Section 4 — Maintenance

Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators

NOTE:

If the fault is not repaired, the overcrank feature will continue to activate.

1.Start the generator by moving the Auto/ Off/Manual switch to the MANUAL position. Allow it to run for a short while and then shut it down by moving the switch to the OFF position.

3.7.3.1 Approximate Crank Cycle Times

15 seconds ON

7 seconds OFF

7 seconds ON

7 seconds OFF

Repeat for 45 seconds Approximately 90 seconds total

‹3.7.4 OVERSPEED

This feature protects the generator from damage by shutting it down if it happens to run faster than the preset limit. This protection also prevents the gener- ator from supplying an output that could potentially damage appliances connected to the generator circuit. Contact the nearest Generac/Guardian Authorized Dealer if this failure occurs.

2.Remove the dipstick and wipe it dry with a clean cloth.

3.Install the dipstick; then, remove it again. The oil level should be at the dipstick “Full” mark. If nec- essary, add oil to the “Full” mark only. DO NOT FILL ABOVE THE “FULL” MARK.

Never operate the engine with the oil level

!below the “Add” mark on the dipstick. Doing this could damage the engine.

4.Install the dipstick.

5.Reset the Auto/Off/Manual switch to its original position.

Figure 4.2 — Oil Dipstick and Fill, 7 kW

4.1 FUSE

Oil Dipstick and Fill

The generator panel’s 15 amp fuse (Figure 4.1) pro-

 

tects the DC control circuit against overload. The fuse

 

is wired in series with the battery output lead to the

 

panel. If the fuse element has melted open, the engine

 

cannot crank or start. Replace the fuse using only an

 

identical 15-amp replacement.

 

The generator panel’s 5 amp fuse protects the battery charge circuit against overload. If the fuse element has melted open, there will not be battery charging capabilities. Replace the fuse using only an identical 5 amp replacement. To remove fuse, push cap down and rotate counterclockwise.

Figure 4.1 – Generator Control Panel

FUSE

Figure 4.3 — Oil Dipstick and Fill,

12 kW and 15 kW

L o c a t e y o u r n e a r e s t

d e a le r a t :

5A

OFF MAN.

AUTO

FUSE

 

15A

SET

 

EXERCISE

 

TIME

POWER SYSTEMS, INC.

SYSTEM SET

LOW OIL

HIGH TEMP.

OVER SPEED

OVER CRANK

F L A S H IN G G R E E N L E D =

N O U T IL IT Y S E N S E 4 F L A S H IN G R E D L E D S =

E X E R C IS E R N O T S E T

Oil Dipstick

Oil Fill

4.2 CHECKING THE ENGINE OIL LEVEL

For oil capacities, see “Specifications,” Section 1.5. For engine oil recommendations, see Section 4.3.1. To check the engine oil level, proceed as follows (Figures 4.2 and 4.3):

Generac® Power Systems, Inc. 17

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Generac Power Systems 04389-1, 04456-1, 04390-1 owner manual Checking the Engine OIL Level, Approximate Crank Cycle Times