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ENGINE
LOWER END
®
sit on the
workbench. Keep
this
in
mind
when the
crankcase
ison the
workbench.
Crankcase Separation
NO
TE
A crankcase separat ion
1001
is
re-
quired
10
remOl'e
the crankshaft as
-
sembly/rom
the left
crankcase half. A
147
special
Po
laris crankshaft instatla-
tion
tool set (part
No.
287/283)
is
necessary
to
draw
the
crankshaf t
back
into
the
leji case halfand
10
assemble
the
crankcase
halves.
I.
Remove
the
engine
as described in
this
chapter.
2. Remove
all exterior
engine
assemblies
from
the
crankcase as
described
in
this
chapter and other
re-
lated
chapters,
3. Remove
the camshaft
drive gear from the
crank-
shaft
as
described
under
Cams
haft
Chain
and
Sprockets
in Chapter Four.
4.
Place the
crankc ase
on
wooden blocks,
or
a fab-
ricated
wooden
box
as
shown in
Figure
3
1.
with
the
right side facin
g
up (Fig
ure
32
).
NO
TE
Keep
trac k
of
the crankcase
bolts
hy
drawing
the
cra
nkcase outline
a
ll {}
piece
ojcurdboard,
then number and
punch
holes
10
correspond with
each
bolt
locati on.
After
removal, insert
the holts
in
their
appropriate
locu
-
tions,
Leave cable
clamps
on their
re-
spective
holts.
5.
Loosen the
ten
crankcase
mounting
bolts
one-quarter
of a turn
and
in a crisscross
pattern,
Re-
peat until all bo
lts
arc
loose
.
6. Remove
all ten
bolts
and store
them
in
the
card-
board
fixture ill
the
correct
locat ion.
7.
If still in
place,
remov
e the
WoodrulT
key
from
the right-hand
end of the crank
shaft.
NOTE
The
crankcase
separa tion
10 0 1
is
at-
tached
to
one
side of
the
crankcase
with
the
pressure
boll
placed
at
the
ce
nte r
0/
the cra nkshaf
t.
The
1001
pushes
the crankshaft
0111
of
the
right
crankcase
main
hea ring
wit
hout
damaging the
crankshaft.
Pounding
OIl
the end of
the
crankshaf
t
c
a ll
knock
the crankshaft
Dill
of
align-
ment as
well
as damage the threaded
end.
8.
Install
the
crankcase separating
tool
into
the
threaded
holes
on
the
right crankcase, Center
the
pressure
bolt on
the
end of
the
crankshaft.
Tighten
the
securing
bolts
into
the
crankcase
making
sure
the
tool
is
parallel
with
the
crankcase.
If
necessary.
back out one
of the mounting
bolts.
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