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20 Generac
®
Power Systems, Inc.
The maximum ambient temperature for your
generator is 48.9° C (104° F).
4.10 ATTENTION AFTER SUBMERSION
If the generator has been submerged in water,
it MUST NOT be started and operated. Following any
submersion in water, have a Generac Authorized
Dealer thoroughly clean and dry the generator.
4.11 OUT OF SERVICE PROCEDURE
4.11.1 REMOVAL FROM SERVICE
If you cannot exercise the generator every seven days,
and it is to 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 Auto/Off/Manual switch to OFF and turn
off the utility power to the transfer switch.
5. While the engine is still warm from running,
drain the oil completely. Refill the crankcase with
oil. See ”Engine Oil Recommendations,” Section
4.3.1 (Page 17).
6. Attach a tag to the engine indicating the viscosity
and classification of the oil in the crankcase.
7. Remove the spark plug(s) and spray fogging agent
into the spark plug(s) threaded openings.
Reinstall and tighten the spark plug(s).
8. 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.
9. Clean and wipe the entire generator.
4.11.2 RETURN TO SERVICE
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 Section 4.3.1,
Page 17). 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,” Section 1.5 (Page 6), for type
and size.
4. Clean and wipe the entire generator.
5. Reconnect the battery. Observe battery polarity.
Damage may occur if the battery is connected
incorrectly.
6. Open the fuel shutoff valve.
7. Start the unit by moving the Auto/Off/Manual
switch to MANUAL. Allow the unit to warm up
thoroughly.
8. Stop the unit and set the Auto/Off/Manual switch
to AUTO.
9. Turn on the utility power to the transfer switch.
10. Your generator is now ready for service.
NOTE:
If the battery was dead or disconnected, you must
reset the exercise timer.
4.12 CORROSION PROTECTION
Periodically wash and wax the enclosure using auto-
motive type products. Frequent washing is recom-
mended in a salt water, coastal area. Spray engine
linkages with a light oil such as WD-40.
!
Section 4 — Maintenance
Air-cooled 8.5 kW Generator