Clean Air Intake; Checking The Engine Spark Plug; Fuel Filter; Clean Spark Arrestor - Generac Power Systems 004709-0 Owner's Manual

Maintenance
3.4

CLEAN AIR INTAKE

Clean all foreign material from the air intake (Figure 3.3) at least
once every 100 hours of operation. Clean more often if neces-
sary.
Inspect the area around the generator exhaust muffler periodically
and remove all grass, leaves, dirt, etc., from this area.
Figure 3.3 – Cleaning Air Intake
USTC USTC
3.5 CHECKING THE ENGINE
SPARK PLUG
Clean the spark plug and reset the spark plug gap every 100 hours
of operation.
1. Clean the area around the base of the spark plug to keep dirt
and debris out of the engine. Remove the spark plug and
check the condition. Replace the spark plug if worn or if reuse
is questionable.
2. Clean spark plug by scraping or washing using a wire brush
and commercial solvent. Do not blast the spark plug to
clean.
3. Check the spark plug gap using a wire feeler gauge. Adjust the
gap to 0.030 inch (0.76 mm) by carefully bending the ground
electrode (Figure 3.4).
Figure 3.4 – Setting the Spark Plug Gap
12
Sparking can occur if the wire terminal does
not fit firmly on the spark plug terminal end.
If necessary, re-form the wire terminal to
obtain a tight fit.
3.6

FUEL FILTER

Remove and replace the fuel filter (Figure 3.5) once each year or
every 400 hours of operation, whichever comes first. Fuel filter is
removed with a 15/16" deep well socket.
Figure 3.5 – Fuel Filter
3.7

CLEAN SPARK ARRESTOR

The engine exhaust muffler has a spark arrestor screen. Inspect
and clean the screen every 50 hours of operation or once each
year, whichever comes first.
If using the generator on any forest-covered, brush-covered or
grass-covered unimproved land, it must equipped with a spark
arrestor. The spark arrestor must be maintained in good condi-
tion by the owner/operator.
• Remove the screen retaining bracket by removing the screw.
• Slide the spark arrestor screen out from the tail pipe.
• Inspect screen and replace if torn, perforated or otherwise
damaged. DO NOT USE a defective screen. If screen is not
damaged, clean it with commercial solvent.
• Replace the screen and the retaining bracket.
POS
FUEL
NEG
NOTE: