Section 4 — Maintenance
Guardian
4.4CHECKING 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,
•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
OIL
DIPSTICK
OIL
FILL
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.
4.5MAINTENANCE 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
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 inch. Adjust belt tension as required.
4.5.9 INSPECT ENGINE GOVERNOR
Visually inspect electronic governor.
16 Generac® Power Systems, Inc.