Maintenance/Repairs
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TRACTION
DRIVE
ADJUSTMENTS
(5HP
MODEL
ONLY)
An adjustment to the wheel drive
bail cable may be required
if
loss
of
traction occurs, or if the ma-
chine creeps
in
forward or reverse
when the WHEEL DRIVE BAIL
is
not engaged. Adjusting the
wheel drive bail cable will tighten
or loosen the tension on the drive
belt that transmits power from the
engine to the transaxle (transmis-
sion).
Traction
Drive
Check
Perform the following test to deter-
mine
if
an adjustment
is
necessary.
1. Move the machine to a hard-
surfaced, clean, level area such as
a driveway.
2. Brace the front left wheel
against an immovable object such
as a wall or a sturdy fence post.
Make sure that the vacuum attach-
ment will not strike the wall or
fence post during the following
tests as damage to the attachment
could result. Also, make sure that
the rear wheels are on a hard, level
surface.
3. With the engine running, shift
into 3rd gear and slowly engage
the WHEEL DRIVE BAIL. One
or both
of
the rear wheels should
spin
in
place.
If
neither wheel
spins, the belt tension
is
too loose.
Adjust the wheel drive bail cable
as described on this page.
4. With the engine running, shift
into 4th gear and slowly engage
the WHEEL DRIVE BAIL. The
belt should slip on its pulleys, pre-
venting the rear wheels from turn-
ing.
If
the wheels turn, the belt
tension is too tight. Adjust the
wheel drive bail cable as described
next.
To
Adjust
the
Wheel
Drive
Bail
Cable:
1.
Shut
off
the engine, disconnect
the spark plug wire from the
spark plug, and make sure that all
moving parts have come
to
a com-
plete stop.
2.
To
tighten a loose drive belt,
use a
1/2" open-end wrench to
loosen the lower jam nut (A,
Figure 5-11) on the adjuster (B).
Loosen the nut 2 or 3 full turns.
3. Pull the cable
up
until the lower
jam nut rests against the cable
bracket (D) and then tighten the
upper jam nut (C) against the cable
bracket.
4. Tighten the lower jam nut (A)
against the cable bracket (D).
5. Using two wrenches, tighten
both jam nuts securely.
6.
To
loosen the tension on the
drive belt, follow the previous
steps but reverse the loosening and
tightening sequence
of
the upper
and lower jam nuts.
7. After making an adjustment,
perform the "Traction Drive
Check" described on this page.
Repeat Steps 2 through 6
of
these
adjustment procedures until the ad-
justment
is
correct.
8.
If
further adjustments to the
cable are impossible because you
have run out
of
threads on the ad-
juster, a secondary set
of
adjust-
ments can be obtained
by
reposi-
tioning the wheel drive bail cable
clamp (A, Figure 5-12) to the
lower hole (B)
in
the handlebar, as
follows:
a.) Remove the clamp from the
upper hole in the handlebar.
b.) Fully loosen the upper jam nut
(C, Figure 5-11) and slide the
cable downward.
c.) Install the clamp
in
the lower
hole
of
the handlebar.
42
d.) Obtain a preliminary tension
adjustment on the cable by re-
ferring to Step
15
of
the
"Replacing the Wheel Drive
Bail Cable" instructions on
Page 43. After obtaining a pre-
liminary setting, perform the
"Traction Drive Check" and re-
peat Steps 2 through 7
of
these
adjustment procedures.
9. A new belt
is
required if you
run out adjustments with the cable
clamp located
in
the lower hole in
the handlebar.
Figure 5-11:
Lower
jam
nut
(A),
adjuster
(8),
upper
jam
nut
(C)
and
cable
bracket
(D).
Figure
5-12: Wheel
drive
bail
cable
clamp (A)
and
secondary
adjust-
ment
hole
(8).
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