Choke Adjustments; Above 10° F (-12.2° C); Procedure For Operation Below 10° F (-12.2° C) - Kohler 4CKM Operation And Installation Manual

A Kohler thermo-electric automatic choke is used to
enrich the gasoline fuel mixture during starting. The
choke automatically closes as the ambient temperature
cools or as the engine temperature decreases. As the
engine warms, the coils inside the choke allow the choke
plate to open. If readjustment is needed, loosen the two
screws securing the choke bracket to the carburetor and
shift the position of the choke assembly (Figure 3-13).
When properly set, the choke plate will be within 5 to 10
degrees of full open at approximately 70° F (21° C).
1
3
1. Scribe Mark
2. Casting Mark
3. Adjusting Screws
Figure 3-13. Automatic Choke Adjustment
TP-5393 9/93

Choke Adjustments

For Operation above 10_ F (-12.2_ C)
(From original factory-set position)
2
For Operation below 10_ F (-12.2_ C)
1-905
Choke Adjustment Procedure
1. Where the choke casting mark meets the black
plastic cover of the choke, make a scribe mark on
the choke' s black cover. See Figure 3-13.
2. Loosen the two choke adjusting screws and rotate
choke cover counterclockwise towards leaner
setting (follow direction of arrow on choke).
3. When the distance between the scribe mark on the
black cover and the casting mark is 5/16 in. (8 mm)
tighten the two choke adjusting screws.
Choke Adjustment Procedure
NOTE
If not previously adjusted, leave as factory set.
Otherwise, follow procedure below.
1. If scribe mark has been made on the choke' s black
cover, loosen the two choke adjusting screws and
rotate choke cover clockwise (opposite direction of
arrow on choke).
2. When the scribe mark on the black plastic cover of
the choke and the choke casting mark line up,
tighten the two adjusting screws.
Scheduled Maintenance 3-11