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

Needle valve fixing screw for 65LA

This fixing screw is the replacement fastening component named in the original part title, intended for use with needle valve unit assemblies identified by 65LA. It is an RC‑scale accessory that secures the needle valve assembly and helps keep the valve seating consistent during operation.

Installation is straightforward for hobby technicians familiar with glow engine assemblies: remove the needle valve unit cover or retaining plate, position the needle valve assembly, and fit the fixing screw into the original mounting point until the unit is held without play. Avoid overtightening to prevent damage to surrounding components.

In tuning and maintenance, this screw’s role is to maintain stable needle position so that fuel mixture adjustments remain repeatable. Check the fixing point after initial runs and routine servicing to verify retention and consistent throttle response on RC model engines.