Kohler Comand Pro CH1000 Service Manual page 41

Slow (Idle Fuel) Jets
O-ring O-ring
Figure 5-22. Slow Jets and O-ring Detail.
5. Remove the idle speed (RPM) adjustment screw
and spring from the carburetor. Discard the parts.
NOTE: The carburetor is now disassembled for
appropriate cleaning and installation of the
parts in the overhaul kit. Further disassembly
is not necessary. The thrott le shaft assembly,
fuel inlet seat, idle fuel adjustment screws
with limiter, and carburetor body, are non-
serviceable items and should not be removed.
The choke shaft assembly is serviceable,
however it should not be removed unless a
Choke Repair Kit will be installed.
6. Clean the carburetor body, main jets, vent ports,
seats, etc., using a good commercially available
carburetor solvent. Keep away from plastic or
rubber parts if non-compatible. Use clean, dry
compressed air to blow out the internal channels
and ports. Do not use metal tools or wire to
clean orifi ces and jets. Inspect and thoroughly
check the carburetor for cracks, wear, or damage.
Inspect the fuel inlet seat for wear or damage.
Check the spring loaded choke plate to make sure
it moves freely on the shaft .
7. Clean the carburetor fuel bowl as required.
8. Install the two main nozzles into the towers
of the carburetor body. The end of the main
nozzles with the two raised shoulders should
be out/down (adjacent to the main jets). Make
sure the nozzles are completely bott omed.
Carefully install the main jets into the towers
of the carburetor body on the appropriate side,
as identifi ed when removal was performed. See
Figure 5-23.
Fuel System and Governor
Nozzle End with
Two Shoulders
(Out/Down)
Figure 5-23. Installing Main Nozzles and Main Jets.
9. Make sure the O-ring near the bott om of each
slow jet is new, or in good condition. Align
and insert the two slow jets into the top of the
carburetor. See Figure 5-22.
10. Install the large fl at retaining washer and secure
with the mounting screw, att aching the ground
lead if originally secured by the screw.
11. Install the new idle speed (RPM) adjustment
screw and spring onto the carburetor. Thread
in until 3 or 4 threads are exposed, as an initial
adjustment. See Figure 5-24.
Idle Speed
Screw and
Spring
Figure 5-24. Installing Idle Speed Adjusting Screw
and Spring.
Section 5
Main
Jets
5.11
5