Generac Power Systems 04758-2, 04759-2, 04760-2 Battery Maintenance, Spark Plugs, Danger

Section 4 — Maintenance

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

Figure 4.6 — 7 kW, Engine Air Cleaner Location Figure 4.8 – Setting the Spark Plug Gap

Air Cleaner	Fuel
	Regulator

SET PLUG GAP AT 0.76 mm/0.50 mm

(0.030 inch/0.020 inch)

Figure 4.7 — 12 kW and 15 kW Engine

Air Cleaner

Screw

Cover

Filter

4.7BATTERY MAINTENANCE

The battery should be inspected per the “Service Schedule,” Section 4.13. The following procedure should be followed for inspection:

1.Inspect the battery posts and cables for tightness and corrosion. Tighten and clean as necessary.

2.Check the battery fluid level of unsealed batteries and, if necessary, fill with DISTILLED WATER ONLY. DO NOT USE TAP WATER IN BATTERIES.

3.Have the state of charge and condition checked. This should be done with an automotive-type bat- tery hydrometer.

DANGER

4.6SPARK PLUG(S)

Reset the spark plug(s) gap or replace the spark plug(s) as necessary. See Section 4.13 for mainte- nance requirements.

1.Clean the area around the base of the spark plug(s) to keep dirt and debris out of the engine. Clean by scraping or washing using a wire brush and commercial solvent. Do not blast the spark plug(s) to clean.

2.Remove the spark plug(s) and check the condi- tion. Replace the spark plug(s) if worn or if reuse is questionable. See Section 4.13 for recom- mended inspection.

3.Check the spark plug gap using a wire feeler gauge. Adjust the gap to 0.76 mm (0.030 inch) for 7 kW and 0.50 mm (0.020 inch) for 12/15 kW by carefully bending the ground electrode (Figure 4.8).

Do not dispose of the battery in a fire. The battery is capable of exploding.

A battery presents a risk of electrical shock and high short circuit current. The following precautions are to be observed when working on batteries:

•Remove watches, rings or other metal objects;

•Use tools with insulated handles;

•Wear rubber gloves and boots;

•Do not lay tools or metal parts on top of the battery; and

•Disconnect charging source prior to connecting or dis- connecting battery terminals.

Do not open or mutilate the battery. Released

!electrolyte has been known to be harmful to the skin and eyes, and to be toxic.

The electrolyte is a dilute sulfuric acid that is

!harmful to the skin and eyes. It is electrically conductive and corrosive. The following procedures are to be observed:

•Wear full eye protection and protective clothing;

•Where electrolyte contacts the skin, wash it off immediately with water;

Generac® Power Systems, Inc. 19