Troy-Bilt TUFFY 1634A Operator's Manual page 19

,_ WARNING:
Beforeinspecting, cleaning or servicing the machine,shut off engine, wait for all
moving parts to come to a complete stop, disconnect spark plug wire and move wire away from
spark plug. Failureto follow these instructions can result in serious personal injury or property
damage.
FRONT/
FORWARD
C
\
Figure 5-3: Instafl tinesso that cuttingedge of tines enter soft first when tiller movesforward.
CHECKINGAND ADJUSTING
FORWARDDRIVE BELT TENSION
It is important to maintain correct tension
on the forward drive belt. A loose belt will
causethe tines and wheelsto slow down--
or stop completely -- eventhough the en-
gine is running at full speed. A too tight
belt can result in unintentional tine move-
ment when the clutch bail is in the Neutral
(released) position.
• Checkbelt tension after the first two
hours of break-in operation and after every
10 operating hours.
• At the end of each tilling season, check
the belt for cracks, cuts or frayed edges
and replace it as soon as possible.
tension is correct if this second measure-
ment is between 1/6"-to- 3/16" longer than
the first measurement.
4. If the spring is too short (less than
1/16"), the tension is too loose. If the
spring is too long (more than 3/16"), the
tension is too tight.
5. Toadjust the length of the spring:
a. Releasethe Forward Clutch Bail.
b Unthread the hex nut (C, Figure 5-4)
halfway up the adjustment screw (D).
c. Unhookthe top of the spring from the
Forward Clutch Bail.
d. Use pliers to prevent the adjuster (B)
from turning and turn the slotted screw lo-
cated inside the spring clockwise (viewed
from operator's position) to increase ten-
sion on the spring. Turn the screw counter-
clockwise to decreasetension. Once
adjusted, reattachthe spring to the For-
ward Clutch Bail.
e. Repeat S teps2 and 3 to re-measure the
length of the spring. Whenthe second mea-
surementis between1/16"-to- 3/16" longer
thanthefirst measurement, r etightenthe hex
nut (C)againstthe top of the adjuster (B).
ReplacementBelt Information
If the drive belt needsto be replaced, see
your local authorized dealer or refer to the
Parts List for ordering information. Use
only a factory-authorized belt as an "over-
the-counter" belt may not perform satis-
factorily. The procedure requires average
mechanicalability and commonly available
tools.
To Check ForwardBelt Tension:
1. Stop engine, wait for all parts to stop
moving and disconnect spark plug wire.
2. With the Forward Clutch Bail in an open
(released) position, measure and note the
overall length of the cable spring (A, Figure
5-4) by measuring from the outermost coil
to the outermost coil.
3. Squeezethe Forward Clutch Bail against
the handlebar (see Figure 5-4) and re-
measure the length of the coils. The belt
Figure5-4: Tocheckforwardbelt tension, take twomeasurementsof the
overa// /ength of the coils in the spring-- first with the dutch bail open,
then with the dutch bail closedagainst the handlebar.
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