Description Jack Knee Lifter Crank 10112027 Jack Knee Lifter Crank for JK-5550, A4, A4S, A5 and F5 machines. Part number 10112027 Trojan Sewing Machines can service repair maintain your Jack Sewing Machines. We Sell & Distribute the Jack F4 and hold stock of both Generic & 100% Genuine Manufacturer’s Original Replacement Parts. So give us a call and get your parts tomorrow. This is just a selection of our most popular parts. So, if you cannot see your part or are unsure what you need, take a look in the Parts List or please call and we’ll be delighted to help.
