GB - 22
Purging the Hydraulic System
NOTE: Purge the system of air any time the
transaxle has been opened for maintenance
or when oil has been added to the system.
1. Make sure the transaxles are filled to the
proper oil level.
2. With the unit up to and facing a wall, jack
up the unit so that both drive wheels are
off the ground.
3. Disengage the parking brake and put the
transaxle bypass valves in the neutral
position. See Moving the Unit with the
Engine Off on page 17.
4. Start the engine and slowly move the
steering levers in forward and reverse
five or six times. The oil level will drop.
5. Stop the engine and put the transaxle
bypass valves in the drive position. See
Moving the Unit with the Engine Off on
page 17.
6. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
7. Stop the engine, check the hydraulic oil
level and add oil as needed.
8. Repeat steps 3–7 until the transaxles
operate smoothly in forward and reverse
at normal speeds without excessive
noise.
MOWER BLADES
Remove
1. Turn the engine off. Remove the ignition
key. Remove the ignition wire from the
spark plugs.
2. Remove the bolts, cup washer, and
blades from the spindle shafts.
Replace
1. Put the blades, cup washers, and the
bolts back on the spindle shafts.
2. Tighten the bolts to a torque of 115-
160 lbf-ft (156-217 N•m).
3. Replace the ignition wire on the spark
plugs.
WARNING: This adjustment
requires operating the engine. Use
extreme care to avoid contact with
moving parts and hot surfaces. Be
sure rear of unit is well supported
and secure before starting engine.
Figure 8
1. Drain Plug
2. Oil Filter
3. Filter Cover
4. O-Ring
CAUTION: Use sturdy gloves or
padding to protect hands when
working with mower blades.
Figure 9
1. Blade
2. Cup Washer
3. Bolt
