Section 3 – Maintenance

4.Attach a tag to the engine indicating the viscosity and classification of the oil in the crankcase.

5.Remove the spark plug and pour two or three tablespoons of clean, fresh engine oil into the spark plug threaded openings. Reinstall and tighten the spark plug.

6.Remove the battery and store it in a cool, dry room on a wooden board. Never store the battery on any concrete or earthen floor.

7.Clean and wipe the entire generator.

‹3.12.2 RETURN TO SERVICE

To return the unit to service after storage, proceed as follows:

1.Check the tag on the engine for oil viscosity and classification. Verify that the correct recom- mended oil is used in the engine (see "Engine Oil Requirements"). If necessary, drain and refill with the proper oil.

2.Check the state of the battery. Fill all cells of unsealed batteries to the proper level with dis- tilled water. DO NOT USE TAP WATER IN THE BATTERY. Recharge the battery to 100 percent state of charge, or, if defective, replace the battery.

3.Clean and wipe the entire generator.

4.Reconnect the battery. Observe battery polarity. Damage may occur if the battery is connected incorrectly.

5.Turn OFF all electrical loads. Add fuel if neces- sary and then start the engine.

6.Allow the unit to run for several minutes to warm up.

7.Apply electrical loads to at least 50 percent of the unit’s rated wattage capacity.

8.When the engine is thoroughly warmed up, shut it down.

9.The generator is now ready for service.

3.13 ADJUSTING VALVE CLEARANCE

After the first 50 hours of operation, adjust the valve clearance in the engine.

When adjusting valve clearance, the engine should be at room temperature and the piston should be at Top Dead Center (TDC) of its compression stroke (both valves closed). Correct clearance is 0.001-0.003 inch

(0.03-0.07mm). Adjust valve clearance as follows:

1.Loosen the rocker arm jam nut. Use an allen wrench to turn the pivot ball stud while checking clearance between the rocker arm and the valve stem with a feeler gauge (Figure 3.7).

Recreational Vehicle Generator

Figure 3.7 — Adjusting Valve Clearance

FEELER GAUGE

ALLEN WRENCH

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 65-85 inch-pounds torque. After tightening the jam nut, recheck valve clearance to make sure it did not change (Figure 3.8).

Figure 3.8 — Tightening Jam Nut

CROW'S

FOOT

3.14 RV GENERATOR SERVICE INTERVAL

50 Hours

Clean Spark Arrestor

100 Hours

Change Engine Oil/filter

100 Hours

Clean Air Pre-filter

100 Hours

Inspect Spark Plugs

250 Hours

Replace Paper Air Filter Element

400 Hours

Replace Fuel Filter

500 Hours

Replace Spark Plugs

1st 50 Hours-then

 

every 500 Hrs

Adjust Valve Lash

15

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Generac Power Systems 004709-0 Adjusting Valve Clearance, RV Generator Service Interval, ‹ 3.12.2 Return to Service
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004709-0 specifications

Generac Power Systems has established itself as a leader in the home backup generator market with its innovative products, and the Generac 004709-0 is no exception. Designed for homeowners seeking reliable power solutions during outages, this generator ensures peace of mind and uninterrupted operation for essential appliances and electronics.

One of the primary features of the Generac 004709-0 is its robust power output. With a powerful 7,500 running watts and a surge capacity of 9,000 watts, it can efficiently handle large loads, including central air conditioning units, refrigerators, and heat pumps. This generator operates on gasoline, providing an accessible fuel source readily available at most retail locations.

Equipped with a durable 420cc engine, the 004709-0 combines efficiency with exceptional performance. It features a low-oil shutdown system, which safeguards the engine from damage by automatically shutting off when oil levels become critically low. This feature ensures longevity and reliability, making it a dependable choice for homeowners.

The portability of the Generac 004709-0 is another notable characteristic. Weighing approximately 130 pounds, it comes with a built-in handle and sturdy wheels for easy transportation. This feature allows users to move the generator effortlessly from storage to the desired location, which is especially convenient during an emergency.

In addition to power and portability, the Generac 004709-0 boasts user-friendly controls. The control panel includes four 120V household outlets, a 12V automotive outlet, and a circuit breaker, offering flexibility for various connections. Furthermore, the generator is equipped with an easy-to-read fuel gauge and a low-fuel warning light, enhancing operational visibility.

Safety is also paramount in the design of this generator. It includes a powerful muffler that significantly reduces noise and meets stringent regulations for operation in residential areas. Additionally, the 004709-0 incorporates advanced technologies like the PowerDial which allows users to select the correct power level needed for various tasks easily.

Overall, the Generac Power Systems 004709-0 stands out due to its powerful output, user-friendly design, and safety features. Homeowners can rely on this generator to keep their homes powered during outages, ensuring comfort and security for themselves and their families. With its combination of innovation and practicality, the 004709-0 continues to exemplify Generac's commitment to quality and excellence in power solutions.
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