Zama Z0030182A Main Mixture Adjustment Screw Carburetor

The Zama Z0030182A is a genuine OEM main mixture adjustment screw designed for Zama diaphragm carburetors. This critical component controls fuel flow at high-speed operation, allowing precise tuning of the air-fuel mixture for optimal engine performance in chainsaws, string trimmers, leaf blowers, and other two-cycle outdoor power equipment.

Key Features:

• Genuine Zama replacement part ensures proper fit and function
• Controls high-speed fuel mixture for peak engine performance
• Precision-machined needle design for accurate adjustment
• Direct replacement for worn or damaged mixture screws
• Compatible with various Zama carburetor models

The main mixture screw (often marked with an "H" for high-speed) regulates fuel delivery when the engine is running at full throttle. A damaged or worn needle point can result in difficult adjustments and cause the engine to run too rich or too lean. This genuine Zama replacement ensures reliable carburetor tuning and proper engine operation. Turning the screw clockwise leans the mixture, while counterclockwise richens it for optimal performance across the RPM range.