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5. Final Setting – Idle Fuel: Place throttle into idle
or slow position. Set idle fuel adjusting needle
using the same procedure as in Step 4.
NOTE: To ensure best results when setting idle
fuel mixture, the idle speed must not ex-
ceed 1500 RPM.
Typical idle speed is
1200* RPM. See Step 6.
6. Idle Speed Setting: Place throttle into idle or
slow position. Set idle speed to 1200* RPM
(* or - 75 RPM) by turning the idle speed adjust-
ing screw in or out.
*NOTE: The actual idle speed depends on the
application. Refer to the equipment man-
ufacturer's instructions for specitic idle
speed settings.
Disassembly
(Refer to Figure 6A-7.)
1. Remove the bowl retaining screw, retaining screw
gasket, and fuel bowl.
2. Remove the float pin, float, fuel inlet needle, baffle
gasket, and bowl gasket.
3. Remove the fuel inlet seat and inlet seat gasket.
Remove the idle fuel and main fuel adjusting
needles and springs. Remove the idle speed ad-
justing screw and spring.
4. Further disassembly to remove the throtlle and
choke shafts is recommended only if these parts
are to be replaced. Refer to "Throttle And Choke
Shaft Replacement."
SECTION 6A
FUEL SYSTEMS AND GOVERNORS
Main Fuel
"d Needle
Gasket
Idle Speed
;
Screw
Spring
|!
Spring
ФО
Bl
Carburetor
2
Body
by
TT
Idle Fuel
Ses
Bowl
Needle
Fai
d
Gasket
Fuel Inlet
z
=н.
Seat —
0.
Baffle
Gasket
8
s
m
СУ
Seat
x
-
=
Fuel Inlet
Sy
Needle
X
Float Pin
Float Hinge
Fuel Х|
Bowl
S
2
Figure 6A-7.
Kohier-Built Adjustable Jet
Carburetor - Exploded View.
Cleaning
A
WARNING:
Flammable Solvents!
Carburetor cleaners and solvents are extremely flam-
mable. Keep sparks, flames, and other sources of
ignition away from area. Follow the cleaner manufac-
turer's warnings and instructions on its proper and
safe use. Never use gasoline as a cleaning agent.
64.5
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