Liquid Cooled Vertical Crankshaft Service Manual

8.1
Section 8
Electrical System and Components
8
Section 8
Electrical System and Components
This section covers the operation, service and repair of
the electrical system components. Systems and
components covered in this section are:
• Spark Plugs
• Battery and Charging System
• Electronic CD Ignition System
• Electric Starter
Spark Plugs
Engine misfire or starting problems are often caused
by a spark plug that has improper gap or is in poor
condition.
The engine is equipped with the following spark plugs:
Type: The standard spark plug is a Champion
®
RC14YC (Kohler Part No. 66 132 01-S).
Equivalent alternate brand plugs can also
be used.
Gap: 0.76 mm (0.030 in.)
Thread Size: 14 mm
Reach: 19.1 mm (3/4 in.)
Hex. Size: 16 mm (5/8 in.)
Spark Plug Service
Annually or every 200 hours of operation (whichever
comes first), remove the spark plugs, check condition,
and reset the gap or replace with new spark plugs as
necessary. Every 500 hours of operation, replace the
spark plugs. To service the spark plugs perform the
following steps:
1. Before removing each spark plug, clean the area
around the base of the plug to keep dirt and
debris out of the engine.
2. Remove the plug and check its condition. See
“Inspection” following this procedure. Replace the
plug if necessary.
NOTE: Do not clean 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 to 0.76 mm (0.030 in.) by carefully
bending the ground electrode. See Figure 8-1.
Figure 8-1. Servicing Spark Plug.
4. Reinstall the spark plug into the cylinder head and
tighten to 24.4-29.8 N·m (18-22 ft. lb.).
LV560, LV625, LV675
Wire Gauge
Ground
Electrode
Spark Plug
0.76 mm
(0.030 in.) Gap
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