Deck Belt Tension Adjustment; Deck Leveling Procedure - Ventrac MT720 Operator's Manual & Parts Drawings

Deck Belt Tension Adjustment

If the deck belt slips during normal mowing opera-
tion, the belt tension will need to be adjusted.
1. Park the power unit on a smooth level surface
and lower the mower deck to the ground.
2. Engage the parking brake, shut off the engine,
and remove the key from the ignition switch.
3. Open the main deck cover shield.
4. Remove the ball pin from the belt tensioner
handle and rotate the handle up to release the
belt tension.
5. Move the extension spring hook into the next
chain link closer to the belt tensioner handle.
Move spring
hook to the
next chain link
6. Rotate the belt tensioner handle down to engage
belt tension and secure with the ball pin.
7. Close the main deck cover shield.
SERVICE

Deck Leveling Procedure

Mower blades may be sharp. Always wear heavy
gloves when working with mower blades.
1. Place the mower deck on a hard surface that is
clean and level.
2. Place the mower deck height adjustment handle
into position # 18.
3. Ensure both front tires are inflated to the recom-
mended tire pressure.
4. Block the tires and rear roller to prevent the mower
deck from rolling during leveling procedure.
5. Check the mower blades to make sure they are
not bent.
6. Starting at either side of the mower deck, turn
the blade so the cutting tip is at the back of the
deck. Measure the distance from the flat surface
to the blade tip.
7. Move to the opposite
side of the mower
deck and turn that
blade so the cutting
tip is at the back of
the deck. If this
distance measures
differently from the
first side, adjust the
height adjustment
linkage (A) directly
above on the top side
of the deck until the
measurement is the
same as the first side.
8. Once the deck has been leveled side to side,
rotate the same blade tip to the front of the deck
and measure. The blade tip should be level to
1/8" (3 mm) lower at the front. If the measurement
at the front of the deck is higher or more than 1/8"
(3 mm) lower, the deck must be leveled.
Service - 21
CAUTION
A