Generac Power Systems QT05030AVAN, Owner'S Manual

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After refilling the crankcase with oil, always
check oil level on dipstick. NEVER OPERATE
ENGINE WITH OIL BELOW THE DIPSTICK
“ADD” MARK.
7. Start engine and check for oil leaks.
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.
See the “Service Schedule” section for air cleaner maintenance.
SPARK PLUGS
Reset the spark plug gap or replace the spark plugs as neces-
sary.
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 1.01 mm (0.040 inch) by carefully bending the ground
electrode (Figure 10.3).
Figure 10.3 – 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 cool-
ing system recommendations.
MISCELLANEOUS MAINTENANCE
CLEANING THE GENERATOR
Keep the generator as clean and as dry as possible. Dirt and
moisture that accumulates on internal generator 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.
Finally, have the insulation resistance of stator and rotor windings
checked. If insulation resistances are excessively low, the genera-
tor may require drying.
BATTERY
All lead-acid storage batteries discharge when not in use. Refer to
specific instructions and warnings that accompany the battery. If such
information is not available, observe the following precautions when
handling a battery:
DO NOT use jumper cables and a booster battery to crank or •
start the generator engine.
DO NOT recharge a weak battery while it is installed in the gen- •
erator. Remove battery from generator and recharge in a well-
ventilated area, away from fuel vapors, sparks, heat or flames.
Battery electrolyte fluid is an extremely caustic •
sulfuric solution that can cause severe burns. DO NOT permit
fluid to contact eyes, skin, clothing, painted surfaces, wiring
insulation, etc. If any battery fluid is spilled, flush the affected
area with clear water immediately.
Always wear safety glasses, rubber apron and gloves when •
handling a battery.
Batteries give off explosive hydrogen gas while •
charging. The gas can form an explosive mixture around the
battery for several hours after charging. Any spark, heat or
flames can ignite the gas and cause an explosion which can
shatter the battery, causing blindness or other serious injury.
BATTERY MAINTENANCE
The battery should be inspected per the “Service Schedule” sec-
tion. The following procedure should be followed for inspection:
1. Inspect the battery posts and cables for tightness and corro-
sion. Tighten and clean as necessary.
2. Check the battery fluid level of unsealed batteries and, if nec-
essary, fill with DISTILLED WATER ONLY. DO NOT USE TAP
WATER IN BATTERIES.
3. Have the state of charge and condition checked. This should
be done with an automotive-type battery hydrometer.
SET PLUG GAP AT 1.01 mm
(0.040 inch)
10-3
Maint001 Rev . A 07/10
Maintenance