23
Fuel System
18 690 06 Rev. --
KohlerEngines.com
Carburetor Servicing
WARNING
Accidental Starts can cause severe injury or
death.
Disconnect and ground spark plug lead(s)
before servicing.
Before working on engine or equipment, disable
engine as follows: 1) Disconnect spark plug lead(s). 2)
Disconnect negative (–) battery cable from battery.
NOTE: Main and slow jets are
fi
xed and size speci
fi
c
and can be removed if required. Fixed jets for
high altitudes are available.
• Inspect carburetor body for cracks, holes, and other
wear or damage.
• Inspect
fl
oat for cracks, holes, and missing or
damaged
fl
oat tabs. Check
fl
oat hinge and shaft for
wear or damage.
• Inspect fuel inlet needle and seat for wear or damage.
1. Perform removal procedures for appropriate air
cleaner and carburetor outlined in Disassembly.
2. Clean exterior surfaces of dirt or foreign material
before disassembling carburetor. Remove bowl
retaining screws, and carefully separate fuel bowl
from carburetor. Do not damage fuel bowl O-rings.
Transfer any remaining fuel into an approved
container. Save all parts. Fuel can also be drained
prior to bowl removal by loosening/removing bowl
drain screw.
3. Remove
fl
oat pin and inlet needle. Seat for inlet
needle is not serviceable and should not be
removed.
4. Clean carburetor bowl and inlet seat areas as
required.
5. Carefully remove main jet from carburetor. After
main jet is removed, main nozzles can be removed
through bottom of main towers. Note orientation/
direction of nozzles. End with 2 raised shoulders
should be out/down adjacent to main jets.
6. Save parts for cleaning and reuse unless a jet kit is
also being installed. Clean slow jets using
compressed air or carburetor cleaner, do not use
wire.
NOTE: There are 2 O-rings on body of idle jet.
Carburetor is now disassembled for appropriate cleaning
and installation of parts in overhaul kit. See instructions
provided with repair kits for more detailed information.
High Altitude Operation
Engines may require a high altitude carburetor kit to
ensure correct engine operation at altitudes above
1219 meters (4000 ft.). To obtain high altitude kit
information or to
fi
nd a Kohler authorized dealer visit
KohlerEngines.com or call 1-800-544-2444 (U.S. and
Canada).
This engine should be operated in its original
con
fi
guration below 1219 meters (4000 ft.) as damage
may occur if high altitude carburetor kit is installed and
operated below 1219 meters (4000 ft.).
