Question about Juki MO-644D Mechanical Sewing Machine
Last time I used machine it worked fine. This time the motor can not turn it over and turning by hand it is harder than it normally is.
Well, you might just need a good oiling. Make sure the machine is not threaded and there are no thread snarls where the loopers interact. It also pays to insert new needles and observe the loopers and needles interact. they should come withn .01-.5mm of touching eachother; there should be no hard positive contact between loopers and needles. So, if its tight to turn over by had, this is usually a cam or bushing that need oiling, or thread that got sucked into the machine and is binding the thing up. What I would do is remove the covers, slip the motor belt off, turn over by hand. If it frees up, the bind is in the motor, if its still tight, then id look for thread, and oil the machine with a light weight oil (sew mach oil, tri-flow... NOT 3in1 oil!). If you have a keen eye, you can wiggle the handwheel and try to observe what parts are moving slightly, and which are not. using that method you may be able to track the bind to a section of the machine or even a specific shaft/cam/component of the machine. Another common bind point in sergers is where the knives mate. Move the top knife to its idle (non cuttin) position and see if this relieves the bind.
Posted on Jun 27, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 09, 2012 | Juki MO-644D Mechanical Sewing Machine
Sep 08, 2012 | Juki Sewing Machines
Jun 14, 2010 | Juki MO-655 Mechanical Sewing Machine
Feb 19, 2010 | Juki MO-734DE Mechanical Sewing Machine
Jan 15, 2010 | Juki Sewing Machines
Feb 23, 2009 | Juki MO-644D Mechanical Sewing Machine
Nov 10, 2008 | Juki MO-644D Mechanical Sewing Machine
654 people viewed this question
Usually answered in minutes!