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5-4
REASSEMBLY
PROCEDURES
0
PRECAUTIONS
FOR
REASSEMBLY
1)
Clean parts throughly before reassembly.
Pay most attention to cleanliness
of
piston, cylinde :r, crankshaft, connectin
g
rod and bearings.
Scrape
off
all carbon deposits from cylinder head, piston top and piston ring grooves.
Check
lip
of
oil
seals.
Replace oil
seal
if
the
lip is damaged.
Apply oil
to
the lip before reassembly.
4)
Replace all the gaskets with new ones.
5)Replace keys,
pins,
bolts, nuts, etc.,
if
necessary.
6)Torque bolts and nuts to specification referring to the
“TORQUE
SPECIFICATIONS”.
7)Apply oil to rotating and sliding portions.
8)
Check and adjust clearances
and
end plays where specified
in
this manual.
54-1
CRANKSHAFT
(1)
Install crankshaft on crankcase lapping the shaft
with polyvinyl tape to avoid damage to oil seal.
(2)
Install
woodruff
key for the flywheel on critnk-
shaft.
54-2
PISTON
AND
PISTON
RINGS
(1)
Install the oil ring first, then second ring and top
ring.
Spread the ring only far enough to slip over the
piston and into the correct groove.
Use
care not
to distort the ring.
Install the second ring with the punched mark
“R”or
“N”
beside the gap on the top side. (See
Fig.
5-29.)
Fig.
5-26
OPEN
ENDS
OF
PISTON
RING
/
Fig-
5-27
-
32
-