These are very well built machines. I will always suggest having a trained professional repair technician work on your machine. Parts will not be available to you even if you had the proper tools and repair manuals. There are mechanical and electrical hazards when making your own machine repairs.
Cheers,
Embroidery Services
San Diego, CA
There are several screws that hold the front in place from underneath. I think there are both small phillips screws and larger hex head screws. You do not need to remove the screws holding the motor! Once you have removed them, you pull or pry the large knob off and slide the right side of the front up. You will see that the oval shaped hole around the stem where the knob attached extends downward to allow you to move the cover upwards. The left side slides either right or upwards. But once you take the front cover off, you will have to figure out how to align the three large dials, to get them back together correctly. From what I recall, you do not get much access to the mechanism from the front.
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SOURCE: Viking Husqvarna model 6440 gets stuck in reverse
There are numerous things that can cause this, some very simple, some less so.
1. Fortunatly, the most common one is also the simplest to cure. When you turn the selector (upper left) knob between stitches, one of the things that is happening when you feel the resistance is that it is lifting the followers off the camstack so that it can move to another stitch. When the camstack is normally doing its job, lifting the feed cam follower is what puts the mechanism in reverse. So, while the selector is between stitches, the machine is temporarily in reverse. Also, the dots where the dial is to be placed to change the camstacks is between stitches, so if the dial is on these dots or anywhere else except snapped into a stitch, you will get nothing but reverse.
2. The buttonhole mechanism is stuck in the reverse portion of the buttonhole. Usually if this is the case, the needle position will also be stuck on the left side, and the width control /buttonhole control will not function correctly. Usually you can correct this yourself and I'll explain how in a bit. It is usually caused by lack of use of the buttonhole mechanism.
3. Either the arm that connects the camstack to the stitch length block or the block itself is stuck. Both these parts are spring loadedto bring them in the forward position, so long periods of rest are a contributing factor.
All of these causes except for the first one are because of the mechanism not being exercised frequently enough. These older Vikings do not like to sit still very longYou should fully exercise all the knobs at every sitting.
Ok, try this fix. And this is to free up the mechanisms that are probaby stuck from non use and old oil and grime buildup. Take your seamformer (cam) out of the back. Find a hairdryer and blow some heat in there for awhile. This will soften up any hard oil or grease that may be causing the mechanisms to stick. Then if you can it would be best to have what is called TRI-FLOW oil (the BEST) and spray or drop quite a bit into there covering the mechanisms and let it soak in. You might try a good sewing machine oil soaking or WD-40 in small amounts. Little by little test your knobs, slowly working whatever is stuck lose. Never force the issue. Small amounts of movement little by little will eventually free it up.
Good luck. Hope this helps. If this does not help you may have to take it to a technician and hopefully you won't find out that your take up slide isn't broken which is a major job.
SOURCE: Threading a husqvarna viking 3610
This should be your machine:
http://www.sewingmanuals.com/Viking_Pics/Viking_3610i1.jpg
Sewingmanuals.com shows that they have this downloadable in Adobe PDF format here:
http://www.sewingmanuals.com/Sewing_Machine_Manuals/Viking.htm
#37 in the list as of me posting this. You can get a CD version too but you'll just pay more and wait longer for the same thing. Once you have it print the manual (preferably both sides to keep it small) ang you'll have it. You can also peruse eBay to see if anyone is selling a manual but I doubt that will yield regular results. The machine looks to be pretty basic and standard but it's best you have the manual to get the most out of the machine. Also be sure to check the cleaning and lubrication section and go through the process so that the machine is in top working order before you put it into regular use - saves a lot of headaches.
SOURCE: Husqvarna Viking Sewing Machine 6020 sews in reverse
Take it in to be serviced by authorized Viking repairperson. I understand that for ~ $175 they will disassemble your machine, remove all the hardened grease from gears, calibrate the gears & set tension correctly, etc. A small cost considering these older mechanical sewing machines are GEMS and will provide you another 60 years of sewing bliss if taken care of properly.
SOURCE: where can i find a new instruction manual for a
Cut and paste this link into your browser and it will take you to a free copy of the Rose manual.
http://s2.vsmgroup.com/VSM/Husqvarna%20Viking/HVManual.nsf/1fd5659e6f37141041256697003e64c0/8569fb0aa78ab071852575ed00723d7a?OpenDocument
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