Alamo Bush Hog HDC-3 Series, Operator'S Manual

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MAINTENANCE
MAINTENANCE
HDC-3 ZT 05/19 Maintenance Section 6-11
© 2019 Alamo Group Inc.
5. Adjustment is achieved by turning the Adjusting Nuts
at the Rear Deck Hangers on each side of the deck
until the blade tips are at the 3” position.
(Right Hand Side Shown, Fender not shown for clarity.)
6. After the blade tips are at the 3” position on both
sides, place a level on the top of the deck, positioned
front to rear.
7. At the Front Hangers, turn the Adjusting Nuts on each
side to raise or lower the deck until the deck is level.
Do this procedure on both sides of the deck.
8. Once the deck is level on both sides, check the level
of the deck side to side by placing the level on the
front of the deck. Some minor adjustment may be
necessary.
9. After the deck is level on both sides, re-check the
blade tips for the 3” position. Some minor adjustment
may be necessary.
Transaxle Maintenance
This Zero Turn Mower has two Transaxles. The
Transaxles have external filters for ease of maintenance.
To ensure fluid quality and longer life, changing the oil
and filter after the initial 50 hours of Zero Turn Mower
usage then every 400 hours thereafter is recommended.
NOTE: Recommended oil is 20W50 motor oil.
The Zero Turn Mower must be parked on a level sur-
face, parking brake set and bypass lever on each
transaxle applied.
Allow the Zero Turn Mower to cool down before pro-
ceeding to perform maintenance.
Fluid and Filter Change Procedure
1. Remove the three 1/4” filter guard screws and filter
guard. Clean any loose debris from around the perimeter
of the filter.
2. Place an oil drain pan (12” or more diameter and 8 qt.
capacity is optimal) beneath the oil filter. Remove the oil
filter from the transaxle.
3. After the oil has drained, wipe the filter base surface
off and apply a film of new oil to the gasket of the new
replacement filter (Hydro-Gear part number 52114).
(NOTE: WARRANTY IS VOID IF HYDRO GEAR FIL-
TER IS NOT USED.)
4. Install the new filter by hand, turn 3/4 to one full turn
after the filter gasket contacts the filter base surface.
5. Re-install the filter guard with three 1/4” screws. Torque
screws to 65 in. lbs.(7.3 Nm) each.
Adjusting Nut
Deck Hangers
Level
Height Adjusting Knob
Set for 3” cut.