Mariner 70 Service Manual page 142

8. Remove 3 bolts from crankcase end cap (lower).
b
a - Bolts
b - End Cap
9. Remove crankcase bolts, and cover.
10. Remove crankcase endcap (lower).
11. Remove oil seal and O-ring seal.
a
20342
a - Oil Seal
b - O-Ring
Some models may have a wear sleeve with an O-ring
seal. See page 4A-16.
12. Crankshaft may be removed as an assembly, or
by component parts.
IMPORTANT: If removed by components, rod
caps MUST be reassembled on the same rod - in
the dame direction. (Each mating surface is
slightly different), so rebolt cap to rod immediate-
ly, or mark rods and caps.
4A-14
a
13. Remove main roller bearing assemblies (2) from
S Remove retaining ring.
S Remove race.
20020
S Remove main roller bearings.
20032
a - Retaining Ring
b - Race
14. Remove 2 bolts, each rod cap, using a 3/8", 12
IMPORTANT: Before disassembly, use a carbide-
tip scriber to mark caps and rods, to return pis-
b
tons to proper cylinder.
20341
15. Remove piston assembly from crankshaft; reat-
a - Bolts
POWERHEAD
crankshaft as follows;
b
a
c
point socket.
tach caps to respective rods, as each is removed.
CAPS MUST BE INSTALLED IN SAME DIREC-
TION ON SAME ROD, or mating surfaces will not
seat properly.
a
19314
a
c
27649
c - Main Roller Bearings
19328
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