| 摘要 |
A carburetor for an internal combustion engine has an idle adjust screw. A cover is provided for encompassing the idle adjust screw so as to prevent any readjustment of the idle adjust screw by an operator. The cover is not removable once the carburetor is mounted on the intake pipe so that carburetor settings can be maintained. The cover may be formed with a slot of special configuration so that adjustment may be made only with a specially designed tool.
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