Kohler COMMAND CH18, Service Manual

Page: 48 / 232

5.15
Section 5
Fuel System and Governor
5
Figure 5-22. Fuel Bowl Removed From Carburetor.
Figure 5-21. Installing Fuel Bowl.
10. Install the carburetor and the heavy-duty air
cleaner as outlined in Section 11 “Reassembly.”
Disassembly/Overhaul
1. Clean the exterior surfaces of dirt or foreign
material before disassembling the carburetor.
Remove the four mounting screws and separate
the fuel bowl from the carburetor. Transfer any
remaining fuel into an approved container.
Remove and discard the old O-Rings. Fuel can
also be drained prior to bowl removal by
loosening/removal of the bowl drain screw. See
Figure 5-22.
Fuel Bowl
Bowl Drain Screw
Figure 5-23. Removing Float and Inlet Needle.
3. Use an appropriate size flat screwdriver, and
carefully remove the two main jets from the
carburetor. Note and mark the jets by location
for proper reassembly. The main jets may be
size/side specific. After the main jets are
removed, the main nozzles can be removed out
through the bottom of the main towers. Note the
orientation/direction of the nozzles. The end with
the two raised shoulders should be out/down
adjacent to the main jets. Save the parts for
cleaning and reuse. See Figure 5-24.
9. When the proper float height is obtained,
carefully reinstall the fuel bowl, using new
O-Rings onto the carburetor. Secure with the
four original screws. Torque the screws to
2.5 ± 0.3 N·m (23 ± 2.6 in. lb.) . See Figure 5-21.
NOTE: Further disassembly of the fuel bowl is not
necessary unless the Fuel Solenoid Kit, or
Fuel Bowl Kit (obtained separately), will also
be installed.
2. Remove the float pin screw and lift out the old
float, pin, and inlet needle. See Figure 5-23.
Discard all the old parts. The seat for the inlet
needle is not serviceable, and should not be
removed.
Main Nozzles
Main Jets
Figure 5-24. Main Jets and Nozzles Removed.