Belt Inspection; Drive Belt Replacement; Deck Belt Replacement - Ventrac MT720 Operator's Manual & Parts Drawings

Belt Inspection

Inspecting the drive belts of the mower can prevent
sudden belt failure by finding problems before they
cause a belt to break.
Typical wear
on a drive
belt may
result in the
conditions
shown in the
diagram. If
any of these
conditions
occur, the drive belt will require replacement.

Drive Belt Replacement

1. Detach the mower deck from the power unit.
2. Remove the drive
pulley shield (A).
3. Remove the old drive
belt and install the
new drive belt onto the
pulley.
4. Reinstall the drive pul-
ley shield.

Deck Belt Replacement

1. Detach the mower deck from the power unit.
2. Open the main deck cover shield.
3. Remove the ball pin from the belt tensioner
handle and rotate the handle up to release the
belt tension.
4. Remove the belt from the belt tensioner pulley
and slide the loop of the deck belt over the end
of the left hitch arm so that the belt is looped
around the left hitch arm mounting brackets.
SERVICE
5. Remove the left hitch arm mounting bolt and lift the
6. Pull the deck belt out through the opening between
7. Remove the belt from the spindle pulleys, lift up
A 8. Place the new belt over the hitch arms. The front
9. Lift the front of the left hitch arm up away from
10. Reinstall the left hitch arm bolt and nut and
11. Place the belt loop onto the drive shaft pulley
12. Check to ensure the belt is routed properly and
13. Rotate the belt tensioner handle 180 degrees to
Service - 20
hitch arm up away from the mounting brackets.
the hitch arm and the mounting brackets.
slightly on the left and right hitch arms so the rear
loop of the belt clears the hitch arm bumpers, and
remove the belt from around the hitch arms.
of the belt loop goes above the hitch arms and is
installed on the spindle pulleys. The rear of the
belt loop goes under the hitch arms.
the mounting brackets and loop the belt around
the left hitch arm mounting brackets as shown in
the previous pictures.
torque to 151 ft-lbs (205 Nm).
and the belt tensioner pulley.
seated in the groove of each pulley.
engage belt tension and secure with the ball pin.