Section 3 — Maintenance
Guardian
MAINTENANCE OWNER/OPERATOR CAN PERFORM
CHECK ENGINE OIL LEVEL
Refer to “Checking Fluid Levels” on page 15.
CHECK BATTERY
•Check battery fluid level each week as outlined under “Check Fluid Levels”.
•Check battery cables for condition, tightness, corro- sion or damage. Clean, tighten or replace as necessary.
EXERCISE SYSTEM
Start the generator engine at least once every seven days and let it run at least 20 minutes. See page 14, “Weekly Exercise Cycle”.
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.
CHECK ENGINE COOLANT LEVEL
See “Checking Fluid Levels” on page 15.
DANGER: Do not attempt to adjust the gover- nor. Only qualified service facilities should adjust the governor. Excessively high operating speeds are dangerous and increase the risk of personal injury. Low speeds impose a heavy load on the engine when adequate engine power is not available and may shorten engine life. Correct rated frequency and voltage are supplied only at the proper governed speed. Some connected electrical load devices may be damaged by incorrect frequency and/or voltage. Only qualified service technicians should adjust the governed speed.
CHANGING ENGINE OIL
Refer to maintenance performed by authorized service facilities for engine oil and filter change frequencies.
Drain the oil while the engine is still warm from run- ning. This means warm up the engine, shut it down and drain immediately as follows:
1.Remove OIL DRAIN HOSE from its retaining clip.
2.Loosen and remove OIL DRAIN HOSE CAP. Drain oil completely into suitable container.
3.When all oil has drained, install and tighten OIL DRAIN HOSE CAP, and
4.Turn OIL FILTER (Figure 12) counterclockwise and remove. Dispose of old filter.
Figure 12 - Oil Filter
PERFORM VISUAL INSPECTION
Complete a thorough visual inspection of the entire
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.
CHECK FAN BELT
•Inspect fan belts every three months. Replace any damaged, deteriorated, worn or otherwise defective belt.
•Check fan belt tension. Thumb pressure, exerted midway between pulleys, should deflect about 3/8 to 3/4 inch. Adjust belt tension as required.
INSPECT ENGINE GOVERNOR
Visually inspect electronic governor.
OIL FILTER
5.Apply light coating of new engine oil to seal of new oil filter. Install FILTER and tighten by hand only.
DO NOT OVERTIGHTEN.
6.Remove OIL FILL CAP (Figure 11, page 15). Add recommended oil (see SPECIFICATIONS). DO NOT FILL ABOVE THE DIPSTICK “FULL” MARK. Crankcase oil capacity is 4.0 U.S. quarts (3.8 liters)
16 Generac® Power Systems, Inc.
