00006421239 Stihl .325 ST Rim 7-9 tooth


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Part Number 00006421239 Part Number 00006421239 Categories: ,

NB: Be aware changing up the drive rim to a larger diameter can increase the drive link count required by your bar to increase by one drive link and you don’t know until you have fitted everything up.

THE most neglected and least checked part of the bar, chain sprocket combo. Folks will spend £s on new bars and chains and their worn out drive sprocket will wear them 3-5 times as fast. Heat build up/chain de-rail/peened drive links/nose sprocket blow outs can often be attributed to this part. How many times have we heard ‘but the saw is still pretty new?’ – does not matter – if that drive sprocket is worn it is worn so take the time to check it and change it. Also learn the differences between a spur sprocket and rim sprocket – click here for this]



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