Gravely 424 - Page 30

These are
just
a few
of the tnore oommon
iadicators.
Numerous
others
oxist and
are
obvious
to the
experi-
enced
mechanic.
Often the
cause will bsome
apparent
in view
of
the
parficular
condition
of
the
part.
Aliays
look for these
signs
when disassembling
aa
ea$ne
prior
to
reoaditioning.
DISASSETABTY PROCEDURE
l. Disconnect
lead and
remove
spar}
plug.
2.
Close valve, remove
fuel line
at carburstor,
3. Remove
air
cleaner from
carburetor
intake.
4.
Remove
carburetor.
5. Remove
blower housing,
cylinder
ba$e
and head bafle.
6.
Remove
rotating
ssreen
and starter
pulley,
7. Flywheel
is
mounted
on tapered
portioa
of
the crankshaft.
Use
of a
puller
is
recommended
for
remov-
ing fywheel.
8. Remove
breaker
point
cover,
breaker
point
lead,
breaker
assembly
and
push
rod if
so equipped.
9. Remove
magneto assembly.
10. Remove
valve
cover and
breather
assembly.
11. Remove
rylinder
head.
12.
Baise
valvg
springs with
a spring
compressor and
push
valve keelrers
ofi
yalve
stems.
Remorre
valve
spring
retainers,
springs
and
valves.
13.
Remove
oil base
and unscrew
connecting
rod cap. Remove
piston
assembly
from
cylinder
.b.tock.
14. Remove
crankshaft,
oil
seals and^if
neoessary
antifriction
bearings.
It
may be
necessary
to
press
crank-
shaft
out
of
eyliader block.
Bearing plate
should
be rernoved
frst if
this is doae.
15.
Turn cylinder
block
upside
down and,
using a
srnall
punch,
drive camshaft
pin
out from
power-take-
ofr
side of
engiae. Pin
will
slide
out easily
after it is
driven
free
of block.
10.
Remove
camshaft and
valve
tappets.
17.
Loosen
and
remove governor
arm from
governor
shaft.
18.
Unscrew
governor
bushing
nut and
remove
governor
shaft from
inside
of
cyliader blodc
19.
toosen
(do
not
remove)
sctew
located
to lower right
of
govelnor
bushing
aut
until
governor
gear
is
free
to slide
off stub
shaft.
s
I