sold the threading machine and sold the heads - the buyers had the option of asking for the manual but none did, so I have a photocopy of the manual left - it has instructions, schematics, exploded parts lists, etc - if you would like it, go to the web address below, find my real email address and get in touch with me - I've learned over the years that that which is given away for free is often treated as worthless, so I'll expect a few $ for shipping