Service manual

115615 4-9 REV C
unit, the oil level will drop.
2. With the bypass valve closed and the engine running,
slowly move the directional control in both forward and
reverse directions (5 or 6 times). Check the oil level and
add oil as required after stopping the engine.
It may be necessary to repeat Steps 1 and 2 until all the air is
completely purged from the system. When the pumps operate
smoothly forward and reverse at normal speeds, purging is com-
plete.
Tires
It is important for level mowing that the tires have the same
amount of air pressure. The recommended pressures are:
Drive wheels . . . . . . . . . . . . . . . . . . . . . 8-12 psi (55-83 KPa)
Front wheels . . . . . . . . . . . . . . . . . . . . . 8-12 psi (55-83 KPa)
If you wish to use non-pneumatic tires on your BigDog
®
mower the tires must be an approved tire purchased from Big-
Dog
®
Mowers. Warranty claims will be denied on any mower
equipped with unapproved non-pneumatic tires.