Manuals / Generac / Lawn and Garden / Portable Generator

Generac 004189-1, 004188-1, 004475-1, 004371-2, 004474-1 Maintenance OWNER/OPERATOR can Perform

Models: 004371-2 004188-1 004474-1 004475-1 004370-2 004189-1

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Section 4 — Maintenance

Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators

•If oil level is below the dipstick ADD mark, remove oil fill cap. Add the recommended oil to bring oil level up to the FULL mark. DO NOT FILL ABOVE THE “FULL” MARK. See page 6 for recommended oils.

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”.

Figure 4.2 - Oil Dipstick and Oil Fill Cap

OIL DIPSTICK

BATTERY FLUID

Check battery electrolyte fluid at least once weekly. Fluid should cover separators in all battery cells. If fluid level is low, add distilled water to cover tops of sep- arators. DO NOT USE TAP WATER IN BATTERY.

ENGINE COOLANT

Check coolant level in coolant recovery bottle. See Specifications, page 8

•Add recommended coolant mixture as necessary.

•Periodically remove radiator pressure cap to make sure the coolant recovery system is functioning properly. Coolant should be at bottom of radiator filler neck. If coolant level is low, inspect gasket in radiator pressure cap. Replace cap, if necessary. To have pressure cap tested, contact an authorized Generac Service Dealer. Inspect cooling system and coolant recovery system for leaks.

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.

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.

PERFORM VISUAL INSPECTION

Complete a thorough visual inspection of the entire engine-generator monthly. Look for obvious damage, loose, missing or corroded nuts, bolts and other fasten- ers. Look for fuel, oil or coolant leaks.

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.

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 incor- rect frequency and/or voltage. Only qualified service technicians should adjust the governed speed.

Generac® Power Systems, Inc. 15

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Generac 004189-1, 004188-1, 004475-1, 004371-2, 004474-1, 004370-2 owner manual Maintenance OWNER/OPERATOR can Perform
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004371-2, 004188-1, 004474-1, 004475-1, 004370-2 specifications

Generac Power Systems is renowned for its commitment to providing reliable power solutions, and their various models, including the Generac 004189-1, 004370-2, 004475-1, 004474-1, and 004188-1, showcase the company’s innovative engineering and technology. Each of these models is designed to meet diverse energy needs, ensuring homeowners and businesses can maintain power during outages or in remote locations.

The Generac 004189-1 is an essential model in the lineup known for its robust construction and user-friendly interface. It features a powerful engine, ensuring reliable power output and efficient fuel consumption. Additionally, its lightweight design makes it portable, allowing easy relocation to different sites. The model integrates advanced technology for automatic voltage regulation, safeguarding sensitive electronics while operating.

Moving on to the Generac 004370-2, this model emphasizes advanced start-up technology. It is equipped with a reliable electric start feature, minimizing the effort required to power up the generator. Its noise-dampening design significantly reduces sound levels, making it ideal for residential use without causing disturbances to neighbors. The unit also includes a durable metal enclosure that helps protect the generator from the elements and increases its lifespan.

The Generac 004475-1 model stands out for its enhanced fuel efficiency and low emissions. This eco-friendly design adheres to strict emissions regulations, making it a suitable choice for environmentally conscious users. Its intuitive control panel provides easy monitoring of power output, fuel levels, and maintenance needs, ensuring users can efficiently manage their energy requirements.

Similarly, the Generac 004474-1 exemplifies convenience and performance with its dual fuel capability, allowing it to operate on both gasoline and propane. This flexibility ensures users can easily switch fuels based on availability and cost-effectiveness. The model also boasts an extended runtime, capable of powering essential appliances and systems for prolonged periods during outages.

Finally, the Generac 004188-1 emphasizes ease of use, featuring a comprehensive user manual and a straightforward assembly process. The model provides ample power capacity, making it excellent for both emergency back-up and recreational activities. Its compact design allows storage in confined spaces, while its efficient cooling system prevents overheating during extended use.

Overall, these Generac models reflect the company's dedication to innovation, quality, and user satisfaction. With features aimed at enhancing convenience, performance, and environmental responsibility, they cater to the varying power demands of modern users.