Engine Removal From Drive Tube (cont’d)
Figure
95
6.
Pull the engine off the tube.
7.
Wipe off excessive grease, oil, and dirt, using
lintless rags and commercial degreaser.
8.
Look for obvious damage and wear, e.g. cracked
fuel lines, cracked dust covers, broken and
chipped cooling fins on the cylinder head, loose
screws, or signs of leakage.
Engine Disassembly
1.
Remove the air cleaner and carburetor as
described under Carburetor Removal, page
14.
2.
Remove the muffler cover, muffler and spark plug.
3.
Remove the clutch and flywheel as described
under Clutch Shoes and Flywheel Removal,
page
35.
4.
Remove the recoil assembly as described under
Recoil Mechanism Removal, page
30.
5.
Remove the nut securing the starter pulley
to
the
6.
Remove the starter pulley by turning
it
counterclockwise until it
is
completely unscrewed.
Be careful not
to
lose the washer.
7.
Remove the
two
bolts securing the cylinder
to
the
crankshaft.
See
Figure
96.
crankcase.
Figure
96
8.
Carefully pull the cylinder and cylinder gasket from
the crankcase being careful not
to
damage the
cylinder bore or piston assembly.
NOTE: The exhaust port is on the right side when
viewed from the recoil end.
NOTE:
If
crankshaft axial (end) play
is
suspect,
use a dial indicator
to
check the axial (end) play
before disassembling the crankcase. Make note of
this measurement See Figure
97.
maximum allowable end play
.55
mm
(.O20’)
Figure
97
9.
From the flywheel end, remove the three screws
with lockwashers securing the crankcase halves
together and pull apart the crankcase halves.
Carefully remove the crankshaft with attached
connecting rod and piston. Note that the
crankshaft ends are different. The keyway is used
to house the flywheel key and will be on the end
with the flywheel and coil.
See
Figure
98.
41
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