Spark Plug(S); Battery Maintenance - Generac Guardian Serie Manuel Du Propriétaire

4.4.3 8KW GENERATOR
See "The Generator" section to locate the air box. Use the following
procedures to replace the dirty air filter within the air box (Figure
4.7).
1. Lift the roof and remove the door.
2. Push back on the latch of the yellow air filter access door to
swing open.
3. Pull out the old air filter and discard appropriately.
4. Install the new filter, open end first into the air box.
5. Swing the yellow door shut and snap to close.
6. Replace door and close roof securely.
Figure 4.7 — 8kW Engine Air Cleaner Location
4.5

SPARK PLUG(S)

Reset the spark plug(s) gap or replace the spark plug(s) as neces-
sary. See the Service Schedule section for maintenance require-
ments.
1. Clean the area around the base of the spark plug(s) to keep
dirt and debris out of the engine.
2. Remove the spark plug(s) and check the condition. Replace
the spark plug(s) if worn or if reuse is questionable. See the
Service Schedule section for recommended inspection. Clean
by scraping or washing using a wire brush and commercial
solvent. Do not blast the spark plug(s) to clean.
3. Check the spark plug gap using a wire feeler gauge. Adjust
the gap to 0.76 mm (0.030 inch) for 8, 10 and 20kW; and
1.02 mm (0.040 inch) for 12, 14, 16 and 17kW by carefully
bending the ground electrode (Figure 4.8).
Air Cleaner
Cover
Section 4 — Maintenance
Air-cooled Generators
Figure 4.8 – Setting the Spark Plug Gap
SET PLUG GAP AT 0.76 mm (.030 inch) - 8, 10 &
20kW; 1.02 mm (.040 inch) - 12, 14, 16 & 17kW
4.6

BATTERY MAINTENANCE

The battery should be inspected per the "Service Schedule" sec-
tion. The following procedure should be followed for inspection:
1. Inspect the battery posts and cables for tightness and corro-
sion. Tighten and clean as necessary.
2. Check the battery fluid level of unsealed batteries and, if nec-
essary, 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 battery 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 the 7.5A fuse from the generator control
panel.
• 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.

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;
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