Clean all parts thoroughly as engine is disassembled.
Only clean parts can be accurately inspected
and gauged for wear or damage. There are many
commercially available cleaners that will quickly remove
grease, oil, and grime from engine parts. When such a
cleaner is used, follow manufacturer’s instructions and
safety precautions carefully.
Make sure all traces of cleaner are removed before
engine is reassembled and placed into operation. Even
small amounts of these cleaners can quickly break down
lubricating properties of engine oil.
Shut off Fuel Supply/Empty System
WARNING
Explosive Fuel can cause fi res and severe
burns.
If a gaseous odor is detected, ventilate area
and contact an authorized service technician.
Propane is extremely fl ammable and is heavier than air
and tends to settle in low areas where a spark or fl ame
could ignite gas. Do not start or operate this engine
in a poorly ventilated area where leaking gas could
accumulate and endanger safety of persons in area.
To ensure personal safety, installation and repair of
propane fuel supply systems must be performed only
by qualifi ed propane system technicians. Improperly
installed and maintained propane equipment could
cause fuel supply system or other components to
malfunction, causing gas leaks.
Observe federal, state and local laws governing
propane fuel, storage, and systems.
1. Relieve fuel pressure at lock-off. Shut off tank valve.
If possible, run engine in a well-ventilated area until
fuel system is empty and engine stops. If unable to
run engine, work in a well-ventilated area and
carefully loosen inlet fuel fi tting on vaporizer/
regulator, slowly venting off fuel from line. When fuel
is dispensed, retighten fi tting and remove quick
connect fi tting to allow fuel to escape from line.
Disconnect Spark Plug Leads
NOTE: Pull on boot only, to prevent damage to spark
plug lead.
Disconnect leads from spark plugs.
Drain Oil from Crankcase and Remove Oil Filter
NOTE: Some models are equipped with an oil drain
valve.
1. Remove oil fi ll cap/dipstick, and 1 oil drain plug.
2. Allow ample time for oil to drain from crankcase and
oil fi lter.
3. Remove mounting screw and oil fi ll tube.
4. Remove and discard oil fi lter.
Remove Oil Cooler
1. Use an 8 mm Allen wrench to remove oil fi lter
threaded nipple.
2. Separate fi lter adapter from closure plate, leaving oil
lines attached. Remove screws mounting oil cooler
to blower housing, then remove cooler, lines, and
fi lter adapter with O-ring, as an assembly.
Remove Muffl er
Remove exhaust system and attaching hardware from
engine. On engines equipped with a port liner, remove it
now.
Remove Air Cleaner Assembly
Heavy Duty Air Cleaner
1. Remove nuts securing air cleaner to mounting studs.
2. Remove screws securing air cleaner assembly to
mounting bracket and remove air cleaner assembly.
Low-Profi le Air Cleaner (Optional)
1. Loosen retaining knob and remove cover.
2. Remove wing nut from element cover.
3. Remove element cover, element and precleaner.
4. Remove nuts securing base. Additional screws must
be removed from lower air cleaner support bracket.
5. Remove base.
Remove Control Panel Assembly (If Equipped)
1. Disconnect cables from throttle levers.
2. Remove screws fastening control panel and remove
panel from blower housing.
Remove External Governor Controls
NOTE: To aid in reassembly, mark hole locations of
governor spring, throttle linkage spring, throttle
linkage, before removing them from governor
lever.
1. Disconnect governor spring attached to governor
lever. Note/mark hole location for reassembly.
2. Note/mark hole location, then disconnect throttle
linkage spring from governor lever. Remove throttle
linkage bushing and throttle linkage from governor
lever. Note/mark hole location for reassembly.
3. Loosen nut and remove governor lever from cross
shaft.
Disassembly/Inspection and Service
5924 690 32 Rev. A KohlerEngines.com
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