The only caveat is that the original part that was fitted to the saw doesn't have a rectangular metal 'holder' which I think is a safety measure to prevent the spring from going into the Engine bore reached after carbon wears out. Luckily we were able to tell the difference between the original part and this replacement by having a half worn 2nd OEM brush in the saw and seeing its construction. However, the replacement parts were easy to install and the saw runs like new for $10 for parts. :)
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