Spark Plug Maintenance; Spark Arrestor Service - Westinghouse WGen9500DFc User Manual

MAINTENANCE
1. Using a 10mm wrench, remove the oil drain bolt and
allow the oil the to drain.
Drain bolt
Oil pan
2. Install the oil drain bolt and tighten securely.
Note: A new oil drain plug crush washer is recommended
at each oil change.
3. Slowly pour oil into the oil filler neck until oil the level
is between the L and H marks on the dipstick. Stop
frequently to check the oil level. DO NOT overfill.
Maximum oil capacity: 1.16 Quart (1.1 Liter)
4. Install the oil dipstick and hand-tighten.
DO NOT pollute. Follow the guidelines of the EPA or other
governmental agencies for proper disposal of hazardous
materials. Consult local authorities or reclamation facility.

SPARK PLUG MAINTENANCE

ALWAYS use the Westinghouse OEM or compatible
non-resistor-type spark plug. Use of resistor-type spark
plug can result in rough idling, misfire, or may prevent
the engine from starting.
Inspect and clean the spark plug after every 100 hours of
use or six months. Replace the spark plug after 300 hours
of use or every year.
1. Place the generator on a level surface and allow the
engine to cool.
2. Remove the spark plug boot by firmly pulling the spark
boot directly away from the engine.
3. Clean the area around the spark plug.
4. Remove the spark plug with the included spark plug
socket wrench.
NEVER apply any side load or move the spark plug
laterally when removing the spark plug.
26 | Westinghouse Outdoor Power Equipment, LLC
NOTICE
NOTICE
NOTICE
5. Inspect the spark plug. Replace if electrodes are
pitted, burned, or the insulator is cracked. Only use a
recommended replacement plug.
6. Measure the spark plug electrode gap with a wire-type
feeler gauge. If necessary, correct the gap by carefully
bending the side electrode.
Spark plug gap: 0.024 – 0.032 in. (0.60 – 0.80 mm)
Side
Electrode
Insulator
7. Carefully install the spark plug finger tight, then tighten
as additional 3/8 to 1/2 turn with the spark plug wrench.
8. Attach the spark plug boot.

SPARK ARRESTOR SERVICE

Allow the muffler to cool completely before servicing the
spark arrestor. Check and clean the spark arrestor after
every 100 hours of use or six months. Failure to clean the
spark arrestor will result in degraded engine performance.
1. Place the generator on a level surface.
2. Remove the cover screws and the muffler cover. Use a
screw driver to remove the spark arrestor.
3. Carefully remove the carbon deposits from the spark
arrestor screen with a wire brush. The spark arrestor
must be free of breaks and tears. Replace the spark
arrestor if damaged.
4. Reinstall the spark arrestor and muffler cover.
0.024 - 0.032 in.
(0.60 - 0.80 mm)