PAGE 18
CHANGING YOUR HYDRAULIC OIL AND FILTER
(CONTINUED)
10.
Fill with 20W-50 motor oil (Bad Boy Hydrostatic
oil is recommended) through the hydraulic fluid
reservoirs until it just appears at the bottom of
each transaxle’s top port (approximately 2 quarts
per transaxle, 4 quarts total). Install the top port
plug into each transaxle as the oil level reaches
this port.
11.
Install and torque the top port plugs to 180 in. lbs.
(20.3 Nm).
12.
Continue to fill the transaxle through the
hydraulic fluid reservoirs until the “Full Cold” line
is reached on the hydraulic fluid reservoirs.
13.
Re-install the caps on the hydraulic fluid
reservoirs.
14.
To purge the air from the transaxles, pull the
neutral bypass rods located on each side of the
muffler, and pin them into place. Lift the rear of
the mower slightly off the ground and start the
engine.
15.
Release parking brake, then slowly move the
drive arms in the forward and reverse directions
5 to 6 times.
16.
Take note the muffler will be hot. Push the
neutral bypass levers back into place. Move the
drive arms forward and backward 5 to 6 times
slowly. Check the oil level and add oil as required
after stopping the engine.
17.
It may be necessary to repeat steps 15 and 16
until all the air is completely purged from the
system. When the transaxle operates at normal
noise levels and moves smoothly forward and
backward at normal speeds, then the transaxle is
considered purged.
Cold Fill Line
Top Port Plug
Fig. 8
Fig. 9
Fig. 10
Fig. 11
