Is the stitch selector set to a straight stitch or is it possibily in another stitch pattern but with the width turned down to zero?
If machine is set on a straight stitch but is giving varying stitch length for no reason then it could be that the feed dogs are not functioning correctly, could be out of time with the needle or very worn. Or are you pulling the fabric through rather than letting it feed through. Also check the pressure being delivered by the foot pressure if the machine has a variable adjustment for this. It may have just been turned down for very heavy fabric feeding and needs to be turned up to normal setting again.
Feed dogs can wear - replacement parts may be available. Just remember to search under either Janome or New Home as I believe New Home was bought out by Janome some years ago. Certainly New Home was a common brand in UK in the 80's.
You might find parts on www.sewingpartsonline.com or http://www.sewingparts.co.uk/
Answers & Comments
Is the stitch selector set to a straight stitch or is it possibily in another stitch pattern but with the width turned down to zero?
If machine is set on a straight stitch but is giving varying stitch length for no reason then it could be that the feed dogs are not functioning correctly, could be out of time with the needle or very worn. Or are you pulling the fabric through rather than letting it feed through. Also check the pressure being delivered by the foot pressure if the machine has a variable adjustment for this. It may have just been turned down for very heavy fabric feeding and needs to be turned up to normal setting again.
Feed dogs can wear - replacement parts may be available. Just remember to search under either Janome or New Home as I believe New Home was bought out by Janome some years ago. Certainly New Home was a common brand in UK in the 80's.
You might find parts on www.sewingpartsonline.com or http://www.sewingparts.co.uk/
I hope that this helps you out.