Generac 00784-2, 09290-4 owner manual Maintaining the Engine AIR Cleaner, Clean AIR Intake Screen

Section 3 – Maintenance

PRIMEPACT 50 and 70 (50Hz) Recreational Vehicle Generators

3.3MAINTAINING THE ENGINE AIR CLEANER

◆3.3.1 CLEANING THE FOAM PRECLEANER

Clean and re-oil the foam precleaner every three months or every 25 hours of operation, whichever occurs first. Service the foam precleaner more fre- quently if operating the generator in extremely dusty or dirty conditions. Use the following procedure (Figure 3.3):

1.Turn the knob counterclockwise to loosen.

2.Remove the cover, foam precleaner and paper filter.

3.Remove the foam precleaner from the cover.

4.Wash the foam precleaner in liquid detergent and water.

5.Wrap the foam precleaner in a clean cloth and gently squeeze it dry.

6.Saturate the foam precleaner in clean engine oil. Gently squeeze it in a clean cloth to remove excess oil and to distribute oil (DO NOT TWIST).

7.Install the foam precleaner into the cover, fol- lowed by the paper filter. Tabs at edges of paper filter must lock into slots on cover.

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

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).

Figure 3.5 – Setting the Spark Plug Gap

COVER

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.

12 Generac® Power Systems, Inc.