TOHATSU 40 Service Manual page 79

Figure Description
Cylinder
Bore
(Standard)
2
Piston
Clearance
Piston Ring
3
End Gap
Connecting
4 Rod Bearing
(Small End)
Connecting
4 Rod Bearing
(Big End)
3-/ 4-Cylinder
T1157
Unit 40 / 50
2.677
68.0
1
in
mm
0.0012 - 0.0028
2
0.03 - 0.07
Top Ring
0.008 - 0.015
in 0.22 - 0.37
mm 2nd Ring:
0.013 - 0.018
0.33 - 0.48
0.669
1
17.0
0.827
2
21.0
in
mm
1.063
3
27.0
0.079
4
2.0
0.984
1
25.0
1.260
2
32.0
in
mm
0.778
3
19.8
0.138
4
3.5
POWERHEAD
T1158
60 / 70 80 / 90
2.913 3.386
74.0 86.0
0.0016 - 0.0031 0.0031 - 0.0051
0.04 - 0.08 0.08 - 0.13
0.009 - 0.015 0.010 - 0.016
0.22 - 0.37 0.25 - 0.40
0.787 0.787
20.0 20.0
0.984 0.984
25.0 25.0
0.945 1.102
24.0 28.0
0.098 0.098
2.5 2.5
1.063 1.181
27.0 30.0
1.417 1.535
36.0 39.0
0.709 0.858
18.0 21.8
0.177 0.177
4.5 4.5
T1159
115 / 120 /140
3.465
88.0
0.0039 - 0.0055
0.10 - 0.14
0.011 - 0.019
0.28 - 0.49
0.787
20.0
0.984
25.0
1.102
28.0
0.098
2.5
1.260
32.0
1.614
41.0
0.866
22.0
0.177
4.5
4-5