TC102, TCP102, TCR102, TCX102, TC122, TCR122, TCP122, TCX122. Photo 2 shows where the pinion is fitted. Fits on differential for tightening the chain. Fits models from 1996 onwards. Fitted to the following, but will fit models we have missed.
Chain Adjuster Tensioner for STIHL 028 038 chainsaws # 1118 664 1600
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