Changing The Engine Air Cleaner; Spark Plugs; Coolant Change; Miscellaneous Maintenance - Generac Power Systems QT 5.4L Owner's Manual

7. Start engine and check for oil leaks.
Figure 10.2 - Oil Filter

CHANGING THE ENGINE AIR CLEANER

To replace the engine air cleaner, (part number
0A4637), remove the air cleaner cover and replace
the air filter making sure it is positioned properly
before reattaching the cover.
Figure 10.3 — Engine Air Filter
See the "Service Schedule" section for air cleaner
maintenance.
Standby Generator Sets
Oil
Dipstick
Oil Filter
Air Filter
Maintenance

SPARK PLUGS

Reset the spark plug gap or replace the spark plugs
as necessary.
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 the "Service Schedule" section
for recommended inspection.
3. Check the spark plug gap using a wire feeler
gauge. Adjust the gap to 1.14 mm (0.045 inch)
by carefully bending the ground electrode (Figure
10.4).
Figure 10.4 – Setting the Spark Plug Gap

COOLANT CHANGE

Every year, have an Authorized Service Facility
drain, flush and refill the cooling system. See the
"Specifications" section for cooling system recom-
mendations.

MISCELLANEOUS MAINTENANCE

CLEANING THE GENERATOR

Keep the generator as clean and as dry as possible.
Dirt and moisture that accumulates on internal gen-
erator windings have an adverse effect on insulation
resistance.
Periodically clean generator exterior surfaces. A soft
brush may be used to loosen caked on dirt. Use a
vacuum system or dry, low pressure air to remove
any accumulations of dirt. The generator is housed
inside an all-weather enclosure, clean the enclosure
with a soft, damp cloth or sponge and water.
Once each year, have the generator cleaned and
inspected by an Authorized Service Dealer. That
dealer will use dry, low pressure air to clean internal
windings. Parts inside the control console should be
cleaned and inspected at this time as well.
10-3
SET PLUG GAP AT 1.14 mm
(0.045 inch)
08/05 0 Rev. Maint003