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Figure 11. 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
WARNING: Explosive Gas!
Batteries produce explosive hydrogen gas while being
charged. To prevent a fire or explosion, charge batteries
only in well ventilated areas. Keep sparks, open flames,
and other sources of ignition away from the battery at
all times. Keep batteries out of the reach of children.
Remove all jewelry when servicing batteries.
Before disconnecting the negative (–) ground cable,
make sure all switches are OFF. If ON, a spark will
occur at the ground cable terminal which could cause
an explosion if hydrogen gas or gasoline vapors are
present.
NOTE: Do not apply 12 volt DC to kill terminal of
ignition module.
Ground
Electrode
Spark Plug
Wire Gauge
Fuel System
WARNING: Fuel System Under Pressure!
The CH26 fuel system operates under high pressure,
and the fuel filter and fuel line used must be approved
system components only. Use of substitute parts can
result in system failure, gasoline leakage and possible
explosion.
Fuel Filter
CH18-25 Engines: Some engines are equipped with
an in-line fuel filter. Periodically inspect the filter and
replace when dirty.
Always use genuine Kohler parts.
CH26 Engines: A special, high volume, high pressure
filter with greater filtration capabilities and internal
surface area is used. See Figure 12.
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 11.
Figure 12. CH26 Fuel Filter and Line.
Replacement is recommended every 1500 hours, or
more frequently under extremely dusty or dirty
conditions.
When replacement is necessary, always
use genuine Kohler parts.
Fuel Line
CH26 Engines: A special fuel line capable of
withstanding the high pressure of the EFI fuel system is
used (must meet SAE R9 specifications). See Figure
12. If fuel line must be replaced, see your Kohler Engine
Service Dealer.
Fuel Filter
Fuel Line
0.76 mm
(0.030 in.) Gap