945)
0.015 ∼ 0.050 (0.0006 ∼ 0.0020) •••
16.000 ∼ 16.015 (0.6299 ∼ 0.6305)
0.015 ∼ 0.050 (0.0006 ∼ 0.0020) •••
3-6
7-3
SPEC
Limit
0.1 (0.004)
40.94 (1.6118)
•••
10.050 (0.3956)
9.95 (0.3917)
•••
•••
0.6 (0.0236)
0.15 (0.006)
•••
•••
0.6 (0.0236)
0.15 (0.006)
•••
•••
0.9 (0.0354)
0.05 (0.002)
0.05 (0.002)
0.7 (0.028)
0.03 (0.001)
10.050 (0.396)
16.050 (0.632)