Mixer tap in kitchen hard to turn on and off

I do, because if you don't, it can rust into place and become very difficult to remove from the attachments. (I'm guessing you mean from the slicer attachment, not the mixer itself, of course it should be removed from the mixer after use)

The button doesn't move. You must push the beater up beyond th notch and turn it while pushing up.

The blade sounds like it's jammed somehow perhaps simply with some food matter.
Ensure the mixer is not plugged in then try removing the bowl, locking the mixer in the down position and pushing up hard on the blade to try and dislodge it. If it comes free and lifts up then try wiggling and rotating it normally off the mount.
Sometimes with use the attachments can become slightly warped requiring more force to lift them before rotating off the mount.
I once used my own Kitchen Aid mixer with the dough hook attachment to make a whole wheat bread dough. When I was done the hook was a bit bent from the hearty dough. There was also some flour in the mount causing it to jam. Removing the hook attachment proved difficult but not imposable.
Good luck.

You will have to turn off your water mains and strip your mixer tap. It is possible that the seal (if it is an older tap with a rubber seal) has become stuck or the threaded part that turns it has gone faulty. If it is a modern tap with ceramic seals, check the operation of the mechanism and see why the ceramic seal is not being opened.

If the bolt is the hinge pin that the head swivels on when tilting it up, it can be pushed back in when the head latch is released and the mixer head is lifted slightly.

hi first turn of your water to the tap open the taps to empty water your mixer tap con now be pushed down and twisted to come out

It appears that the seal at the base of the tap is worn or the screw collar is loose - try hand-tightening it. It may cure your problem. Plumbers tape is a white tape that helps seal water pipe joints!

Try to push up while you turn the blade. Don't be afraiid to turn hard.

If you happen to have a friendly toolmaker with a small metal lathe it should not be too difficult to modify KITCHEN AID accessories that fit on to the front powwer outlet. However Puck Stand Mixer accessories are occasionaly offered on the Web. Meat grinders are very common and original Puck pasta maker have also been seen. Get searchin'!

check the worm gear, teeth most likely broken