3-18
POWERHEAD
Tap the
piston out of the cylinder
from
the crankshaft
side.
Immediately
attach
the
proper
rod cap
to the
rod and hold it
in
place
with the rod bolts.
The few minutes
involved
in securing
the
cap
with
the
rod
will ensure
the
matched
cap remains
with
its mating
rod during the
cleaning
and as-
sembling work.
Identify
the
rod
to
ensure
it
will
be
installed
into the cylinder
from which it was
removed.
Remove
and identify
the other
rod caps,
needle
bearings
and
cages,
and
rods
with
pistons,
in the same manner.
DISASSEMBL Y
Before
separating
the
piston
from
the
rod,
notice
the
location
of
the
piston
in
relation
to the rod.
Observe the hole in the
rod trough on one side of the rod near
the
wrist
pin opening and another
at the lower
end.
These holes must face toward the
TOP
of the engine during installation.
Observe
the slanted
edge and the
sharp
edge of the dome-type
piston.
The slanted
edge
MUST
face
toward
the exhaust
side of
the cylinder
and the sharp edge toward
the
intake side during installation.
When the
rod is installed
to the piston,
the relationship
of the rod can only be one
way.
The rod holes must face
upward and
the
piston
must
face
as described
in the
previous paragraph.
Removing the rod cap from
the rod.
WORD
IILOOSE
II
Identifying
word "LOOSE"
on
the inside of the piston
skirt
and the hole in the rod
at
the wrist
pin end.
The
wrist
pin
must
be
driven
from
the loose side
of
the
piston out the tight
side,
as
described in the text.
Observe
into the piston
skirt.
On most
model pistons, notice the "L" stamped
on the
boss
through
which
the
wrist
pin
passes.
The letter
mark
identifies
the
"loose"
side
of the piston and indicates
side of the piston
from which the wrist pin must be driven out
without
damaging
the piston.
Some pistons
may have the full word
''LOOSE''
stamped
on
the inside of the piston skirt.
If the piston does not have the "L
1111
or the
word
LOOSE
stamped,
the wrist
pin may be
driven out in either
direction.
Close
view
of
a piston
with
the slanted
edge and
sharp edges identified.
The piston can only
be
installed
one way for proper operation.
Summary of Contents for 4906B 4HP 1969
Page 5: ......
Page 87: ...3 46 POWERHEAD Exploded drawing of a 7 5 hp powerhead 1956 58 with principle parts identified...
Page 88: ...CYLINDER BLOCK 3 47 HEAD GASKET RING...
Page 90: ...CYLINDER BLOCK 3 49 THERMOSTAT EXHAUST COVER The...
Page 137: ...4 46 FUEL LEVER AND LOW SPEED...
Page 153: ...4 62 FUEL Exploded view of a pressure tyoe fuel tank with major parts identified...
Page 157: ...4 66 fUEL...
Page 412: ...A 16 APPENDIX Wire Identification 33 hp with Generator 1965 67...
Page 413: ...APPENDIX A 17 o C...
Page 414: ...Wire Identification 33 hp with Generator 1969 70...
Page 415: ...APPENDIX A 19 Wire Identification 35 hp 1957 59...
Page 416: ...A 20 APPENDIX Wire Identification 40 hp Standard Shift with Generator 1960 66...
Page 417: ...APPENDIX A 21 UJ cc b Wire Identification 40 hp Standard Shift with Generator 1967 68...
Page 419: ...APPENDIX Wire Identification 40 hp Electric Shift with Generator 1961 66 A 23...
Page 420: ...A 24 APPENDIX C 00 Wire Identification 40 hp Electric Shift with Generator 1967 68...
Page 421: ...Wire Identification 40 hp Electric Shift with Generator 1969 70...
Page 422: ...NOTES NUMBERS...
