Kohler CH11-16 User Manual

5.5
Section 5
Fuel System and Governor
5
Condition Possible Cause/Probable Remedy
3. Engine runs lean
(indicated by misfiring,
loss of speed and power,
governor hunting, or
excessive throttle
opening).
1. Engine starts hard, or
runs roughly or stalls at
idle speed.
2. Engine runs rich
(indicated by black,
sooty exhaust smoke,
misfiring, loss of speed
and power, governor
hunting, or excessive
throttle opening).
4. Fuel leaks from
carburetor.
1. Low idle fuel mixture or speed are improperly adjusted. Adjust the low idle
speed screw, then adjust the low idle fuel needle (adjustable carburetors), or
clean the carburetor as required (fixed jet carburetors).
2a. Choke partially closed during operation. Check the choke lever/linkage/self-
relieving mechanism to ensure choke is operating properly.
b. Low idle fuel mixture is incorrect. Adjust low idle speed screw, then adjust
low idle fuel needle (adjustable carburetors), or clean the carburetor
passages as required (fixed jet carburetors).
c. Float level is set too high. With fuel bowl removed and carburetor inverted,
the exposed surface of float must be parallel with the bowl gasket surface of
the carburetor body.
d. Dirt under the fuel inlet needle. Remove needle; clean needle and seat and
blow with compressed air.
e. Air filter dirty or restricted.
f. Bowl vent or air bleeds plugged. Remove fuel bowl, low idle fuel adjusting
needle, (not on all models), and welch plugs. Clean vent, ports, passages and
air bleeds. Blow out all passages with clean, compressed air.
g. Leaky, cracked, or damaged float. Submerge float to check for leaks.
3a. Low idle fuel mixture incorrect. Adjust the low idle speed screw, then adjust
low idle fuel needle (adjustable carburetors), or clean the carburetor
passages as required (fixed jet carburetors).
b. Float level is set too low. With fuel bowl removed and carburetor inverted,
the exposed surface of float must be parallel with the bowl gasket surface of
the carburetor body.
c. Idle holes plugged; dirt in fuel delivery channels. Remove fuel bowl, low idle
fuel adjusting needle (not on all models) and welch plugs. Clean main fuel jet
and all passages; blow out cleaned compressed air.
4a. Float level set too high. See Remedy 2c.
b. Dirt under fuel inlet needle. See Remedy 2d.
c. Bowl vent plugged. Remove fuel bowl and clean bowl vent. Blow out with
compressed air.
d. Float is cracked or damaged. Replace float.
e. Bowl gasket damaged. Replace gasket.
f. Bowl screw or shut-off solenoid loose or gasket damaged. Tighten/torque
screw to specifications.

Kohler CH11-16 Specifications

General

Brand	Kohler
Model	CH11-16
Category	Engine
Language	English