MAINTENANCE
CHANGING ENGINE OIL
1. Stop the engine.
2. Let engine sit and cool for several minutes (allow
crankcase pressure to equalize).
3. Remove the engine service panel to gain access to the
oil fill/drain plug.
4. Remove oil access insert.
5. Place oil pan (or suitable container) under the oil drain
hole (see Figure 13).
Figure 13: Place Oil Pan Under Oil Drain Hole
6. With a damp rag, thoroughly clean around the oil fill/
drain plug.
7. Tilt the inverter so the oil drains down through the hole
in the bottom of the inverter into the container.
8. Allow oil to completely drain.
9. Fill crankcase with oil following the steps outlined in
Adding Engine Oil.
10. Dispose of used engine oil properly.
NOTICE
Never dispose of used engine oil by dumping the oil
into a sewer, on the ground, or into groundwater or
waterways. Always be environmentally responsible.
Follow the guidelines of the EPA or other governmental
agencies for proper disposal of hazardous materials.
Consult local authorities or reclamation facility.
20 | Westinghouse Outdoor Power Equipment
Oil Pan
AIR FILTER MAINTENANCE
WARNING
Never use gasoline or other flammable
solvents to clean the air filter. Use only
household detergent soap to clean the
air filter.
Cleaning the Air Filter
The air filter must be cleaned after every 50 hours of
use or 3 months (frequency should be increased if
inverter is operated in a dusty environment).
1. Turn off the inverter and let it cool for several
minutes if running.
2. Remove the engine service panel to gain access to
the air filter.
3. Unscrew the air cleaner cover and tip the cover
down (see Figure 14).
Figure 14: Remove Air Filter Screw
4. Remove the foam element from the air cleaner
housing.
5. Wash the foam air filter element by submerging
the element in a solution of household detergent
soap and warm water. Slowly squeeze the foam to
thoroughly clean.
NOTICE
NEVER twist or tear the foam air filter element during
cleaning or drying. Only apply slow but firm squeezing
action.
6. Rinse in clean water by submerging the air filter el-
ement in fresh water and applying a slow squeezing
action (see Figure 15).