42
Changing the Gearbox Fluid
The gearbox fluid must be changed after first 100
operating hours. Change all three gearboxes.
Important Do not mix fluids. Use only specified fluid
on page 41.
1. Warm the fluid in gearbox. Run the mower deck for a
few minutes.
2. Tilt mower into the vertical position, refer to; Tilting
the Mower, page 19.
3. With deck raised, remove plug on the bottom side of
the gearbox. Let fluid fully drain into a pan. (Fig. 75).
4. Reinstall the bottom plug into the gearbox. Use pipe
thread sealant if needed (Fig. 75).
5. Remove the top plug to fill gearbox (Fig. 75).
6. Fill gearbox with 5–1/2 oz of fluid.
7. Reinstall the top plug into the gearbox (Fig. 75).
8. Repeat for remaining gearboxes.
3
4
1
1
3
3
4
m–4857
2
2
Figure 75
1. Gearbox
2. Top plug
3. Side plug
4. Bottom plug
Checking the Gearbox Fluid
The gearbox fluid must be checked after every 100
operating hours. Check all three gearboxes.
1. Warm the fluid in gearbox. Run the mower deck for a
few minutes.
2. Tilt mower into the vertical position, refer to; Tilting
the Mower, page 19.
3. Remove plug on the side of the gearbox. The fluid
level must be up to side hole in gearbox (Fig. 75).
4. If needed, fill fluid into top hole until it runs out the
side hole in gearbox. It is full when it runs out the side
hole (Fig. 75).
Important Do not mix fluids. Do not overfill
gearboxes.
5. Reinstall the top and side plugs into gearbox using
pipe sealant (Fig. 75).
6. Fill gearbox with fluid.
7. Repeat for remaining gearboxes.
Replacing the Castor Wheel
Fork Bushings
The castor wheel forks are mounted in bushings pressed
into the top and bottom of the carrier frame castor tubes.
To check the bushings, move the castor forks back and
forth and side-to-side. If a castor fork is loose, the
bushings are worn and must be replaced.
1. Tilt mower into the vertical position, refer to; Tilting
the Mower, page 19.
2. Remove the cap, thrust washer and 1/2 inch spacer
from the top of the castor wheel fork (Fig. 76).
3
2
1
2
5
m–4182
4
Figure 76
1. Cap
2. Washer
3. Spacer, 1/2 inch (New)
4. Spacer, 1 inch
5. Caster Wheel Fork
3. Pull the castor wheel fork out of the mounting tube,
leaving the 1 inch spacer and thrust washers on the
fork. Remember the location of thrust washers on each
fork to ensure correct installation, and to maintain a
level deck.
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