The top screen is a bit loose, how do i tighten it

Hi there, it sounds like both the top and bottom tensions need to be tightened. Start with your bobbin. Tighten it gradually, a quarter to a half turn of the screw at a time. Sew a bit after each adjustment. When it starts to pull the top thread down, move on to the top thread and adjust it until you are happy with the look of the stitch...note, you may have to adjust your bobbin a tiny bit more, but not too much, the least amount of tension necessary on the bottom is always best. I hope this helps, have a great day!

If it is your top thread looping then the top thread is too loose and you need to tighten the top tension. Usually the higher the number the tighter the thread. If it is the lower thread looping to the top then try loosening the top thread first by lowering your tension number. If this doesnt work then depending on whether or not you have a separate bobbin case, which has a small flat screw 3-4mm diameter which can be turned by the flat of your thumbclockwise to tighten, if looping and anticlockwise to losen. Normally only the top tenison needs to be fiddled with. If you have to change the lower(bobbin) then one way of checking a good tension is to let the bobbin drop whilst holding the thread and it should drop comfortably with a small pull on the thread a little bit like operting a yoyo:)

if the bobbin stitch is loose tighten the top thread tension one number at a time & sew alittle bit & if it's still loose tighten it one more number till you get the correct stitch

Without more info, I can't tell if you mean you have a loose head-set (that's the vertical tube that holds the bearings that turn when you steer), or if you have a mountain bike with springy front forks and the springy part is loose. If it's the springy part, you'll probably have to replace the whole front fork. If's it just a loose headset, you can tighten it pretty easily. Look at the top of the headset while you turn the handlebars back and forth (as if steering). Looking at the top of the headset you will see (from bottom to top) a knurled ring, a washer, and a large nut. The nut is a lock-not which is isolated from the knurled ring by the washer. The washer has a tab on the inside that prevents it from rotating. Tighten up the knurled ring by hand (you might have to lift up on the handlebars a bit to take the pressure off of it). Don't over-tighten the knurled ring or you won't be able to steer. Then tighten the lock nut with a wrench. Good luck

the case the bobbin goes into has a little spring on its side .. the spring has one or two screws. one screw adjusts tension on the spring .. the bobbin thread goes under that spring when it is properly threaded .. if the screw is loose or missing then replace the screw or tighten it a little so that thread pulled thru the bobbin case spring has a bit of drag .. if its too loose then you can tighten the screw a bit more ... if you tighten it too much then it will pull the top thread thru to the bottom .. if your adjustment screw or spring is missing then you can replace the bobbin holder .. the new one should have the spring in place and be properly tightened .. . often the adjustment screw is just loose or the thread is not positioned correctly in the bobbin case slot. .

Try loosing up the nuts a bit, there may need to be some play in the nuts for the lid to open and close properly.

The timing is set at the factory. If the threads are not hooking together, then perhaps try one of three things.

1. remove the thread, and run the machine at full speed for three minutes or more. This warms up the hardware, loosens gelled up oil, and get's all the parts in allignment.

2. (and 3.) Check the thread tentions. On the top thread, it will be a dial with numbers, over a spring and two plates that the thread runs through. On the bottom, it's a tiny screw on the side of the casing that the bobbin sits inside.

If the machine sews loose threads, then tighten these, a bit at at time, and if the machine jams up with a knot of thread at the needle, then loosen these. I believe that if the sewn threads are loose at the top, the bobbin tention neeeds tightening, and if the sewn threads on the bottom are loose, then the top tention dial needs tightening.

Cheers.

Lay the mixer on a towel and look up inside the base to the top of the neck. There's set screw up there. Tighten. If that doesn't work your shaft may be too worn and needs to be replaced.

you can replace the bush on the bottom of the gear stick accessable through the top of gearbox it may tighten it up a bit

a the base of the screen you may see some scews that cover access panels, open them up and you can tighten the little nut that tensions the hinge. I had a laptop that was shaky and I tightened the hinges and it was OK after that.