Bush Hog HDTH5 Operator's Manual page 94

The HDTH5 and HDTH6 Gearboxes are
shipped WITHOUT OIL in the Gearboxes
and must be filled before connecting to the
tractor and placing in operation!
USE 85W / 90 GEAR OIL
Fill Check Plug
1. Remove the Oil Filler/Vent Plug on top the Gearbox.
2. Remove Fill Check Plug on the side of the Gearbox.
3. Add 85W/90 Gear Oil until it starts to run out of the Check Plug hole.
4. Allow enough time for the oil to seep into the lower housing and add additional oil if necessary.
5. Reinstall the vent plug and the check plug.
HDTH 5 & 6 Finish Mower 08/21
© 2021 Alamo Group Inc.
ASSEMBLY
NOTICE!
OIL FILL PROCEDURE
DO NOT OVER FILL GEARBOXES.
Assembly Section 3-2
Oil Filler/Vent Plug