Troy-Bilt 31/2 HP - Manual (Page 31)

MAINTENANCE
Cutter Bar Drive Belt Removal and Installation
A CAUTION
Before removing or installing the cutter bar drive
belt, shut the engine off, allow it to cool, discon­
nect the spark plug wire and prevent it from touch­
ing the spark plug, and reinstall the plastic blade
protector on the front of the blade. For electric
start models, also remove the Engine Ignition key
from the keyswitch.
Failure to do this could result in personal injury
or property damage.
You’ll need the following items to change the cutter
bar drive belt. You should have all these items close
at hand before beginning belt removal.
1. A replacement original equipment cutter bar drive
belt (if the old belt is bad).
2. A 100 foot-pound torque wrench.
3. A 15/16-inch socket and aVa-inch or%-inch drive
breaker bar.
4. A 1-inch box end wrench.
5. A Va-inch wrench.
6 . Clean automotive-type grease.
To remove the cutter bar drive belt:
1. Use the Va-inch wrench to remove the three bolts
that attach the weed deflector support to the drive
arm. (The heads of these three bolts are located
beneath the drive arm.)
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V .
Photo 5-23: Removing the weed defíector.
2. Use the Va-inch wrench to remove the two bolts
that attach the rear of the hood to the rear hood. Then
loosen the four (two on each side) bolts that secure
the hood to the right and left frame plates. Remove
the hood from the mower.
-.'7
Photo 5-24: Removing the hood.
3. Remove the nut from the drive arm pivot bolt by
placing the 1 -inch box end wrench on the head of the
bolt (beneath the mower) and loosening the nut with
the breaker bar and 15/16-inch socket.
NOTES
• This nut is installed very tightly at the factory
(100 foot-pounds of torque).
• If the nut is difficult to remove, apply pene­
trating oil to the nut and bolt threads. Allow it
to work in for a few minutes. Then try to
remove the nut.
It is easier to have an assistant helping you
when removing the nut. The assistant holds
the
1 -inch box end wrench in place while you
loosen the nut. If you don’t have an assistant,
brace the left end of the cutter bar against a
solid object to prevent the mower from turn­
ing when you loosen the nut.
Photo 5-25: Loosening the drive arm pivot bolt nut 29