6.
DISASSEMBLY
and
REASSEMBLY
6-1
PREPARATION
and
SUGGESTIONS
0
1)
When
disassembling the engine, memorize the locations of individual parts
so
as to be able
to reassemble them correctly. Tag parts
if
there is a possibility
of
confusion.
'2)
Prepare several boxes
to
keep parts beginning to certain groups together.
3)
Group those parts related each other, tentatively assembling where they belong,
im-
mediately after removing,
in
order to prevent missing
and
misplacing.
4)
Handle the disassembled parts carefully and wash them
in
kerosene.
5)
Use
the correct
tools
in
the correct way.
6)
Standard tools required for disassembling and reassembling:
a)
Work
table
b)
Washing pan
c)
Disassembling tools
d)
Washing
oil
(kerosene
or
gasoline), Mobile oil
e)
Emery
paper, cloth
when the oil drain plug on the crankcase side wall
on
the carburetor side
is
unscrewed.
and flywheel to the specified
torque
values.
7)
Before starting
to
disassemble the engine, drain fuel and lubricant.
Oil
can be drained
8)
Tighten the screws
of
the cylinder head, main bearing cover, connecting rod, spark plug,
9)
Use new packings and gaskets
in
reassembly.
10)
Immedaitely before assembling parts, wash them
in
fresh gasoline
or
kerosene and blow
them dry.
0
11)
Apply Mobile oil
on
rotating and sliding parts.
12)
Take care not to contaminate the parts
by
dust during assembling.
13)
Tighten bolts, nuts and screws with proper torque according to the their sizes.
If
small
14)
After completely assembling the engine, turn it
by
hand and check
if
there
is
any
screws are tightened too tight, they may get broken.
abnormality
or
loose members.
6-2
SPECIAL
TOOLS
Flywheel Puller
Valve
Guide Puller
Valve
Valve
Seat Cutter
Spring Compressor
Fig.
6-2
-21
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