Someone at the last mtg asked about the bolt retention for the gear in the back of the sm420.
Here is a pix..
drill and tap the the sm420 washer for the #10 screw to fit into the spline of the gear, then attach the flat washer to the big washer with the #10 screw. The screw in the gear will keep it from turning, then bend the flat washer bent up with a punch. It will hold the bolt. I also red locktight and torque to 60ftlbs.
hope that made sense....
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