21
Fuel System
14 690 01 Rev. G KohlerEngines.com
● Inspect carburetor body for cracks, holes, and other
wear or damage.
● Inspect oat for cracks, holes, and missing or
damaged oat tabs. Check 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 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 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
conguration below 1219 meters (4000 ft.) as damage
may occur if high altitude carburetor kit is installed and
operated below 1219 meters (4000 ft.).
Auto Choke Troubleshooting (if equipped)
If engine is equipped with auto choke, identify design
and follow appropriate troubleshooting procedure.
NOTE: Procedures may be easier to perform with
engine cover removed. Refer to Disassembly/
Inspection and Service and Reassembly
procedure.
Auto Choke Components - Vacuum/Diaphragm
Design
A
B
E
C
D
A
Bimetallic Spring
Housing
B Linkage
C Diaphragm Assembly D Choke Plate
E Vacuum Hose
A bimetallic spring reacts to mufer heat and moves
linkage that opens or closes choke. A diaphragm that
operates from intake manifold vacuum assists spring
system. These two elements work together to operate
a smooth choke system that facilitates easy reliable
starting.
Use following procedures to troubleshoot vacuum/
diaphragm design auto choke system and its
components. These procedures are to be performed on
a cold engine.
Cover, Element, and Breather Cover
C
A
B
D
A Air Cleaner Cover B Element
C Breather Cover D Air Cleaner Base
1. Remove air cleaner cover, air cleaner, and breather
cover from air cleaner base.
2. Check choke linkage for binding or debris build up.
Gently actuate linkage and observe that choke plate
has full range of movement (open and close).
To Next Page
Loading...
Need help?
General
