New Holland WorkMaster 50 Service Manual page 192

Dropbox - Remove
1. After removing the drive shaft, drain the oil from the
tractor transmission.
(23.314) for the drive shaft removal.
2. Detach the hand lever vertical rod (1) from the drop box
control lever.
3. Remove the mounting bolts (2) and remove the drop
box assembly.
NOTE: Drain the oil from the drop box by removing the
drain plug on the drop box.
Transmission - Dropbox
See Drive shaft - Remove
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