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3. Wipe away dust or debris from inside of the air

box and around edges.

4. Install the new air cleaner into the air box.

5. Install the cover. Turn the two cover screws clock-

wise to tighten.

See the “Service Schedule,” Section 4.13 for air

cleaner maintenance. See Section 1.5.1 for air filter

replacement part number.

Figure 4.6 — 7 kW, Engine Air Cleaner Location

Air Cleaner

Fuel

Regulator

3/4" Hole

Figure 4.7 — 12 kW and 15 kW Engine

Air Cleaner

Cover

Filter

Screw

4.6 SPARK 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 recommend-

ed 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).

Figure 4.8 – Setting the Spark Plug Gap

4.7 BATTERY 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 BATTER-

IES.

3. Have the state of charge and condition checked.

This should be done with an automotive-type bat-

tery hydrometer.

DANGER



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 pre-

cautions 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

disconnecting battery terminals.

Section 4 — Maintenance

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

SET PLUG GAP AT 0.76 mm (0.030 inch) 7kW

(0.508 mm (0.020 inch) 12/15kW

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