Walker MDD (20.9 HP) - Manual (Page 59)

Maintenance Instructions
LUBRICATION/CLEANING
55
3. Reinstall the lower drain plug, making sure the
rubber O-ring on the plug is in place and in
good condition.
4. Refill the transmission through the air bleed
plug hole until it is as full as possible.
IMPORTANT: Avoid fluid contamination when
filling the reservoir. Use clean container, spout,
funnel, etc. when pouring the fluid into the reser-
voir.
5. Rotate the transmission input shaft about five (5)
revolutions to allow any trapped air to escape.
6. Before installing the air bleed plug, fill the reser-
voir with fluid allowing a small amount to leak
out of the air bleed plug hole.
7. Install the air bleed plug and fill the reservoir to
the COLD level line.
CLEANING
Engine Air Cleaner System
There are two main components in the engine air
cleaner system: a turbine precleaner and a Donald-
son Radialseal™ air cleaner. Each component is
checked, cleaned and maintained on a different
schedule based on the filtering action required.
Each component is serviced as follows:
Donaldson
Air Cleaner
Donaldson Air
Cleaner Cover
Hose
Clamp
Precleaner Tube
Turbine Precleaner
Air Restriction
Gauge
Hose
Clamp
Air Intake
Hose
Hose
Clamp
Engine
Safety Filter
Air Cleaner
Cartridge
Vacuator™
Valve
Engine Air Cleaner System Components