Generac Power Systems 5255 User Manual

 24 

Periodically wash and wax the enclosure using auto-
motive type products. Frequent washing is recom-
mended in salt water/coastal areas. Spray engine 
linkages with a light oil such as WD-40.

If the generator cannot be exercised every seven days, 
and will be out of service longer than 90 days, pre-
pare the generator for storage as follows:

1.  Start the engine and let it warm up.
2.  Close the fuel shutoff valve in the fuel supply line 

and allow the unit to shut down.

3.  Once the unit has shut down, it will signal a low 

oil fault.

4.  Set the generator’s main circuit breaker to its 

OFF (or OPEN) position.

5.  Set the AUTO/OFF/MANUAL switch to OFF and 

turn off the utility power to the transfer switch. 
Remove the 15A fuse from the generator control 
panel. Disconnect the battery cables as outlined 
in “General Hazards”.

6.  While the engine is still warm from running, 

drain the oil completely. Refill the crankcase with 
oil. See ”Engine Oil Recommendations".

7.  Attach a tag to the engine indicating the viscosity 

and classification of the oil in the crankcase.

8.  Remove the spark plug(s) and spray fogging 

agent into the spark plug(s) threaded openings. 
Reinstall and tighten the spark plug(s).

9.  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.

10. Clean and wipe the entire generator.

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

1.  Verify that utility power is turned off and that the 

AUTO/OFF/MANUAL switch is set to OFF.

2.  Check the tag on the engine for oil viscosity and 

classification. Verify that the correct recommend-
ed oil is used in the engine (see the Engine Oil 
Recommendations section). If necessary, drain 
and refill with the proper oil.

3.  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. 
See “Specifications,” for type and size.

4.  Clean and wipe the entire generator.
5.  Make sure the 15A fuse is removed from the 

generator control panel. Reconnect the battery. 
Observe battery polarity. Damage may occur if the 
battery is connected incorrectly.

6.  Open the fuel shutoff valve.
7.  Insert the 15A fuse into the generator control 

panel. Start the unit by moving the AUTO/OFF/
MANUAL switch to MANUAL. Allow the unit to 
warm up thoroughly.

8.  Stop the unit by setting the AUTO/OFF/MANUAL 

switch to OFF.

9.  Turn on the utility power to the transfer switch.
10. Set the AUTO/OFF/MANUAL switch to AUTO.
11.  The generator is now ready for service.

NOTE:

If the battery was dead or disconnected, the exer-
cise timer must be reset.

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