HydraMaster RX-20 700-041-006, Owner'S Manual, Page: 26 / 52

Machine Maintenance: 6-4
RX-20
PERIODIC MAINTENANCE
Check the oil level in the gear box on a monthly basis. This is a permanently lubricated
gear box. you do not need to change the oil. However, maintaining the proper oil level is
important.
To check the oil level, remove the vent plug and look into the gear box. Turn the star until
you can see the inspection hole in the gear. When the RX-20 is sitting flat on a table or
the floor, the oil level should be up to, but not above, the middle of the gear. If oil needs to
be added, use a quality 80-90 weight gear oil.
When checking the oil level in the gear box, you can use a toothpick as a dip stick.
The oil level should read 3/8” deep.
Locking Mechanism
If the locking mechanism becomes loose and
fails to hold the handle in position, tighten it
by following these simple steps:
Remove the retaining clip from one 1.
wheel, using a flat-bladed screwdriver
(see figure 6-8).
Remove the wheel from
2. one side of
the unit.
Ensure that the clamp is set to the
3.
locking position.
Tighten the setscrew as shown in
4.
figure 6-9 to achieve the desired
clamping force.
Re-install the wheel and retain with the
5.
original clip.
If the locking mechanism becomes
6.
loose again in the future, remove the
wheel on the other side of the unit and
tighten the other setscrew, in order
to even up the wear on the clamping
pins.
Remove Retaining Figure 6-8.
Clip with Screwdriver
Tighten Setscrew Figure 6-9.