• Genuine OEM quality for perfect fit
• Simplifies fueling in cold or dry conditions
• Reduces engine strain from prolonged cranking

This screw keeps your pit area organized by streamlining startups, letting you focus on strategy rather than mechanical fiddling—vital for time-sensitive heats where seconds count toward pole position.

Frequently Asked Questions

Q: What is the primary purpose of the Tillotson pumper screw?

A: The pumper screw is designed to manually prime your single stack carburetor. By manually pumping fuel into the system before you crank the engine, you reduce the time spent turning the engine over, which saves your starter and battery while ensuring a quicker start.

Q: Is this screw compatible with all Tillotson carburetors?

A: No, this specific component (SKU: TPS) is engineered exclusively for single stack carburetors. It will not fit double stack or other specialized carburetor configurations.

Q: How do I use the pumper screw during my start routine?

A: Simply turn the screw to manually actuate the pump diaphragm, allowing fuel to flow into the carburetor throat. Once you see or feel the fuel system prime, return the screw to its operating position before starting the engine.

Q: Why is this part important for racing?

A: In competitive karting, every second counts. Using this screw to eliminate "hard starts" ensures you don't waste time in the pits or on the grid, allowing you to focus entirely on your race strategy rather than troubleshooting engine ignition issues.

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