8.1
Section 8
Electrical System and Components
8
Section 8
Electrical System and Components
CV11-16
CV460-465, CV490-495
This section covers the operation, service, and repair of the electrical system and electrical system components.
Major electrical systems and components covered in this section include the ignition system, battery, battery
charging systems, and electric starters.
WARNING: Electrical Shock
Never touch electrical wires or components while the engine is running. They can be sources of electrical shock.
Spark Plug
Engine misfire or starting problems are often caused by
a spark plug that is in poor condition or has an improper
gap setting.
These engines are equipped with one of the following
spark plugs:
Type: The standard spark plug is a Champion
®
RC12YC (Kohler Part No. 12 132 02-S). A
high-performance spark plug, Champion
®
Premium Gold 2071 (used on Pro Series
engines, Kohler Part No. 12 132 06-S) is also
available. Equivalent alternate brand plugs can
also be used.
Gap: CV11-15,CV460-465,490-495 1.02 mm (0.040 in.)
CV11-14 LP,CV16 0.76 mm (0.030 in.)
Thread Size: 14 mm
Reach: 19.1 mm (3/4 in.)
Hex. Size: 15.9 mm (5/8 in.)
Spark Plug Service
Every 200 hours of operation, remove the spark plug,
check its condition, and reset the gap or replace with a
new plug as necessary.
1. Before removing the spark plug, clean the area
around the base of the plug to keep dirt and debris
out of the engine. Due to the deep recess around
the spark plug, blowing out the cavity with
compressed air is usually the most effective
method for cleaning.
2. Remove the plug and check its condition. Replace
the plug if worn or reuse is questionable. (See
figures on page 8.2.)
NOTE: Do not clean the spark plug in a machine
using abrasive grit. Some grit could
remain in the spark plug and enter the
engine, causing extensive wear and
damage.
3. Check the gap using a wire feeler gauge. Adjust
the gap by carefully bending the ground electrode.
See Figure 8-1.
Figure 8-1. Servicing Spark Plug.
Wire Gauge
Ground Electrode
Spark Plug
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