Section 3 – Maintenance
2.When valve clearance is correct, hold the pivot ball stud with the allen wrench and tighten the rocker arm jam nut with a crows foot. Tighten the jam nut to
Figure 3.9 — Tightening Jam Nut
3.14 MAJOR SERVICE MANUAL
To obtain a service manual for the generator, order it from the dealer/distributor. Be sure to identify the unit’s MODEL NUMBER and SERIAL NUMBER.
3.15 EXERCISING THE GENERATOR
Generac recommends that the generator is started and operated at least once every seven days. Let the unit run for at least 30 minutes to “exercise” the engine.
3.16 OUT OF SERVICE PROTECTION
If the generator cannot be exercised every seven days, and it is to be out of service longer than 30 days, pre- pare the generator for storage as follows:
•Start the engine and let it warm up.
•While the engine is still warm from running, drain the oil completely. Refill crankcase with recom- mended oil. See “Specifications.”
•Attach a tag to the engine indicating the viscosity and classification of the oil in the crankcase.
•Remove spark plug and add about 1/2 ounce (15ml) of clean, fresh engine oil into spark plug threaded opening. Crank engine several times to distribute oil, then install and tighten spark plug.
•Remove the battery and store in a cool, dry room on a wooden board. Never store the battery on any concrete or earthen floor.
•Clean and wipe the entire generator.
3.17 RETURN UNIT TO SERVICE AFTER STORAGE
To return the unit to service after storage, proceed as follows:
•Check tag on engine for oil viscosity and classifica- tion. Verify that the correct recommended oil is used in engine. If necessary, drain and refill with proper oil.
•Check battery. Fill all cells to the proper level with distilled water. DO NOT USE TAP WATER IN THE BATTERY. Recharge battery to 100% state of charge, or, if defective, replace the battery.
•Turn OFF all electrical loads, then start the engine.
•Let engine warm up.
•Apply electrical loads up to at least 50% of the unit’s rated wattage capacity.
•When engine is thoroughly warmed up, shut it down.
THE GENERATOR IS NOW READY FOR SERVICE.
Generac® Power Systems, Inc. 13