Kohler MAGNUM M18

SECTION 6A
FUEL SYSTEMS AND GOVERNORS
Install Throttle Shaft Bushing
1. Make sure the dust seal counterbore in carburetor
body is thoroughly clean and free of chips and
burrs,
2. Instail a throttle shaft (without throttle lever) into
carburetor body to use as a pilot. (Use one of the
remaining new throttle shafts from kit.)
3. Coat the outside surface of throttle shaft bushing
with Loctite® from kit. Slip bushing over shaft.
Using installation tool from kit and vise, press
bushing into counterbore until it bottoms in carbu-
retor body. Refer to Figure 6A-11.
Installation
Tool
Figure 6A-11. installing Throttle Shaft Bushings.
4. Allow Loctite® to “set” for 5-10 minutes then re-
move throttle shaft.
5. install new throttie shaft with lever into carburetor
body. Rotate shaft and check for binding.
NOTE: If binding occurs, locate cause and cor-
rect before proceeding. Use throttle shaft
to align bushing if necessary.
6. Remove shaft and allow Loctite® to "set" for an
additional 30 minutes befare proceeding.
7. Wipe away all excess Loctite® from bushing and
throttle shaft.
Install Detent Spring and Ball,
Choke Shaft, and Choke Plate
1. Install new detent spring and bail into carburetor
body in the side opposite choke lever.
2. Compress detent ball and spring and insert choke
shaft through bushings. Make sure the choke le-
ver is on the correct side of carburetor body. Re-
fer to Figure 6A-12.
Compress Ball
And Spring
Choke Shaft
Figure 6A-12. Installing Choke Shaft.
3. Install choke plate to choke shaft. Make sure
marks are aligned and plate is positioned properly
in bore. Apply Loctite to threads of (2)
#3-48 x 7/32” screws. Install screws so they are
Slightly loose.
4. Operate choke lever. Check for binding between
choke plate and carburetor bore. Loosen screws
and adjust piate as necessary, then tighten
screws securely.
Install Throttle Shaft And Throttle Plate
1. Install throttle shaft into carburetor with cutout por-
tion of shaft facing out.
2. Install throttle plate to throttle shaft. Make sure
marks are aligned and plate is positioned properly
іп bore. Apply Loctite® to threads of (2)
43-48 x 7/32" screws. install screws so they are
Slightly loose.
3. Apply finger pressure to throttle shaft to keep it
firmly seated against pivot in carburetor body.
Rotate the throttle shaft until throttle plate fully
closes the bore around its entire perimeter; then
tighten screws.
6A.10