Kohler CH18-CH26 Service Manual page 72

Section 5A
LPG Fuel Systems
Preventative Maintenance
The regulator is preset at the factory and generally
requires no further adjustment. No periodic service is
required. Over time, depending on fuel quality,
operating environment, and system performance, fuel
deposits can accumulate inside the regulator. Those
regulators containing a drain plug (Nikki) should be
drained every 500 hours to remove any accumulated
deposits. See Figure 5A-23.
Regulator Drain Plug
Figure 5A-23. Regulator Drain Plug (Some Models).
1. Turn 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 bottom of
regulator and drain any accumulated deposits.
See Figure 5A-23.
4. Reinstall plug using pipe sealant with Teflon
(Loctite ® 592 or equivalent) on threads and
tighten securely. If required, a replacement plug
is available as Kohler Part No. X-75-23-S.
5A.12
Regulator Service
Every 1500 hours it is recommended that
disassembly, cleaning, and resetting of the regulator
be performed using the regulator rebuilding kit
available. Specific instructions are included in the
rebuilding kit. Perform the regulator service
following the instructions provided. As all
adjustments and settings must be reset using specific
test equipment, this must be performed by qualified
LP personnel only.
Impco (Beam) Regulator Service
Kohler repair kit 24 757 40-S should be used to service
the regulator every 1500 hours, or whenever cleaning
and servicing is required.
Nikki Regulator Service
Kohler repair kit 24 757 39-S should be used every
1500 hours.
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