GB - 20
Purging the Hydraulic System
1. With the unit up to and facing a wall, jack
up the unit so that both drive wheels are
off the ground.
2. Disengage the parking brake and put the
transaxle bypass levers in the neutral
position. See Moving the Unit with the
Engine Off on page 15.
3. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
4. Stop the engine and put the transaxle
bypass levers in the drive position. See
Moving the Unit with the Engine Off on
page 15.
5. Start the engine and slowly move the
steering levers in forward and reverse
five or six times.
6. Stop the engine, check the oil level and
add oil as needed.
7. Repeat steps 2–6 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 Guard
4. Mounting Hardware
CAUTION:
Use sturdy gloves or
padding to protect hands when
working with mower blades.
Figure 9
1. Blade
2. Cup Washer
3. Bolt
