GENERAC Air-Cooled Generator GUARDIAN 20KW

Replace the Oil and Oil Filter. Change engine oil and filter after the first 25 hours of operation. In cold weather conditions (ambient below 40 °F / 4.4 °C), or if unit is operated continuously in hot weather conditions (ambient above 85 °F / 29.4 °C), change engine oil and filter every year or 100 hours of operation.

Did you start the engine and run it until it is thoroughly warmed up?

Did you press the control panel OFF button to shut down the engine?

Did you lift the lid and remove the front panel?

Did you pull the oil drain hose (A) free of its retaining clip?

Did you remove the cap from the hose and drain the oil into a suitable container?

Did you replace the cap after the oil has drained?

Did you reposition and secure the hose with the retaining clip?

Did you remove the old oil filter (B) by turning it counterclockwise?

Turn the generator fuel supply off

Use a clean-out tool to remove accumulated moisture and particles from the cap and body (B)

Wipe the inside of each component with a clean, dry, lint-free cloth

Seal the threads of the cap with appropriate sealing compound. Install the cap and hand-tighten

Press the OFF button on the control panel to stop the generator. Then lift the lid and remove the front panel

Remove the cover clips (A) and air cleaner cover

Remove the old air filter element (C) and discard

Thoroughly clean the air cleaner enclosure of any dust or debris

Install a new air filter element

Install the air cleaner cover and fasten the cover clips

Verify that the air inlet duct (D) is properly connected to the air cleaner cover

Press the AUTO button on the control panel to return the unit to AUTO mode

Sign off on the air cleaner service

WARNING: Risk of burns. Allow engine to cool before draining oil or coolant. Failure to do so could result in death or serious injury.

CAUTION: Engine damage. Verify proper type and quantity of engine oil prior to starting engine. Failure to do so could result in engine damage.

Check enclosure louvers for dirt and debris

Remove any shrubs or tall grasses within 3 ft of the intake and discharge louvers

Clean any debris inside the enclosure

Check lines and connections for fuel or oil leaks

The oil level should be checked daily when power outages necessitate running the generator for extended periods.

Run the generator for a cool-down period of approximately one minute

Warning: Please contact an IASD for service assistance. Proper valve clearance is essential for prolonging the life of the engine.

Engine is cool before checking the valve clearance

Valve clearance is within the dimensions provided in Specifications

Fuel valve closed and battery disconnected to avoid accidental start-up

Spark plug wires removed and positioned away from plugs

Four screws attaching the valve cover removed. Gasket discarded

Piston is at top dead center (TDC) of its compression stroke (both valves closed)

Valve clearance between the rocker arm and valve stem checked with a feeler gauge