Zama 0030028 Main Mixture Screw Carburetor Adjustment Screw

The Zama 0030028 is a genuine OEM replacement main mixture screw designed for use in Zama carburetors found on small engines across chainsaws, trimmers, blowers, and other outdoor power equipment. This precision-machined screw controls the fuel-to-air ratio at the main jet circuit, allowing technicians to fine-tune engine performance for optimal combustion efficiency.

Key Features:

• Genuine Zama OEM replacement part — ensures correct fit and function
• Controls main fuel mixture for precise air/fuel ratio tuning
• Precision-machined for accurate adjustment and consistent sealing
• Compatible with a wide range of Zama carburetor models used in outdoor power equipment
• Essential component for carburetor rebuild, repair, or tune-up
• Durable construction for long service life under high-vibration conditions

The main mixture screw is a critical carburetor component that directly affects engine throttle response and power output. Replacing a worn, damaged, or stripped mixture screw restores proper fuel metering and smooth engine operation. This part is recommended for use by small engine technicians and experienced DIY mechanics during carburetor service or rebuild procedures.