Kohler K9J Service Manual page 31

Cleaning
WARNING: Flammable Solvents!
Carburetor cleaners and solvents are
extremely flammable. Keep sparks,
flames and other sources of ignition
away from the area. Follow the
cleaner manufacturer's warnings and
instructions on its proper and safe
use. Never use gasoline as a clean-
ing agent.
All parts should be carefully cleaned using a car-
buretor cleaner (such as acetone). Be sure all
gum deposits are removed from the following ar-
eas:
Carburetor body and bore; especially the areas
where throttle plate, choke plate and shafts are
seated.
Float and float hinge.
Fuel bowl.
Idle fuel and "off-idle" ports in carburetor bore,
ports in main fuel adjusting needle and main
fuel seat.
NOTE: These areas can be cleaned using a piece
of fine wire in addition to cleaners. Be careful not
to enlarge the ports or break the cleaning wire
within the ports.
Blow out all passages with compressed air.
NOTE: Do not submerge carburetor in cleaner or
solvent when fiber or rubber seals are installed.
The cleaner may damage these seals.
Inspection
1 . Carefully inspect all components and replace
those that are worn or damaged.
2. Inspect the carburetor body for cracks, holes
and other wear or damage.
3. Inspect the float for dents or holes. Check the
float hinge for wear and missing or damaged
float tabs.
4. Inspect the inlet needle and seat for wear or
grooves.
5. Inspect the tips of the main and idle fuel ad-
justing needles for wear or grooves.
Inspect the throttle and choke shafts and plate
assemblies for wear or excessive play.
Main Fuel
V N e e d l e
Idle Speed
Screw
\
J~/
~pring
/ S p r i n g
iJ /
Carburetor
Body
@
,-~~~~
Idle Fuel
Needle /
~~:! ~~~ ~-==-~-------- ~~:~
. .
Gasket
e
~
Baffle
Fuel/~ ~~Gasket
II
Inlet
j
~
Float
Seat
~~Hinge
Fuellnlet
~
Needle \
Float~ r-~---~~
Float
p;,
Fuel ____
1 ~
Bowl
Bowl
Retaining-~
Screw
~--Bowl
Retaining
Screw Gasket
Figure 6-7. Kohler-Built Adjustable Jet
Carburetor - Exploded View.
Choke Plate Modification
The choke action has been changed on production
carburetors to reduce the chances of over chok-
ing. On production carburetors now used on the
K321 and K341 , both relief holes in the choke
plate have been enlarged to 11 /32" while on the
K241 and K301, one relief hole is now 11/32" and
the other is 3/16" . If you find that the relief holes
are smaller than this, enlarge them to these di-
mensions.
NOTE: When redrilling the holes, take the neces-
sary precautions to prevent chips from entering
the engine.
Repair
Always use new gaskets when servicing and rein-
stalling carburetors. Several repair kits, which in-
clude the gaskets and other components, are
6.5