Generac Power Systems 009600-5, 009734-5 3.4CLEAN AIR INTAKE SCREEN, 3.7SPARK ARRESTOR MUFFLER

Section 3 – Maintenance

PRIMEPACT 66G and 66LP Recreational Vehicle Generators

	filter must lock into slots on cover.	Figure 3.5 – Setting the Spark Plug Gap
8.	Install the cover, foam precleaner and paper filter.
9.	Replace knob to retain the filter in place.

Figure 3.3 – Engine Air Cleaner

PAPER FOAM

FILTER PRE-CLEANER

KNOB

COVER

3.4CLEAN AIR INTAKE SCREEN

Clean all foreign material from the air intake screen (Figure 3.4) at least once every 100 hours of opera- tion. Clean more often if necessary.

Inspect the area around the generator exhaust muf- fler periodically and remove all grass, leaves, dirt, etc., from this area.

Figure 3.4 – Cleaning Air Intake

3.5CHECKING 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. Clean by scraping or washing using a wire brush and com- mercial solvent. Do not blast the spark plug to clean.

2.Remove the spark plug and check the condition. Replace the spark plug if worn or if reuse is ques- tionable.

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 3.5).

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.

3.6FUEL FILTER (GASOLINE ONLY)

Remove and replace the fuel filter (Figure 3.6) once each year or every 100 hours of operation, whichever comes first.

Figure 3.6 – Fuel Filter

FUEL FILTER

TO FUEL PUMP

CUSTOMER FUEL CONNECTION

3.7SPARK ARRESTOR MUFFLER

If the generator is not equipped with a spark arrestor exhaust muffler and is to be used on any forest cov- ered, brush covered or grass covered unimproved land, you may have to install a spark arrestor. The spark arrestor must be maintained in effective work- ing order by the vehicle owner/operator.

For assistance in ordering, installing and maintaining spark arrestor exhaust mufflers, contact your nearest Generac Authorized Service Dealer.

Exhaust mufflers supplied by Generac are spark arrestor types. Generac exhaust mufflers for recre- ational vehicle generators do not have a spark arrestor screen, but are of the more efficient “toroid” or “swirl” type. To remove carbon and combustion deposits from such mufflers, remove the plug from the muffler and run the engine for approximately 15 minutes. Shut down the engine, let the muffler cool and install the plug.

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