Husqvarna 4421-D Owner's Manual page 42

Engine Oil
1. Full Level 2. Safe Level 3. Low Level
205
Figure 18 Engine Oil Level Check – Kawasaki Gasoline
ENGINE OIL AND FILTER CHANGE
Engine oil and oil filter should be changed:
• Kawasaki gasoline engine after the first 10 hours of operation.
• Kubota diesel engine after the first 50 hours of operation.
After that, the oil should be changed every 100 hours of operation or annually, whichever comes first.
Engine Oil Draining
1. Turn the key switch to the OFF position and remove the key. Place the Forward/Reverse handle in the NEUTRAL
position. Chock the front wheels.
2. Disconnect the battery cables, negative (–) cable first. See WARNING "To avoid unintentionally starting..." in
General Warnings on page 12.
3. Remove the oil filler cap to allow the oil to drain properly.
4. Position a pan designed for oil changes under the drain plug (Figure 20 or Figure 21).
5. From the underside of the vehicle, use a socket or wrench to remove the drain plug (1). Turn the plug
counterclockwise and drain the engine oil into the pan. See following WARNING.
WARNING
• Do not attempt to change engine oil when the engine is hot or even warm. Hot engine oil can cause
skin burns.
• Wear safety glasses or approved eye protection when servicing the vehicle. Wear rubber gloves when
handling oil drain plug, oil filter, and oil drain pan.
6. Clean the oil drain plug threads with solvent to remove oil and oil residue. Make sure that the compression
washer or sealing o-ring remains on the drain plug. Inspect the compression washer or the sealing o-ring
and replace if necessary.
Page 40 2008 HUV 4421 Owner's Manual
Vehicles
1. Full Level 2. Safe Level 3. Low Level
204
Figure 19 Engine Oil Level Check – Diesel Vehicles With
Passenger-side Dipstick