Pfaff Hobbylock 788 serger feed dogs run backwards

return it to the vendor before warranty expires

Free manual:

http://www.pfaff.com/SiteMedia/PFAFF/Products/Machines/Support-manuals/Hobbylock-_787_788-manual-EN.PDF


http://www.pfaff.com/SiteMedia/PFAFF/Products/Machines/Support-manuals/Hobbylock-_787_788-manual-EN.PDF

Hello, Mary -

I am having no luck in finding a replacement feed dog for your specific model of Pfaff sewing machine. I suspect a replacement feed dog is available your model and other Pfaff models.

If you can locate an authorized Pfaff sewing machine repair business in your area, someone there can probably tell you what the right part number is for the feed dog and may be able to sell you one.

This is the link to the Pfaff Machine Support web page:
http://www.pfaff.com/Support-and-Updates/Support

Best wishes.

First, verify that the stitch length is set high enough that the feed dogs should be pulling the fabric to create a stitch.

If you have not recently oiled the machine, the feed dog mechanism may be stuck due to old oil that has solidified. Pick up some liquid Tri-Flow Synthetic Lube. While gently rocking the handwheel, apply a couple drops everywhere that metal rubs against metal. Do NOT oil rubber, leather, or synthetic parts!!! Don't forget to hit the spots under the sewing surface, ie the feed dogs, bobbin area, etc. Also, move the levers and selectors and hit those with a couple drops of oil. If things are still a bit sluggish, you can apply hot air from a handheld hairdryer at the interior of the machine. The heat will help loosen things.

P.S.--I picked up a frozen Pfaff 260 at the thrift store for $25. Used the above method to get things loose and now it sews beautifully!!!

...

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Two different YouTube videos.
https://www.youtube.com/watch?v=R6FIDG9xEv4

PFAFF HOBBYLOCK 788 SERGER

Hi,
I have the same problem, thee needle holder shaft swirls from left to right, is very loose. Maybe there is a screw missing, but which one? Please look at the pictures.
Ninchenx

take the serger back and get another one,
from one seamstress to another

I can't find a manual for this model, however there is a general hobbylock book http://sewingonline.co.uk/library/know-your-pfaff-hobbylock.html which would certainly be a good start.

You may find best source is to contact Pfaff locally and source it from them direct.

You could also try www.diplodocs.com, I can't see this manual but if you go through similar model numbers manuals you may see one very similar. Overlockers/Sergers are very similar in many ways so once you've mastered one, the next one is pretty straight forward. Four tension knobs, 2 needles and 2 loopers is the norm - to get a three thread stitch you just don't thread one of the needles. Tension adjustments alter the stitch formation, and you should have a stitch length knob on the right side of the machine along with a flywheel and if it has it, differential feed (which controls the feed dogs so you can stretch, or compress the fabric as it goes under the foot).

There are some good general how to use a serger books in the marketplace too which should help. Threading up, many machines have a diagram inside the front flap, colour coded dots on the knobs, eyelets and loopers. And oiling points are often marked on this diagram too. But basically oil the two loopers where they slide/move on another metal part. Some good info here too http://sewing.about.com/od/sergersoverlock/Sergers_Overlock_Sewing_Machines.htm

Hope this assists you a little.

hi! there if your feed dog does not move the fabric forward or backward,if this is so try to run machine w/o the fabric check if feed dog move on cycle,the teeth should be moving upward and downward rotation pushing action on your fabric,the teeth should come out to the plate slot of feed dog.if not adjust upward, and adjust also the presser foot of needle.if your feed dog is not moving when machine running,thre is a mechanical disengage or loosen in shuttle assymble and feeder dog mechanism they link together ubder the machine,as the shuttle move on one stroke the feeder also move also with the needle.Chesk the adjustment and link mechanism.in addition to this try to clean feed dogs by brush chips thread and fabrics sometimes stored on mechanism of feed dogs and shuttle.

Does it still make noise? Maybe it needs a new belt or just some oil?