O.S. Engine OS72200080 Model Engine Needle-valve Cable Set  [OS72200080]

Overview of the needle extension kit

The O.S. Engine OS72200080 needle-valve extension cable set is supplied as an accessory to give remote control of the carburettor needle on model engines, helping hobbyists adjust mixture or idle without removing components.

Compatibility notes: use the set when you need to move the needle access point to a more convenient external location on the model. Prior to fitting, inspect likely cable paths and clearances to be sure the route will be free from obstructions.

How it helps tuning: route the extension from the carburettor to the external access, secure it to avoid rubbing or kinks, and confirm smooth operation of the needle before running. The extension lets you fine tune needle settings externally rather than repeatedly opening the model for access.