Generac DUARDIAN 04077-2 - Manual (Page 14)

Section 3 — M aintenance
MAINTENANCE Guardian Air-cooled 6 kW, 8 kW and 10 kW Generators
3.4 CHANGING THE OIL FILTER
Change the engine oil filter as follows:
1. With the oil drained, remove the old oil filter by
turning it counterclockwise.
2. Apply a light coating of clean engine oil to the
gasket of the new filter. See section 1.7.2 (page
6) for recommended filter.
3. Screw the new filter on by hand until its gasket
lightly contacts the oil filter adapter. Then,
tighten the filter an additional 3/4 to one turn
(Figure 3.4).
4. Refill with the proper recommended oil (see sec­
tion 3.3.1). See section 1.7.2 (page 6) for oil
capacities.
5. Start the engine and check for leaks.
Figure 3.4
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Engine Oil Filter
3.5 CHANGING THE ENGINE
AIR CLEANER
3.5.1 6 KW GENERATORS
See Figure 1.1 (page 5) for the location of your air
cleaner. Clean and reoil the foam precleaner every
three months or every 25 hours of operation,
whichever occurs first. Service the foam precleaner
more frequently if you operate the generator in
extremely dusty or dirty conditions. Use the follow­
ing procedure (Figure 3.5):
1 .
2 . 3.
4.
5.
7.
8 .
9.
Turn the two screws counterclockwise to loosen.
Remove the cover, foam precleaner and paper filter.
Remove the foam precleaner from the cover.
Wash the foam precleaner in liquid detergent
and water.
Wrap the foam precleaner in a clean cloth and
gently squeeze it dry.
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).
Install the foam precleaner into the cover, fol­
lowed by the paper filter.
Install the cover, foam precleaner and paper filter.
Tighten the two screws to retain the filter in place.
See the “Service Schedule,” section 3.12 (page 15)
for air cleaner maintenance. See section 1.7.1 for
air filter replacement part number.
Figure 3.5
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6 kW Engine Air Cleaner
♦ 3.5.2 8 KWAND 10 KW GENERATORS_____
To replace the engine air cleaner, simply loosen the
hose clamp. This air cleaner should NOT be cleaned
and reused. See section 1.7.1 for air filter replace­
ment part number.
3.6 SPARK PLUG(S)
Reset the spark plug(s) gap or replace the spark
plug(s) as necessary. See section 3.12 for mainte­
nance requirements.
1. Clean the area around the base of the spark
plug(s) to keep dirt and debris out of the engine.
Clean by scraping or washing using a wire
brush and commercial solvent. Do not blast the
spark plug(s) to clean.
2. Remove the spark plug(s) and check the condi­
tion. Replace the spark plug(s) if worn or if reuse
is questionable. See section 3.12 (page 15) for rec­
ommended Inspection.
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Generac* Power Systems, Inc.