Evinrude 4906B 4HP 1969 Owner's Manual page 401

POWERHEAD
HP YEAR PISTON RING GROOVE
1.5
1968 0.0035
1.5
1969 0.0035
1.5
9170 0.0040
3.0 1956-67
3.0 1968 0.0035
1969 0.0035
4.0
1970 0.0040
4.0
1965-68 0.0035
5.0
1956-64 0.0035
5.5
6.0 1965-70
7.5 1956-57 0.0035
9.5 1968 0.0035
9.5 1969-70 0.0035
1956-63
10
15 1956 0.0015
18 1957-64 0.0015
18 1965-68
18-20 1969-70 0.0040
1966-68
20
25 1969-70 0.0040
1962064 0.0045
28
30 1956 0.0045
1965-70 0.0045
33
35 1957-59
1960-61 0.0065
40
40 1962-68 0.0045
40 1969-70 0.0045
MAX MIN
0.0010
0.0010
0.0020
0.0035 0.0010
0.0010
0.0010
0.0020
0.0010
0.0010
0.0035 0.0010
0.0010
0.0010
0.0010
0.0015 0.0030
0.0030
0.0030
0.0010
0.0035
0.0020
0.0010
0.0035
0.0020
0.0070
0.0070
0.0070
0.0065 0.0050
0.0050
0.0070
0.0020
SPECIFICATIONS
WIDTH OF RING
MAX MIN
0.0925
0.0935
0.0625 0.0615
0.0625 0.0615
0.0935 0.0925
0.0625 0.0615
0.0625 0.0615
0.0935 0.0925
0.0935 0.0925
0.0935 0.0925
0.0935 0.0925
0.0935 0.0925
0.0925
0.0935
0.0935 0.0925
0.0625 0.0615
0.0625 0.0615
0.0625 0.0615
0.0935 0.0925
0.0935 0.0925
0.0935 0.0925
APPENDIX A-5
PISTON RING
END GAP
MAX MIN
0.015 0.005
0.015 0.005
0.015 0.005
0.015 0.005
0.005
0.015
0.015 0.005
0.015 0.005
0.005
0.015
0.005
0.015
0.015 0.005
0.015 0.005
0.017 0.007
0.007
0.017
0.007
0.017
0.007
0.017
0.017 0.007
0.007
0.017
0.017 0.007
0.007
0.017
0.017 0.007
0.017 0.007
0.007
0.017
0.017 0.007
0.007
0.017
0.007
0.017
0.007
0.017
0.007
0.017