Kohler Command CH20 Service Manual page 58

Disassembly/Inspection and Service
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.
Disconnect Spark Plug Leads
NOTE: Pull on boot only, to prevent damage to spark
plug lead.
1. Disconnect leads from spark plugs.
2. Shut off fuel supply.
Drain Oil from Crankcase and Remove Oil Filter
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 and discard oil fi lter.
4. An oil cooler is standard equipment on some models
and an option on others. It may be a cast aluminum
housing, part of oil fi lter adapter, or attached to
blower housing, separated from oil fi lter adapter. If
equipped, remove adapter and cooler.
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
1. Unhook latches or loosen knob and remove cover.
2. Remove wing nut from element cover.
3. Remove element cover, air cleaner element with
precleaner and stud seal.
4. Remove screws securing bracket and base.
Additional rear screws must be removed if engine
contains a rear air cleaner support bracket.
5. Remove bracket then remove base and gasket while
carefully pulling rubber breather tube through base.
6. Remove rubber breather tube from breather cover.
58
Remove LPG/NG Components
Explosive Fuel can cause fi res and severe
burns.
If a gaseous odor is detected, ventilate area
and contact an authorized service technician.
LPG 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.
NG is extremely fl ammable, is lighter than air, and
rises. 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
LPG/NG fuel supply systems must be performed only
by qualifi ed LPG/NG system technicians. Improperly
installed and maintained LPG/NG equipment could
cause fuel supply system or other components to
malfunction, causing gas leaks.
Observe federal, state and local laws governing LPG/
NG fuel, storage, and systems.
1. Remove fuel lines and vacuum line from regulator.
Remove screws securing regulator and bracket.
2. For LPG engines, remove fuel lines from vaporizer
and lock-off /fi lter. Remove lock-off /fi lter from
vaporizer. Remove screws securing vaporizer and
bracket.
Remove Control Panel (if equipped)
1. Disconnect Oil Sentry
2. Disconnect choke control cable from control bracket.
3. Disconnect throttle control cable or shaft.
4. Remove panel from blower housing.
KohlerEngines.com
WARNING
indicator light wires.
™
24 690 30 Rev. G