Repairing Stihl MS660 Top Spike Mount.

This is not a common problem with Stihl MS660s, but happens occasionally when the operater allows the screws to vibrate loose (caused by operaters lack of chain/sprocket maintainance) & pull out through the housing.

This is a broken out spike mount on a Stihl MS660.

Here I have ground out & magnesium welded the housing, ready to be drilled to remount spike.

I have drilled ready for screw to be installed.