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Manual Generac QT08054KNANA Generator

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Manual

ENGINE COOLANT 

Check coolant level in coolant recovery bottle. See the

“Specifications” section.

• 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

Service Dealer. Inspect cooling system and coolant recovery

system for leaks.

MAINTENANCE OWNER/

OPERATOR CAN PERFORM



Before working on the generator, ensure the fol-

lowing:

• The AUTO/OFF/MANUAL switch is in the OFF position.

• The 15A fuse has been removed from the control box.

• The 120VAC supply to the battery charger is switched OFF.

• The negative battery cable has been removed.

CHECK ENGINE OIL LEVEL 

Refer to the “Checking Fluid Levels” section.

CHECK BATTERY 

• Check battery fluid level each week as outlined under “Check

Fluid Levels”.

• Check battery cables for condition, tightness, corrosion or dam-

age. Clean, tighten or replace as necessary.

EXERCISE SYSTEM 

Start the Stationary Emergency Generator engine at least once

every seven days and let it run at least 20 minutes. For more

detailed exercise information, see the respective sections in the

Control Panel Technical Manual that is supplied with the unit.

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 the “Checking Fluid Levels” section.

PERFORM VISUAL INSPECTION 

Complete a thorough visual inspection of the entire engine-genera-

tor monthly. Look for obvious damage, loose, missing or corroded

nuts, bolts and other fasteners. 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 condi-

tion, 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 5/8 inch. Adjust

belt tension as required.

• Check fan belt alignment.

INSPECT ENGINE GOVERNOR 

Visually inspect electronic governor.

DANGER



Do not attempt to adjust the governor. 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

incorrect frequency and/or voltage. Only quali-

fied service technicians should adjust the gov-

erned speed.

CHANGING ENGINE OIL 



Hot oil may cause burns. Allow engine to cool

before draining oil. Avoid prolonged or repeated

skin exposure with used oil. Thoroughly wash

exposed areas with soap.

Refer to maintenance performed by authorized service facilities for

engine oil and filter change frequencies.

Drain the oil while the engine is still warm from running. This

means warm up the engine, shut it down and drain immediately

as follows:

1. Remove OIL DRAIN HOSE from its retaining clip.

2. Loosen and remove OIL DRAIN HOSE CAP. Drain oil com-

pletely into suitable container.

3. When all oil has drained, install and tighten OIL DRAIN HOSE

CAP, and re-install into its retaining clip.

4. Turn OIL FILTER (Figure 10.2) counterclockwise and remove.

Dispose of old filter.

5. Apply light coating of new engine oil to seal of new oil

filter.-Install FILTER and tighten by hand only. DO NOT

OVERTIGHTEN.

Stationary Emergency Generator

Maintenance

10-2

Maint013 Rev. D 04/09

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