Question about Bernina Sewing Machines
Are any special tools needed to access the belt, to reassemble or to retension it? Is the belt a standard industrial part that can be obtained from a normal commercial supplier?
Posted by Anonymous on
Adjustment: The stepped pulley support/frame has two 5mm fixing screws on the lower end of the frame and a plastic screw on the upper frame end. Early models had a third screw on the upper side of the frame. By loosening the screws slightly, push the stepped pulley and frame frame toward the loosened side and then let go,...tighten the screws. The frame tension spring is generally sufficient to adjust the belt tension. However, you may want to add a little tension but do not load too tight as you can cause stress on the motor or damage the front motor shaft bearing.
If a belt is needed, you can find them from local companies dealing in bearings, pulleys and drive components, i.e. Kaman Industrial etc. If memory serves me correctly the belt type is MXL, 250mm length, 5mm wide. The outer side of the belt has information to tell you the type. If you want to find one online go to www.sdp-si.com.
Posted on Jul 08, 2015
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Posted on Jan 02, 2017
Carole... I recommend taking the overlocker in to have this done. If it's not done properly you could break a looper or worse with it being out of time. Better to have the belt replace and while you are at it have it cleaned, lubed and adjusted. ;)
Posted on Sep 05, 2012
What is the model number of your machine? But the needles are likely fastened with a small screw. Do you have a small screwdriver? That will likely do the job.
When you take the old needle out, watch which way the flat part of the needle is inserted. That makes it easier to insert the new needle. A mirrow may help you. (But rememeber it is reversed in the mirror!)
That machine looks to be a good quality machine from what I can find.
Does you machine have curved needles? If so, it may use a small nut to hold the needles.
Hope that helps.
Posted on Oct 04, 2014
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