Ms021/ms025

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Kennyman

ArboristSite Lurker
Joined
May 26, 2018
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The question I have is I've recently torn into a ms021 and found to be a little low on compression and the bearings for the connecting rod are toast..I have a donor ms025 that has a good crank assembly the piston itself was shot so I swapped and mounted the 021 piston hardware onto it now I notice the head room has changed at the top of my stroke. piston hits the top of the cylinder my question is would it be as easy as going to the machine shop to have them take a little more material of the top of the cylinder to make up for the head room change? hoping one of these stihl guys can chime in thanks
 
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