Many of us on this forum rarely takemachines in. We are likely to fix oour own. Yes , like Janey said, the tensioner is missing parts. but on the 15 the tensioner igoes onto the face plate. So with a bit of lulck you could find one available with ount. It also has RAF decclas. Use seing machine oil on every place that should move. That includes the teradle parts too. Take the belt off to llube teh head adn base serparpately then preacise treadeling without thread. or you 'll go crazy rethreading teh needle.when the head spins backwards.
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