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Tillotson PK Idle Mixture Screw
308080039 Tillotson Idle Mixture Screw
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Tillotson PK Idle Mixture Screw

Part Number: 308080039
Online Price: $1.00
Availability: In Stock.

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Tillotson Idle Mixture Screw for Tillotson PK Carburetor

The idle mixture controls the amount of fuel going through the idle port of the carburetor. You'll tune the idle fuel mixture with the idle speed screw to set the engine to idle rpm. When adjusting the low side jet, the idle mixture screw is vital; otherwise, you may not get the engine to idle. Most EPA engines and carburetors do not have idle mixture screws to prevent adjustments to the carburetor. 

Idle Mixture screw works with Tillotson PK carbs but not the Ruixing or most other clone carburetors.


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