4.
DISASSEMBLY
and
REASSEMBLY
4-1
PREPARATION
and
SUGGESTIONS
1) When disassembling the engine, memorize the locations
of
individual parts
so
as
to
be able to reassemble them correct-
ly. Tag partsif there
is
a possibility
of
confusion.
2)
Prepare several boxes
to
keep parts belonging to certain groups together.
3)
Group those parts related each other, tentatively assemblingwhere they belong, immediately after removing, in order
to prevent missing and misplacing.
4)Handle the disassembled parts carefully and wash them in kerosene.
5)
Use thecorrecttoolsinthecorrectway.
6)
Standardtoolsrequiredfor disassemblingand reassembling:
a) Work table
b) Washing pan
c) Disassembling tools
d) Washing oil (kerosene orgasoline),
2
cycle-oil
e) Emery paper, cloth
7)
Beforestarting
to
disassemble the engine,drainfuel.
8)
Tighten the screws of the cylinder, crankcase, connecting rod, spark plug, and flywheel
to
the specified torque values.
9) Use new packings and gasketsinreassembly.
10)
Immediately before assembling parts, wash them in fresh gasoline orkerosene and blow them dry.
11) Apply
2
cycle-oil on rotating andsliding
parts.
12)
Takecarenot
to
contaminatethepartsbydustduring assembling.
13)
Tighten bolts, nuts and screws with proper torque according
to
the
their sizes.
If
small screws are tightened too tight,
they may get broken.
14) After completely assembling the engine; turn it byhand and check if there
is
any abnormality orloose members.
,-
4-2
SPECIAL
TOOLS
(Fig.
1)
Fig.
1
-4-
