Carburetor Special Key 21 Tooth Carburetor Carb Adjustment Hand Tool For 125 135 136 137 141 142 235 236 355 This hand tool is designed for carburetor adjustment and features a 21-tooth special key configuration. It is compatible with carburetor models numbered 125, 135, 136, 137, 141, 142, 235, 236, and 355. The tool allows precise tuning of carburetor settings and is intended for manual use in maintenance and repair tasks. Its design supports secure fitment to the adjustment points on specified carburetor types. Disclaimer: This part is produced by a third-party manufacturer. Brand/model mentions are for compatibility illustration only.