I changed the hydraculic filter and oil. Now the mower will not go forward or reverse. The pump pulleys are turning. Before doing this everything was working. Could I have air in the lines? If so, how do I bleed the lines?
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If, the machine has been sitting, take a hair dryer and heat where the reverse lever is. Try this, it worked on mine. If, that does not work, try cleaning and oiling your machine according to your manual.
This can be caused by a few things. Check the stitch setting near zero can cause this. Next check to make sure it is on straight stitch. If that doesn't work the reverse mechanism may need oiled. If this is a computerized machine you may need a repair shop to do it. You do not want oil on the electronic boards.
That warning is for the oil pressure- it's missing. Check the pipe connecting the tank to the oil pump and the cartridge filter. If they are free then the pump and the engine will have to be dismantled to identify what went wrong.
MOdel 6430 has the stitch length and buttonhole selector on the same knob. It is the one on the bottom right side of the machine. I believe you may have selected the buttonhole by pulling out on the large round knob. You need to turn the knob back to 0 zero and push in. This should return the machine to normal mode.Adjust your stitch length to 3 and try it. The reverse knob in the center should also stick out so that it becomes operational again. sewman7
The reverse button works by hitting it twice in succession to make it stay on (it lights up), and you turn it off my hitting it once again. If you just want to reverse for a little bit, you hold it down while you sew, then let go. Is the button lit all the time? Having said that, it sounds like Nannayoyo needs to take her machine to a service centre - the electronics behind the button panel might need replacing. Is it possible the button is stuck in? Maybe phone a Husqvarna service person - not a sales person - and ask for advice. Everyone - are your machines new? If yes, you need to go back to the sales centre straight away and get it fixed or replaced while you wait. If these are problems that have just appeared when your machine used to work perfectly, probably the best solution is to take it for a service. It might just be a speck of dust has settled on the electronics behind the panel and is causing unpredictable behaviour.
I too just aquired a husqvarna viking 6030 that was stuck in straight-stitch reverse. No forward, no zig zag, no button hole, no cam stitches. I also suspected a broken spring, since the reverse button was slack and had no resistance. But after inspecting every moving part, I realized it was just stuck from many years of non-use. I finally got it free today! I had used some Tri-Flow oil and applied it sparingly to all moving points (but not belts or motor). I exercised all the buttons and like another poster (either here or elsewhere, not sure) I used my hair dryer to apply heat to the inside of the machine through the cam slot. After you remove the white cover on back of machine that holds the two spool spindles, you will see a formed aluminum part just behind the reverse dial that has a rounded-pointed protrusion which sort of looks like a fat flat head screwdriver. It is supposed to travel in an up-down motion when reverse button is pressed. I used a flat head driver to coax its movement, and once it began moving, I continued with heat and drops of oil. Good luck.