Dixon 44, 44, 44, 36, 36, 42, 42 manual Tracking Adjustment, EZT Transaxle, Anti-scalpRollers

MAINTENANCE

Tracking Adjustment

If the mower is not tracking straight, check the air pressure in both rear tires. Recommended air pressure is 15 psi (1 bar). If the unit will not track straight, follow the steps below. Tracking must be checked on a flat and level concrete or blacktop surface.

Mower is tracking to the right.

Increase the air pressure 2-3 psi (0.1-0.2 bar) in the right rear tire or decrease the air pressure 2/3 psi in the left rear tire.

Mower is tracking to the left.

Increase the air pressure 2-3 psi (0.1-0.2 bar) in the left rear tire or decrease the air pressure 2/3 psi in the right rear tire.

Recheck tracking and keep making adjustments with the tire pressure until the unit tracks straight.

DO NOT exceed maximum recommended tire pressure 24 psi (1.6 bar).

Record the tire pressure for future reference.

EZT Transaxle

Purging Procedure

Due to the effects air has on efficiency in hydrostatic drives, it is critical that it is purged from the system.

Purge procedures should be done any time a hydrostatic system has been opened for maintenance or for adding oil to the system.

Symptoms in hydrostatic systems may be:

1.Noisy operation.

2.Lack of power or drive after short term operation.

3.High operation temperature.

Before starting, make sure the transaxle/transmission is at the proper oil level.

Procedures should be performed with the machine drive wheels off the ground, then repeated under normal operating conditions.

1.With the bypass valve open and the engine running, slowly move the directional control in both forward and.reverse directions (5 or 6 times). As air is purged, the oil level will drop.

2.With the bypass valve closed and the engine running, slowly move the directional control in both forward and reverse directions (5 to 6 times). Check the oil level, and add oil as required after stopping the engine.

3.It may be necessary to repeat Steps 1 and 2 until all the air is completely purged from the system. Purging is complete when the transaxle moves forward and in reverse at normal speed.

Anti-scalp Rollers

Deck has anti-scalp rollers.

Anti-scalp rollers are properly adjusted when they are just slightly off of the ground when the deck is at the desired cutting height in the operating position. Anti- scalp rollers then keep the deck in the proper position to help prevent scalping in most terrain conditions.

IMPORTANT INFORMATION

Adjust anti-scalp rollers with the mower on a flat level surface.

1.Adjust the deck to the desired cutting height (see “To Adjust Deck Cutting Height” in the operation section of this manual).

2.Using a ¾" wrench and a 9/16" wrench, remove the nut and shoulder bolt from the anti-scalp roller.

3.Lower the anti-scalp roller to the ground, and raise it up to the next highest hole.

4.Replace and tighten the nut and shoulder bolt.

5.Be sure to adjust all of the anti-scalp rollers to the same position.

6.Be sure to readjust the anti-scalp rollers if the cutting height is changed.

IMPORTANT INFORMATION

The anti-scalp rollers must not be used for gauge wheels or the roller and deck may be damaged.

DIXON-47