6.
DISASSEMBLY
and
REASSEMBLY
6-1
PREPARATIONS and SUGGESTIONS
6-1-1
DISASSEMBLY
When disassembling the engine, memorize where and how each part is assembled
in
order to be able to reassemble it
correctly. Tag parts if there is a possibility of confusion.
Take care not to damage packings and gaskets, which are fragile.
In order to prevent missing and misplacing, group related parts together, tentatively assembling them, immedi-
ately after disassembled each sub-assemb!y.
Handle the disassembled parts carefully, and wash them in Kerosene.
Use the correct tools in the correct way.
Standard tools required for disassembly and reassembly.
a> Work table
b) Washing pan
c) Disassembling tools
d) Washing
oil
(Kerosene or gasoline), Mobile
oil,
Brush
e)
Emery paper, Cloth
Before starting to disassemble the engine, drain fuel and lubricant. (To prevent from danger and stain.)
6-1-2
CLEANING before reassembly
1
)
Check all sliding and rotating parts, such as piston, cylinder, valve, camshaft, crankshaft, gears and bearings for defect.
2) Wash the disassembled parts in Kerosene to remove dust, dirt and contaminated oil thoroughly. Wash them twice, first
time remove visible dirt roughly, and second time using fresh Kerosene.
3)
After washing, blow them thoroughly with compressed air.
4)
Do
not wash electric parts. Wipe them with clean cloth and dry them.
5)
Accumulated carbon
on
the cylinder-head, gasket, piston, cylinder and inside the muffler to be carefully planed and
wrap the piston with
oil
stone
to
get smooth surface.
6)
Parts
of
carburetor
to
be washed carefully with gasoline and blow them thoroughly with compressed
air.
7)
Check the cable for any damage.
8)
Clean contact breaker with dry cloth. Check the breaker-point
if
it contact surface is flat. If there
is
an evidence of
pitting
or
pyramidding, this should be corrected with
MOO
wrapping paper.
9)
Air-cleaner element shall be soaked
in
the liquid soap and dry
thoroughly.
Then put
it
to
mixture
of
2
-
4
kerosene and
1
engine oil, and assemble it after squeezed well.
10) Take special care not to contaminate the parts with dust and apply mobile oil
on
the surface in order to prevent from
rust.
6-1-3
CHECKS
and
CORRECTIONS before reassembly
After disassembing and cleaning the engine parts, check them and, if necessary, correct them according to the
CORRECTION TABLE
of
section
''
12.CHECKS and CORRECTIONS".
Gaskets and fuel pipe shall be replaced to new one.
r"
-
20
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