Huskylock 910 starts to serge normal and then begins to take extra thread and make a mess. what can I do to fix this?

SOURCE: husqvarna huskylock 910 wont form chain while sewing

Are you sure the tension is right? You might need to push the thread hard against the track after leaving spool going into the machine (until it clicks). I had that problem also. Hope that helps.

SOURCE: HUSKYLOCK 901

Sometimes the thread tension needs to be cleaned out. I put a smal screw driver in where the silver tension guides are (between the dials) and open them up and wiggle them a little bit.
If the machine is cutting theads and or not catching threads on the back the timing may need to be adjusted.

What type of stitch are you trying to do?

SOURCE: Where might I find huskylock 910 instruction manual?

Your local Husqvarna dealer can order a replacement manual for you and may even be willing to teach you to use it for a nominal fee.

SOURCE: I need to know how to thread my Viking Husqvarna

You have a great machine. These are hard to thread but once you have mastered it, you'll have many years of great use. The owner's manual has instructions, as well as the inside door of the machine (the door that folds down on the front bottom part of the machine. However, you might want to follow-up with your local authorized Husqvarna Viking dealer. Most are eager to help you even if you didn't purchase the machine from them. Some even have classes on using the serger. You might try several stores in the area. Suggest that it be serviced and cleaned by an authorized Husqvarna Viking Dealer. You can find the nearest dealer by click on the "Dealer" link at http://www.husqvarnaviking.com

Good luck.

One fundamental tip is to follow the color coding, start with green, then blue/navy, then red, and finally yellow. The sequence is work inside to outside with threading (green - blue - red - yellow). Do not try different order--especially with green and blue -- since the threads build on each other. I have switched yellow and red with no impact but green then blue is always the proper order.

Good luck.

SOURCE: Huskylock 910

Here is a video - http://www.husqvarnaviking.com/us/421.htm