Kohler K9J Service Manual page 30

PRELIMINARY SETTINGS - K-SERIES MODELS
KOHLER ADJUST ABLE JET
WALBRO FIXED JET
Low Idle High Idle Low Idle
K91 1-1/2 turns
2 turns
NOT APPL.
NOTE: Refer to publica-
K141
1-1/2 turns 3 turns
NOT APPL.
tion TP2377B Carburetor
K161* 1-1/2 turns
3 turns
NOT APPL.
Reference Manual for
K181* 1-1/4turns 2 turns 2-1/2 turns
additional information.
K241 2-1/2 turns 2 turns 1-1/4 turns
K301 2-1/2 turns 2 turns 1-1/4turns
K321 2-1/2 turns 3-1/4 turns 1-1/2 turns
K341 2-1/2 turns 3-1/2 turns 1 turn
• Includes "New Look" Models
Figure 6-4. Preliminary Low Idle And High Idle Fuel Needle Settings.
6. Low Idle Fuel Needle Setting: Place the throttle
into the "idle" or "slow" position.
Turn the low idle fuel adjusting needle out (coun-
terclockwise) from the preliminary setting until the
engine speed decreases (rich). Note the position
of the needle.
Now turn the adjusting needle in (clockwise). The
engine speed may increase, then it will decrease
as the needle is turned in (lean). Note the position
of the needle.
Set the adjusting needle midway between the rich
and lean settings. See Figure 6-5.
7. Recheck the low idle speed using a tachome-
ter. Readjust the speed as necessary.
Adjust To
Midpoint
Lean
Figure 6-5. Optimum Low Idle Fuel Setting.
Disassembly
(Refer to Figure 6-7)
1 . Remove the bowl retaining screw, retaining
screw gasket and fuel bowl.
6.4
2. Remove the float pin, float, fuel inlet needle,
baffle gasket and bowl gasket.
3. Remove the fuel inlet seat and inlet seat gas-
ket. Remove the idle fuel and main fuel adjust-
ing needles and springs. Remove the idle
speed adjusting screw and spring.
4. Further disassembly to remove the throttle and
choke shafts is recommended only if these
parts are to be replaced. Refer to "Throttle
and Choke Shaft Replacement" later in this
section.
Idle
Speed
Screw
Main Fuel
~Needle
Figure 6-6. Kohler-Built Adjustable Jet
Carburetor.