16 Generac
®
Power Systems, Inc.
4.4 CHECKING FLUID LEVELS
4.4.1 CHECK ENGINE OIL
Check engine crankcase oil level (Figure 4.1) at least
every 20 hours of operation, or prior to use.
• Remove oil dipstick and wipe dry with a clean,
lint-free cloth.
• Install oil dipstick, then remove again.
• Oil should be between FULL and ADD marks.
• If oil level is below the dipstick ADD mark, remove
oil fill cap. Add the recommended oil to bring oil
level up to the FULL mark. DO NOT FILL ABOVE
THE “FULL” MARK. See Section 1.14 for recom-
mended oils.
Figure 4.1 - Oil Dipstick and Oil Fill Cap
4.4.2 BATTERY FLUID
Check battery electrolyte fluid at least once weekly.
Fluid should cover separators in all battery cells. If
fluid level is low, add distilled water to cover tops of
separators. DO NOT USE TAP WATER IN BATTERY.
4.4.3 ENGINE COOLANT
Check coolant level in coolant recovery bottle. See
Specifications, Section 1.10.
• Add recommended coolant mixture as necessary.
• Periodically remove radiator pressure cap to make
sure the coolant recovery system is functioning
properly. Coolant should be at bottom of radiator
filler neck. If coolant level is low, inspect gasket in
radiator pressure cap. Replace cap, if necessary.
To have pressure cap tested, contact an authorized
Generac Service Dealer. Inspect cooling system
and coolant recovery system for leaks.
4.5 MAINTENANCE OWNER/
OPERATOR CAN PERFORM
4.5.1 CHECK ENGINE OIL LEVEL
Refer to “Checking Fluid Levels” in Section 4.4.
4.5.2 CHECK BATTERY
• Check battery fluid level each week as outlined
under “Check Fluid Levels”.
• Check battery cables for condition, tightness, cor-
rosion or damage. Clean, tighten or replace as
necessary.
4.5.3 EXERCISE SYSTEM
Start the generator engine at least once every seven
days and let it run at least 20 minutes. See Section
3.6, “Weekly Exercise Cycle”.
4.5.4 INSPECT COOLING SYSTEM
• Inspect engine cooling system at least once each
month.
• Check hoses for damage, deterioration, leaks, etc.
Correct any discrepancies found.
• Check hose clamps for tightness.
4.5.5 CHECK ENGINE COOLANT LEVEL
See “Checking Fluid Levels” in Section 4.4.
4.5.6 PERFORM VISUAL INSPECTION
Complete a thorough visual inspection of the entire
engine-generator monthly. Look for obvious damage,
loose, missing or corroded nuts, bolts and other fas-
teners. Look for fuel, oil or coolant leaks.
4.5.7 INSPECT EXHAUST SYSTEM
Inspect the exhaust system at least once every three
months. Check all exhaust system pipes, mufflers,
clamps, etc. for condition, tightness, leaks, security,
damage.
4.5.8 CHECK FAN BELT
• Inspect fan belts every three months. Replace any
damaged, deteriorated, worn or otherwise defec-
tive belt.
• Check fan belt tension. Thumb pressure, exerted
midway between pulleys, should deflect about 3/8
to 5/8 of an inch. Adjust belt tension as required.
4.5.9 INSPECT ENGINE GOVERNOR
Visually inspect electronic governor.
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