Cub Cadet 6X4 Shop Handbook page 215

NOTE: A photo tachometer can be used on the
driving clutch element, which is connected
directly to the engine crankshaft. A photo
tachometer used on the driven clutch element
will not register correct engine RPM.
3. Lift the cargo box, release the camloc® fasten-
ers that secure the engine cover and remove the
engine cover to reach the throttle linkage.
4. Before adjusting the idle speed or governor, con-
firm that the throttle cable operates properly:
4a. Look for physical damage.
4b. Operate the throttle and observe the
movement.
4c. "Blip" the throttle pedal, looking for consis-
tent engine response and return to idle.
5. If the throttle cable linkage is suspect, isolate the
engine governor from the throttle cable to con-
firm the source of the problem.
CAUTION: Some of the following adjustments
are made or checked with the engine running.
Before making these adjustments, confirm that
no unsafe conditions will arise from running the
engine. Possible unsafe conditions include, but
are not limited to: fire hazard, exposure to hot or
rotating parts, asphyxiation, and carbon monox-
ide poisoning.
6. To adjust the engine speed, remove the air filter
cover, but not the air filter.
NOTE: Service the air filter if it is dirty. A
blocked air filter will effect idle speed.
NOTE: The principle in making this adjustment
is to start at the source (engine) and work toward
the input (throttle pedal).
Chapter 7 - Kohler Engine Service Access and Fuel System
7. The governed idle can be adjusted by bending
the tab that holds the light spring that applies
tension between the governor bracket and the
governor arm. It should be set to achieve steady
idle of 1,300 RPM. See Figure 7.47.
Governed idle
spring
Governed
idle tab
8. After the governed idle is set, the carburetor
throttle stop should be set: See Figure 7.48.
• Apply light force to the governor arm, bringing
the engine below governed idle speed pushing
the throttle arm against the throttle stop screw.
• Adjust the throttle stop to 1,100 RPM using a
phillips head screw driver.
211
Figure 7.47
Throttle stop screw
Figure 7.48