Thompson Mini Walker loose stitches

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   Good evening, 
I've been having issues recently with my PW-500, the machine has worked perfectly for months but is now showing loose top stitches every few stitches, with nice stitches in between. I've replaced several needles and it seems to happen using size 16, 17 and 20 needles with vx69 bonded nylon thread. The thread is not bunching or gathering at the needle and I don't see or feel any burrs the bobbin assembly or needle plate. Any help is greatly appreciated. 

Thank you!

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steelguitars Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Member Joined: 21 August 2018 Location: Houston Status: Offline Points: 5	Post Options Post Reply Quote steelguitars Report Post Thanks(0) Quote Reply Topic: Thompson Mini Walker loose stitches Posted: 22 August 2018 at 12:04am
	Good evening, I've been having issues recently with my PW-500, the machine has worked perfectly for months but is now showing loose top stitches every few stitches, with nice stitches in between. I've replaced several needles and it seems to happen using size 16, 17 and 20 needles with vx69 bonded nylon thread. The thread is not bunching or gathering at the needle and I don't see or feel any burrs the bobbin assembly or needle plate. Any help is greatly appreciated. Thank you!

MattGrant Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Sailrite Employee - Expert Joined: 21 April 2005 Location: United States Status: Offline Points: 3007	Post Options Post Reply Quote MattGrant Report Post Thanks(0) Quote Reply Posted: 22 August 2018 at 8:17am
	Start with the simple stuff. Check to see if the center presser foot is pushed all the way up on the shaft. To do so loosen the screw, push it up and then tighten the screw. Next check to make sure the center foot is coming up during operation of the machine. Basically what should happen is that the outer foot should come up about 3mm at its highest point and then the center foot about 2mm in an alternating fashion as you run the machine. Do this with the feet down. Also check the cap spring that is just under the needle plate on the retaining ring. If is has any burrs replace it. Good luck!
	Best Regards, Matt Grant Sailrite

Tejas Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 14 February 2011 Location: Austin, TX Status: Offline Points: 206	Post Options Post Reply Quote Tejas Report Post Thanks(0) Quote Reply Posted: 22 August 2018 at 3:37pm
	Look for the attachment sewing-troubleshooting-chart.pdf that includes a section on loose stitches in the leatherworker.net thread below. The link to the pdf is my second post. http://leatherworker.net/forum/topic/67749-can-ya-help-a-girl-out/
	Beneteau First 36.7 Juki LU-1508N Bernina 217N with CAM Reader Singer 99 with hand crank