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10. Recheck alignment and replace hood assembly.
POWER
TRAIN
DRIVE-BELT
TENSION
1. Loosen
three bolts
marked A
(figure
3) and
the
two nuts
securing
the lower chain housing to the
main
frame.
DO NOT loosen bolts marked B.
2. Loosen
locknut C and
turn
adjusting bolt D clock-
wise to
tighten
the drive
belt.
To loosen the belt, turn
bolt D counterclockwise and
move
the chain case to
the rear.
Turn in the adjusting bolt
and secure
with
the locknut.
3.
When
proper belt tension
is achieved,
tighten
all
nuts and
bolts
including the two
lower nuts.
NOTE:
Proper
t
ension
for a NEW belt is obtained
when clutch centers are
spaced
10-3/4
inches apart
(figure 3A)
.
Proper tension for
a
used belt is obtained
when
the
opposite
sides
of the belt
can
be
squeezed
together to
within 2-3/4 to 3-1/4 inches of
each other
at
the
drive clutch (see
figure 3).
DRIVE BELT REMOVAL AND
REPLACEMENT
Remove the hood.
Relieve belt tension by
following
step
1
of the preceding procedure.
Remove the
belt
guard and the drive belt from the driven-clutch
sheave.
Remove the
other
end from the drive
clutch sheave.
Install the replacement belt in
reverse
order.
Mter
replacement, check drive-belt
tension as
outlined
in
steps 2 and 3 of the previous procedure.
DRIVE-BELT ALIGNMENT
1. Remove the clutch guard.
2. Loosen the four bolts securing the engine to
the
engine mount (figure 3A).
Figure 3
2
3. Place
a straightedge
on the fixed face of the drive
clutch and move the engine until the offset between the
straightedge
and the
front
and
rear edges
of the driven
clutch
is
1/4
inch.
4.
Tighten
engine
holddown
nuts and check alignment.
Rotate
driven clutch 90 degrees and repeat procedure
if necessary.
DRIVE
CHAIN
REMOVAL
AND REPLACEMENT
1. Remove hood
assembly.
2. Remove
chain-
housing cover plate (see
figure
4).
3. Loosen
chain
adjustment
bolt and push down to
slacken
drive
chain.
Remove the cotter pin, nut and
washer.
4. Remove
chain and
sprocket.
5. Chain
replacement is the reverse
of
removal.
Before
assembling
chain-housing cover plate, pack
chain
housing with 1-1/2 pints of
No.2, lithium
bearing
grease.
Adjust
drive chain as outlined in following
procedure.
DRIVE
-
CHAIN
ADJUSTMENT
1. Remove
chain-housing
cove
r
plate (figure 4).
2. Check
drive chain for
slack.
Aproperlyadjusted
chain should
have 1/8- to 1/
4-
inch
slack.
3.
If
chain
slack is
greater
than 1/4 inch
or
less
than
1/8 inch, loosen the locknut under the chain-
adjustment
bolt.
Push
the bolt
up
to tighten the chain
or down
to
loosen the chain.
NOTE
The drive-clutch cam contains 3 threaded
holes
for the ;tdjustment bolt.
If
necessary,
relocate
the bolt to obtain proper chain
tension.
DRIVEN CLUTCH
ENGINE
HOLOOOWN
NUTS
•
'oRlVE CLUTCH
~
L-VIEWG
V1EWO
Figure 3A
)
).
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