How to clean, oil, maintain sewing machine {Juki DDL-8700}

In this video I show you how to clean, oil, thread and maintain a sewing machine. I also explain the parts on the machine as I go along  The one I am using is a juki , I talk about tension issues you can come across and how to correct the problem,  I  also talk about filling a spool and sometimes there are filling issues if the spool is just slightly too big .You can use the methods I use on all machines relating to tension issues its the same principle really , it really is quite easy when you know how.