Kohler Command PRO ECV630 Owner's Manual - Page 11
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1. Before removing the 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. Replace
the plug if worn or reuse is questionable.
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 to 0.76 mm (0.030 in.) by carefully
bending the ground electrode. See Figure 12.
Wire Gauge
Spark Plug
Ground
Electrode
Figure 12. Servicing Spark Plug.
4. Reinstall the spark plug into the cylinder
head. Torque the spark plug to 24.4-29.8 N·m
(18-22 ft. lb.).
Battery Charging
Follow all the battery warnings and safety guidelines
and procedures provided by the battery manufacturer
and equipment manufacturer.
Jump Starting
Follow all safety guidelines and procedures provided
by the battery manufacturer and/or original
equipment manufacturer (OEM). Failure to follow
proper procedures may result in serious personal
injury and/or non-warrantable damage to the engine's
Electronic Fuel Injection (EFI) components.
Fuel System
General
The precision components inside the fuel pump
module are not serviceable. DO NOT attempt to open
the fuel pump module. Damage to the components
will result and the warranty will be void. Because
the fuel pump module is not serviceable, the engines
are equipped with a special 10-micron EFI fuel filter
to prevent harmful contamination from entering the
module. See Figure 1.
If there are two filters in the system, the one before
the lift pump will be a standard 51-75 micron filter,
and the one after the lift pump will be the special
10-micron filter. Be sure to use an approved 10-micron
filter for replacement.
Service
Periodically inspect the filter and replace every 200
operating hours or more frequently under extremely
dusty or dirty conditions. Use only a genuine Kohler
filter (Kohler Part No. 25 050 42-S) and install it
according to the directional arrows. Failure to use the
proper filter can result in engine damage and void the
warranty.
0.76 mm
(0.030 in.) Gap
Fuel Line
These engines use low permeation rated fuel lines,
certified to comply with California and U.S. EPA
evaporative emission requirements. Fuel lines that do
not meet these requirements may not be used. Order
replacement hose through a Kohler Service Center.
A high pressure fuel line runs between the high
pressure pump and the injectors. This special fuel line,
capable of withstanding the high pressure of the EFI
fuel system and meets SAE R9 specifications. If fuel
line must be replaced, see your Kohler Engine Service
Center.
WARNING
High Pressure Fluids can puncture
skin and cause severe injury or death.
Do not work on fuel system without
proper training and safety equipment.
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