Kohler COMMAND PRO CS Series User Manual download pdf (Page 14)

Idle Fuel

Needle

Idle Speed

Screw

Muffler Screen and Spark Arrestor CS8.5,CS10,CS12

CAUTION!

The engine and muffler will be very hot after the engine

has been run. Avoid touching the engine and muffler

while they are still hot, with any part of your body or

clothing.

1. Remove the muffler screen.

2. Remove the spark arrestor using a flatblade

screwdriver.

3. Clean the carbon deposits out of the muffler

screen and spark arrestor using a wire brush.

CAUTION!

When cleaning, use the wire brush lightly to avoid

damaging or scratching of the muffler screen and

spark arrestor.

4. Check the muffler screen and spark arrestor,

replace if damaged.

5. Install the spark arrestor and muffler screen.

Figure 18. Muffler Screen and Spark Arrestor.

Carburetor Troubleshooting and

Adjustments

NOTE: Carburetor adjustments should be made only

after the engine has warmed up.

The carburetor is designed to deliver the correct

fuel-to-air mixture to the engine under all operating

conditions. The high idle mixture is set at the factory

and cannot be adjusted. The low idle fuel adjusting

needle is also set at the factory and has a limiting cap.

It normally does not need adjustment.

If the engine is hard to start, runs roughly, or stalls at

low idle speed, it may be necessary to adjust or

service the carburetor.

Figure 19. Carburetor.

Troubleshooting

If engine troubles are experienced that appear to be

fuel system related, check the following areas before

adjusting the carburetor.

• Make sure the fuel tank is filled with clean, fresh

gasoline.

• Make sure the fuel tank cap vent is not blocked

and that it is operating properly.

• Make sure the fuel shut-off valve is fully open.

• Make sure fuel shut-off valve strainer, and in-line

fuel filter (if used) are clean and unobstructed.

Clean or replace as necessary.

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Kohler COMMAND PRO CS Series User Manual Page 14

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