Kohler CV11-16, Service Manual

Page: 49 / 150

5.19
Section 5
Fuel System and Governor
5
Starting an Engine Equipped with Separate
Control Cables
1. Place the throttle control midway between the
"slow" and "fast" positions. Place the choke
control into the "on" position.
2. Start the engine.
3. For a Cold Engine – Gradually return the choke
control to the "off" position after the engine starts
and warms up.
The engine/equipment may be operated during
the warm up period, but it may be necessary
to leave the choke partially on until the engine
warms up.
4. For a Warm Engine – Return choke to "off"
position as soon as engine starts.
Changing the High Idle RPM on Engines with
Separate Controls
(Increase or Decrease RPM)
See Figure 5-25 on page 5.18.
1. Loosen the high idle stop screw retaining nut (top
side of control plate).
2. Start the engine, move the application throttle
lever to full throttle/fast, loosen the throttle cable
clamp screw on the engine control plate.
3. To increase the RPM: Turn high idle stop screw
outward (counterclockwise) and pull on the
throttle control cable until the desired RPM is
obtained.
4. Tighten the throttle cable clamp screw and the
high idle stop screw retaining nut.
5. To assure that the RPM has been obtained,
move the throttle lever to low idle/slow then back
to full throttle/fast and check the RPM with a
tachometer.
6. To decrease the RPM: Follow steps 1 and 2.
Then push the throttle cable in toward the control
bracket assembly to decrease the RPM (check
with a tachometer) until the desired RPM is
obtained. Tighten the cable clamp screw.
7. Turn the high idle stop screw inward (clockwise)
until it stops against the throttle control lever.
Then tighten the stop screw retaining nut.
8. Recheck high idle RPM to assure the required
RPM has been obtained.
Setting the Low Idle RPM
1. Move the application control to slow position.
2. Using a tachometer, check the RPM. Then,
using a screwdriver, turn the low idle stop screw
(located at the top of the carburetor) inward
(clockwise) to increase the RPM and outward
(counterclockwise) to lower the RPM.
Governed Idle Adjustment
A new governed idle control system is now being
supplied on some CV Single Cylinder engines.
The purpose of the new system is to maintain a
desired idle speed regardless of ambient conditions
(temperature, parasitic load, etc.) that often change.
The new system requires an additional procedure
for setting the idle speed. If speed adjustments are
required proceed as follows.
1. Make any necessary speed or control
adjustments following the appropriate instructions
already covered in this section.
2. Move the throttle control to the idle position. Hold
the governor lever away from the carburetor,
so the throttle lever is tight against the idle
speed adjusting screw. Check the speed with a
tachometer and adjust it to 900-1000 RPM. Turn
the screw clockwise to increase the speed and
counterclockwise to decrease the speed.
3. Release the governor lever and allow the engine
to return to the governed idle speed. Check
it with a tachometer against the equipment
manufacturers recommended idle speed. If
adjustment is necessary, use the governed idle
adjusting screw on the speed control assembly
(see Figure 5-26). Turn the screw clockwise
to increase the governed idle speed and
counterclockwise to decrease it.