The feed dog motor needs re-calibrating. If recalibrating does not resolve the problem, the feed dog stepper motor may need to be replaced. These tasks have to be done by a certified Husqvarna Viking service technician. Suggest that you take it to an authorized husqvarna viking dealer for service. You can locate a dealer near you by visiting the husqvarna viking website and clicking on the Dealer link on the left-hand side of the page - http://www.husqvarnaviking.com
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