How do you Get ready to remove the rotary hook on a commercial embroidery machine?

The best way is to watch a training video like this on getting ready to remove the rotary hook on a commercial embroidery machine.  Whether you have a Tajima, SWF, HAPPY, Melco or Toyota embroidery machines, It's basically the same embroidery repair job.  The cost of repair calls can be overwhelming and not all embroidery technicians are the same.  The price of an embroidery repair call can vary from state to state.  You always want to ask how much will it cost? How much do you charge for a service call.  How much does that embroidery part cost?  Is this covered under my embroidery machine warranty?

What are some good tips on Taking care of my rotary hook?

The most important oiling location found on the sewing head is the rotary hook. This device is located at the forward end of the lower horizontal shaft. The hook assembly contains the bobbin case, which in turn contains and tensions the bobbin thread. The hook assembly is made of two moving parts. The inner basket contains the bobbin case and is held in a non-rotating position with a restraining finger. The outside shell contains the hook point that picks up the loop of thread and forms the lock stitch. The rotary hook should be oiled at least once every eight hours. If the hook is an E-hook (eccentric hook) it should be oiled every two to three hours.