Where to get metal arm for I'cemaker for he profile side by side fridge

There are three ways.
1. Shut water off to the fridge via plumbing valve.
2. Lift arm on ice maker or use on/off switch depending on ice maker model.
3. Unplug ice maker wiring harness. It won't be able to call for water.
It depends on why you want the water off. A make and model of the fridge would help so I can give you a more specific answer.

Make sure the wire arm is in the down position. If it is in the up position this signals the icemaker that the bin is full and icemaker shutsn off. Hope this helps.

You cannot - this is a design issue that really cannot be fixed since the arm that senses the ice level cannot get caught up in the bucket or it would break every time you opened the freezer. Any fridge brand of this type has the same issue.

it;s probably not going through the defrost cycle or its getting stuck in defrost .. on the back of frig the is a metal cover plate . in side you will find the main board . replace it . it runs the compressor and defrost and controls tempt . this is a very common problem . the new boards are better . and they cost a litle more . mm hope this helped / feed back pls .

Pull the ice bin out then reinsert it into the slots until it locks in place.
There is a metal arm under the ice bin. It must go inside the yoke in the rear wall of the freezer.

The ice cube bin has become dislodged from the locked position.
Pull the bin out and re-insert the bin into the frame locks.
Look underneath the bin when you push it back in. There is a yoke device in the back wall of the freezer and a metal arm on the ice bin. Make sure the metal arm goes inside the yoke.
Make sure the ice bin feels locked in place.

Since you are seeing the arm up at times, ice maker is ok. Look for problem with water solenoid valve on back bottom of unit

Your defrost has stopped. Either the defrost heater, bi-metal or the control board has failed.

if it has a feeler arm it will look like a wire the size of a metal coat hanger it is on the right side of the icemaker if it is up pull it down to start making ice

check your owners manual for a water filter, make sure trip arm isn't stuck closed and not letting water in to freeze.