Needle Valve Fixing Screw for 65LA OS26582920 by O.S. Engine  [OS26582920]

Needle Valve Fixing Screw - 65LA Units

This fixing screw is intended as the replacement fastening piece referenced in the original part title for needle valve unit assemblies designated 65LA. It secures the needle valve assembly to help preserve a consistent seat and predictable fuel flow characteristics during operation.

Fitting is simple for those familiar with glow engine maintenance: remove the needle valve cover or retaining plate, set the needle assembly in the correct orientation, and drive the fixing screw into the original mounting thread until the assembly is snug but free of play. Avoid excessive torque to protect component threads.

During tuning sessions the screw helps maintain needle repeatability so fuel mixture changes remain consistent between runs. Inspect the fixing point after tuning and routine service to confirm the needle remains stable and throttle response is unaffected.