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SECTION 6A
FUEL SYSTEMS AND GOVERNORS
All parts should be carefully cleaned using a carbure-
tor cleaner (such as acetone). Be sure all gum depos-
its are removed from the following areas:
Carburetor body and bore; especially the areas
where throttle plate, choke plate and shafts are
seated.
* Float and float hinge.
* Fuel bowl.
e Idle fuel and "off-idle" ports Іп carburetor bore,
ports In main fuel adjusting needle, and main
fuel seat. (Note: these areas can be cleaned
using piece of fine wire in addition to cleaners.
Be careful not to enlarge the ports, or break the
cleaning wire within ports.)
Blow out all passages with compressed air.
NOTE:
Do not submerge carburetor in cleaner or sol-
vent when fiber and rubber seals are installed.
The cleaner may damage these seals.
Inspection
Carefully inspect all components and replace those
that are worn or damaged.
* Inspect the carburetor body for cracks, holes, and
other wear or damage.
* Inspect the float for dents or holes. Check the
float hinge tor wear, and missing or damaged float
tabs.
* Inspect the intet needle and seat for wear or
grooves.
* Inspect the tips of the main fuel and idle fuel ad-
justing needles for wear or grooves.
* Inspect the throttle and choke shaft and plate as-
semblies for wear or excessive play.
CARBURETOR REPAIRS
Always use new gaskets when repairing and reinstall-
ing a carburetor. The following covers the kits avail-
able for reconditioning the Kohler-built 1" venturi size
gasoline fuel carburetors used on the M18 & M20 en-
gines. Three repair kits, one Choke and one Throttle
Shaft Replacement Kits are now available. (Refer to
Figure 6A-7 for components described in the
following.)
Carburetor Repair Kits No. 25 757 01 and
No. 25 757 02 Contains:
These kits include all gaskets and fuel inlet compo-
nents generally used in reconditioning a Kohler-built
1" carburetor. Kit No. 25 757 01 is for basic carbure-
tors while 25 757 02 is used for carburetors with float
dampening springs.
Qty.
| Description
Gasket, bow! retaining screw
Gasket, bowl ring
Gasket, baffle
Gasket, fuel inlet seat
Needle and Seat, fuel inlet
Pin, float hinge
Float Repalr Kit No. 25 757 03 Contalns:
Use this kit to replace damaged or leaking floats on
all Kohler-built 1" carburetors.
Description
Float Assembly
Gasket, battle
Choke Shaft Replacement Kit No. 25 757 21
This kit is used to replace wom or damaged choke
shaft assemblies. Each kit contains installation in-
structions and the following components.
Qty.
| Description
Gasket, bowl retaining screw
Gasket, bowl ring
Gasket, baffle
Spring, choke shaft
Ball, choke shaft
Screw, slotted head machine
Shaft, choke
Bushings, choke shaft
Sealer, Loctite® No. 609
Screw, slotted bind head
о-о
ааа
бА.6
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