Stihl TS420 pull start par

This part comes off a TS420 Stihl. It is a part in the pull start mechenism that brakes over time. I believe the concrete saw heats up after prolonged use and this part turns gushy and looses its intgrety. You shut off the saw to take a quick brake the restart it to begin work again 5 min later. This is when this part is torn up and lodges between the pull start and the friction hub on the saw. Now when you pull the chord to start it, it just spins. Nothing is grabbing the friction hub on the saw and spinning it to start. This part solves that problem with a quick print and replace. Otherwise you have to buy a 20 dollar kit or a new pull start assembly.