1984-1986 Mercury Force 4HP Outboards Service Manual, Page 51Get this manual
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NUT LOCKWASHER SCREW, CYLINDER HEAD
RETAINING RING PISTON PIN
PIPE PLUG SCREW, TAPTITE 1 4-20 SCREW 14-20 :I 314
SCREW 1 4-20
13 14 15 18 17
PISTON C