Kohler Command Pro CV980 - Manual (Page 39)

5.11
Section 5
Fuel System and Governor
5
śǯȱ Ž–˜ŸŽȱ‘Žȱ’•Žȱœ™ŽŽȱǻǼȱŠ“žœ–Ž—ȱœŒ›Ž ȱ
and spring from the carburetor. Discard the parts.
DZȱ ‘ŽȱŒŠ›‹ž›Ž˜›ȱ’œȱ—˜ ȱ’œŠœœŽ–‹•Žȱ˜›ȱ
appropriate cleaning and installation
of the parts in the overhaul kit. Further
disassembly is not necessary. The
‘›˜Ĵ•Žȱœ‘ŠĞȱŠœœŽ–‹•¢ǰȱžŽ•ȱ’—•ŽȱœŽŠǰȱ
idle fuel adjustment screws with limiter,
and carburetor body, are non-serviceable
items and should not be removed. The
Œ‘˜”Žȱœ‘ŠĞȱŠœœŽ–‹•¢ȱ’œȱœŽ›Ÿ’ŒŽŠ‹•Žǰȱ
however it should not be removed
unless a Choke Repair Kit will be
installed.
ȱ Ŝǯȱ •ŽŠ—ȱ‘ŽȱŒŠ›‹ž›Ž˜›ȱ‹˜¢ǰȱ–Š’—ȱ“ŽœǰȱŸŽ—ȱ™˜›œǰȱ
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
Œ•ŽŠ—ȱ˜›’ęŒŽœȱŠ—ȱ“Žœǯȱ—œ™ŽŒȱŠ—ȱ‘˜›˜ž‘•¢ȱ
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
’ȱ–˜ŸŽœȱ›ŽŽ•¢ȱ˜—ȱ‘Žȱœ‘ŠĞǯ
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
‹Žȱ˜žȦ˜ —ȱǻŠ“ŠŒŽ—ȱ˜ȱ‘Žȱ–Š’—ȱ“ŽœǼǯȱŠ”Žȱ
œž›Žȱ‘Žȱ—˜££•ŽœȱŠ›ŽȱŒ˜–™•ŽŽ•¢ȱ‹˜Ĵ˜–Žǯȱ
Carefully install the main jets into the towers
of the carburetor body on the appropriate side,
Šœȱ’Ž—’ꮍȱ ‘Ž—ȱ›Ž–˜ŸŠ•ȱ Šœȱ™Ž›˜›–ŽǯȱŽŽȱ
’ž›ŽȱśȬŘřǯ
Figure 5-23. Installing Main Nozzles and Main Jets.
ȱ şǯȱ Š”Žȱœž›Žȱ‘ŽȱȬ’—ȱ—ŽŠ›ȱ‘Žȱ‹˜Ĵ˜–ȱ˜ȱŽŠŒ‘ȱ
œ•˜ ȱ“Žȱ’œȱ—Ž ǰȱ˜›ȱ’—ȱ˜˜ȱŒ˜—’’˜—ǯȱ•’—ȱ
and insert the two slow jets into the top of the
ŒŠ›‹ž›Ž˜›ǯȱŽŽȱ’ž›ŽȱśȬŘŘǯȱ
ȱŗŖǯȱ —œŠ••ȱ‘Žȱ•Š›Žǰȱ̊ȱ›ŽŠ’—’—ȱ Šœ‘Ž›ȱŠ—ȱœŽŒž›Žȱ
’‘ȱ‘Žȱ–˜ž—’—ȱœŒ›Ž ǰȱŠĴŠŒ‘’—ȱ‘Žȱ›˜ž—ȱ
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
Š“žœ–Ž—ǯȱŽŽȱ’ž›ŽȱśȬŘŚǯ
Figure 5-24. Installing Idle Speed Adjusting Screw
and Spring.
ŗŘǯȱ ĴŠŒ‘ȱ‘Žȱ’—•Žȱ—ŽŽ•Žȱ˜ȱ‘Žȱ™•Šœ’ŒȱŠ—ȱ˜ȱ
‘Žȱ̘Šȱ ’‘ȱ‘Žȱ ’›ŽȱŒ•’™ǯȱ‘Žȱ˜›–ŽȱşŖǚȱ•’™ȱ
should point up, with the needle valve hanging
˜ —ǯȱŽŽȱ’ž›ŽȱśȬŘśǯ
Figure 5-25. Float and Inlet Needle Details.
ȱŗřǯȱ —œŠ••ȱ‘Žȱ̘ŠȱŠ—ȱ’—•Žȱ—ŽŽ•Žȱ˜ —ȱ’—˜ȱ‘Žȱ
seat and carburetor body. Install the new pivot
™’—ȱ‘›˜ž‘ȱ‘Žȱ̘Šȱ‘’—ŽȱŠ—ȱœŽŒž›Žȱ ’‘ȱ‘Žȱ
—Ž ȱ›ŽŠ’—’—ȱœŒ›Ž ǯȱŽŽȱ’ž›ŽȱśȬŘŜǯ
Idle Speed
Screw and
Spring
Nozzle End with
Two Shoulders
(Out/Down)
Main
Jets