13
Fuel Filter
The filter of the LP fuel system is an integral part within
the lock-off/filter assembly. All service relating to the
lock-off/filter is to be performed by an authorized Kohler
Engine Service Dealer or qualified LP personnel only.
Servicing of filter is recommended every 500 hours. The
gasoline system (dual-fuel only) has an in-line fuel filter.
Periodically inspect the filter and replace
every 200
operating hours
. Use a genuine Kohler filter, Part No.
24 050 02-S.
Carburetor Troubleshooting and
Adjustments
In compliance with government emission standards,
the carburetor and the regulator are calibrated and
preset to deliver the correct fuel-to-air mixture to the
engine under all operating conditions and cannot be
adjusted, except for low idle speed. Carburetor
servicing is to be performed by an authorized Kohler
Engine Service Dealer only. See Figure 11.
LPG Regulator
In compliance with government emission standards,
the regulator is preset at the factory to provide the
proper supply of fuel. No adjustment or resetting of
regulator is to be made. All service relating to the
regulator must be performed by an authorized Kohler
Engine Service Dealer or qualified LP personnel only.
Over time, fuel deposits can accumulate inside the
regulator. Draining of these deposits is recommended
(Nikki regulators only) every 500 operating hours, or
annually, whichever comes first.
Nikki Regulators
Every 500 hours/annually drain regulator:
1. Turn fuel supply valve off, run engine out of fuel,
and turn off ignition switch.
2. Disconnect and ground the spark plug leads.
3. Remove the 1/8" pipe plug from the bottom of
regulator and drain any accumulated deposits.
See Figure 12.
Figure 12. Nikki Regulator Drain Plug.
Regulator Drain Plug
Figure 13. Schematic Showing Components of LP System.
LP Carburetor
Fuel Delivery Line
Vacuum Line
Dry Gas Regulator
Vaporizer
High Pressure
Line
Lock-Off/Filter
(12 Volt DC)
Propane Supply Tank
(Liquid Withdrawal)
Low Idle
Speed
Adjusting
Screw
Figure 11.
