Service Manual

MOWER DECKS

7-79Z580/Z589 DFI Z Master Service Manual

63. Fill the gearbox with 6 oz. (.15 liters) of 75W-90

synthetic gear oil with anti-foaming agent until it

starts to ow out of the oil plug hole (Fig. 827).

Fig 827 IMG-8574a

64. Install the ll and drain plugs so they are ush with

or below the housing mounting surfaces (Fig. 828).

Fig 828 IMG-8578a

Leveling the Mower

Setting up the Machine

1. Position mower on a at surface.

2. Disengage the PTO, move the motion control levers

to the neutral locked position and set the parking

brake.

3. Stop the engine, remove the key, and wait for all

moving parts to stop before leaving the operating

position.

4. Check the tire pressure of all four tires. If needed,

adjust to 13 psi (90 kPa).

5. Lower the mower to the 3” (76mm) height-of-cut

position.

6. Inspect the four chains. The chains need to have

tension.

• If one rear chain is loose, lower (loosen) the front

support arm on the same side. Refer to “Adjusting

the Front-to-Rear Mower Pitch” on page 7-81.

• If one front chain is loose, raise (tighten) the front

support arm for that chain. Refer to “Adjusting the

Front-to-Rear Mower Pitch” on page 7-81.