LPG Regulator
In compliance with government emission
standards, regulator is preset at factory to
provide proper supply of fuel. No adjustment or
resetting of regulator is to be made. All service
relating to regulator must be performed by
a Kohler authorized dealer or qualifi ed LPG
personnel only.
Over time, fuel deposits can accumulate
inside regulator. Removing these deposits is
recommended (Nikki regulators only). Follow
steps below to drain Nikki Regulators.
1. Turn fuel supply valve off , run engine out of
fuel, and turn off ignition switch.
2. Disconnect and ground spark plug leads.
3. Remove 1/8" pipe plug from bottom of
regulator. Remove any accumulated
deposits.
4. Reinstall plug using Tefl on
Tefl on
tape) on threads and tighten securely.
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If required, a replacement plug can be found
at KohlerEngines.com.
Lock-Off /Filter Assembly
Lock-Off /Filter Assembly opens, closes, and
fi lters liquid fuel fl ow from supply tank before
reaching vaporizer.
Vaporizer
Vaporizer changes Liquefi ed Petroleum (LPG)
from supply tank to a gaseous/vapor state.
Spark Plugs
Electrical Shock can cause injury.
Do not touch wires while engine
is running.
Clean out spark plug recess. Remove plug and
replace.
1. Check gap using wire feeler gauge. Adjust
gap, see specifi cation table for adjustment.
2. Install plug into cylinder head.
3. Torque plug to 20 ft. lb. (27 N·m).
8
pipe sealant (not
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CAUTION
KohlerEngines.com
Air Cleaner
NOTE: Operating engine with loose or
damaged air cleaner components
could cause premature wear and
failure. Replace all bent or damaged
components.
NOTE: Paper element cannot be blown out
with compressed air.
Loosen knob and remove air cleaner cover.
Precleaner:
1. Remove precleaner from paper element.
2. Replace or wash precleaner in warm water
with detergent. Rinse and allow to air dry.
3. Saturate precleaner with new engine oil;
squeeze out excess oil.
4. Reinstall precleaner over paper element.
Paper Element:
1. Clean area around element. Remove wing
nut, element cover, and paper element with
precleaner.
2. Separate precleaner from element; service
precleaner and replace paper element.
3. Check condition of rubber seal and replace if
necessary.
4. Install new paper element on base; install
precleaner over paper element; reinstall
element cover and secure with wing nut.
Reinstall air cleaner cover and secure with
knob.
Breather Tube (if equipped)
Ensure end of breather tube is properly
connected.
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