Zama Z0030706 Main Mixture Screw Carburetor Needle Adjustment Screw

The Zama Z0030706 is an OEM replacement main mixture screw (also known as a high-speed needle or H-needle) designed for use in Zama diaphragm carburetors found on small two-stroke and four-stroke power equipment. This precision-machined needle screw controls the fuel-to-air mixture at high throttle settings, ensuring proper engine performance and combustion efficiency.

Key Features:

• OEM Zama replacement part — ensures correct fit and function in compatible Zama carburetors
• Controls high-speed fuel mixture for optimized engine performance
• Precision-machined needle tip for accurate, repeatable fuel metering
• Compatible with Zama carburetors used on chainsaws, trimmers, blowers, and other handheld power equipment
• Direct factory replacement — restores carburetor to original specification

A worn or damaged main mixture screw can cause hard starting, poor high-speed performance, or an engine that runs too rich or too lean. Replacing it with a genuine Zama Z0030706 restores precise fuel delivery and reliable operation. Always inspect the needle tip for deformation before reinstallation — a damaged tip will result in a carburetor that is difficult to tune.