232238 50 Description Spring Pilot Air

This Mikuni HSR pilot air spring is designed to provide the necessary tension for the pilot mixture screw on HSR series carburetors. The spring ensures that the pilot screw remains in its set position despite engine vibrations, preventing the idle mixture from drifting over time. Made from durable spring steel, it is a small but vital component for maintaining the stability of the carburetor's low-speed circuit. This genuine Mikuni part is a direct replacement for lost or fatigued springs during carburetor maintenance or tuning sessions on HSR42, HSR45, or HSR48 models.