We may have found other answers which could help you.
Click here for Model Problem Fixed
my bobbin thread is not picking up after a needle break on my riccar 829 cn?
Threading a Riccar 9400 sewing machine?
How can I fix my Riccar 888 sewing machine?
How can I fix my Riccar Super-Stretch model 570 sewing machine?
Threading diagram 9600?
Replace motor on Riccar 906E?