Generac Power Systems 004916-0 - Manual (Page 17)

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Section 4 — Maintenance
Air-cooled 11 kW Generators

Any attempt to crank or start the engine before
it has been properly serviced with the recom-
mended oil may result in an engine failure.
4.3.2 OIL CHANGE PROCEDURE
To change the oil, proceed as follows:
1. Run the engine until it is thoroughly warmed up
then shut OFF the engine.
2. Immediately after the engine shuts OFF, pull the
oil drain hose (Figure 4.3) free of its retaining
clip. Remove the cap from the hose and drain the
oil into a suitable container.
3. After the oil has drained, replace the cap onto the
end of the oil drain hose. Retain the hose in the
clip.
4. Refill with the proper recommended oil (see
Section 4.3.1). See Section 1.6.2 for oil capaci-
ties.
Figure 4.3 – Oil Drain Hose and Filter
Oil Filter Oil Drain Hose
4.4 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 1.6.1 for rec-
ommended 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
4.3).
4. Refill with the proper recommended oil (see
Section 4.3.1). See Section 1.6.2 for oil capaci-
ties.
5. Start the engine and check for leaks.
‹
4.5 CHANGING THE ENGINE
AIR CLEANER
See Figure 1.3, for the location of the air cleaner. Use
the following procedure (Figure 4.4):
1. Turn the two screws counterclockwise to loosen.
2. Remove the cover and air filter.
3. Wipe away dust or debris from inside of the air
box and around edges.
4. Install the new air cleaner into the air box.
5. Install the cover. Turn the two cover screws clock-
wise to tighten.
See the “Service Schedule,” Section 4.13, for air
cleaner maintenance. See Section 1.6.1 for air filter
replacement part number.
Figure 4.4 — Engine Air Cleaner
Screw
Cover
Filter
4.6 SPARK PLUGS
Reset the spark plug gaps or replace the spark plugs
as necessary. See Section 4.13 for maintenance
requirements.
1. Clean the area around the base of the spark plugs
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 plugs
to clean.
2. Remove the spark plugs and check the condition.
Replace the spark plugs if worn or if reuse is
questionable. See Section 4.13 for recommended
inspection.
3. Check the spark plug gap using a wire feeler
gauge. Adjust the gap to 0.76 mm (0.030 inch)
by carefully bending the ground electrode (Figure
4.5).
Loosen