My DH took my brother apart to oil and clean like my Kenmores well long story short the repair man was very nice and put it back together right and said that Brother machines don't need oiling and it would be cheaper to let him clean it yearly. Cost us $50. that time. Lesson learned but not all DH's fault I asked him to do it. Maybe if your lucky from trying all that thread to get the oil out maybe some thread caught inside. Good luck. sue