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Generac Power Systems 004373-6, 004626-5 owner manual Changing the Engine OIL and Filter

Models: 004373-6 004626-5

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Section 4 — Maintenance

Guardian Liquid-cooled 40 kW Generator

4.2CHANGING THE ENGINE OIL AND FILTER

‹4.2.1 ENGINE OIL RECOMMENDATIONS

Use oil of API Service Class SG, SH or SJ. The recommended oil grade for the engine is SAE 15W-40.

NOTE:

5.Apply a light coating of clean engine oil to the seal of new oil filter. Install the filter and tighten by hand only. DO NOT OVERTIGHTEN.

6.Remove the oil fill cap (Figure 4.1). Add the recom- mended oil (see Section 4.2.1). DO NOT FILL ABOVE THE DIPSTICK “FULL” MARK. Crankcase oil capacity is 4.5 U.S. quarts (4.25 L).

The unit is supplied with “break-in” oil. See the “Service Schedule,” Section 4.12, for the first required oil change.

Any attempt to crank or start the engine before

!it has been properly serviced with the recom- mended oil may result in an engine failure.

After refilling the crankcase with oil, always

!check the oil level on the dipstick. Never operate the engine with the oil level below the “Add” mark on the dipstick. Doing this could damage the engine.

7.Start the engine and check for oil leaks.

8.Check the oil level after checking for leaks to ensure that the oil is filled to the proper level.

‹4.2.2 OIL AND FILTER CHANGE PROCEDURE

To change the oil and filter, proceed as follows:

Refer to the “Service Schedule,” (Section 4.12) 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 it immediately as follows:

1.Remove the oil drain hose from its retaining clip, located on the generator base frame.

2.Loosen and remove the oil drain hose cap, located on the base frame end of the hose. Drain the oil completely into a suitable container.

3.When all of the oil has drained, install and tighten the oil drain hose cap.

4.Turn the oil filter (Generac part number 0A37970001, Figure 4.2) counterclockwise and remove it. Properly dispose of the old filter.

Figure 4.2 – Oil Filter

4.3CHANGING THE ENGINE AIR

CLEANER

To replace the engine air cleaner, (Generac part num- ber 0A4637), remove the air cleaner cover and replace the air filter making sure it is positioned properly before reattaching the cover. (See Figure 4.3).

Figure 4.3 – Engine Air Cleaner

Air Cleaner

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See the “Service Schedule,” Section 4.12, for recom- mended air cleaner maintenance.

Generac® Power Systems, Inc. 15

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Generac Power Systems 004373-6, 004626-5 owner manual Changing the Engine OIL and Filter, Changing the Engine AIR Cleaner
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004373-6, 004626-5 specifications

Generac Power Systems has established itself as a leader in the field of backup and portable power solutions, and their models 004626-5 and 004373-6 are prime examples of their dedication to innovation and reliability. These models are designed to cater to a variety of power needs, making them essential assets for homeowners and businesses alike.

The 004626-5 is a robust home standby generator, renowned for its powerful performance and automatic transfer switch capabilities. This model features Generac's G-Force engine, which is specifically engineered for high performance and longevity, ensuring that it can handle the demands of powering a home during outages. It boasts a multi-language LCD display that provides real-time system status updates, allowing users to monitor performance with ease. Additionally, the 004626-5 is equipped with an integrated wi-fi system, enabling remote monitoring through the Mobile Link app. This feature gives users the convenience of checking their generator's status from anywhere, ensuring peace of mind.

On the other hand, the 004373-6 is a portable generator designed for versatility and convenience. This model is lightweight and easily transportable, making it ideal for outdoor activities, job sites, or emergency power supply during outages. Powered by a reliable OHV engine, the 004373-6 delivers impressive power output while maintaining fuel efficiency. Its ergonomic design includes a transport handle and never-flat wheels, allowing for easy maneuverability. The model also features Generac’s PowerRush technology, which provides over 50% more starting capacity, making it capable of handling larger appliances with ease.

Both models are designed with safety features in mind. The 004626-5 comes with a durable weather-resistant enclosure, protecting it from the elements, while the 004373-6 includes a low-oil shutdown feature to prevent engine damage.

In summary, Generac Power Systems continues to set the benchmark for reliability and innovation in power solutions with models 004626-5 and 004373-6. With their advanced technologies, user-friendly features, and unparalleled performance, these generators are engineered to provide power when it’s needed most, ensuring a seamless transition during outages and enhancing convenience for users across various settings.