Readjustment preventing structure for adjustment member

Abstract

A structure for preventing from readjusting an adjustment member, which adjusts an extent of operation by rotating the adjustment member, and more particularly, for preventing from readjusting an adjustment member in a carburetor. The structure for the adjustment member includes a hollow tube of a heat shrinkable resin to be fitted around the outer surface of a rotating operational portion of the adjustment member in such a manner that when the hollow tube is heated to be shrunk, it is securely fixed around the outer surface of the adjustment operational portion. Owing to such an arrangement, it will be impossible to fit a tool or the like onto the adjustment operational portion of the adjustment member once it has been available to the user, thus preventing the readjustment. Even if it is readjusted, the readjustment will be easily recognized during a particular inspection of performance. Besides, a special cap like this is difficult to obtain, thereby preventing the user from disguising the adjustment member by installing a new one after destroying the original cap and conducting the readjustment.

Dependencies are inferred from the claim text.