Small Engine Troubleshooting Problems? Ask a Mechanic Now.
The cups on each side have to be adjusted as close to the center cones as they can without rubbing them, and they need to be squared, so they are same forward as reverse, Here is basic adjustments. I use a small carpenter square on mine. 4422 has same setup as the 428.
After making the adjustments, then you adjust the arm linkage.
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