Reynaers Patio Door Handle Issue

[petewood]

Hello.

 

I have Reynaers patio doors at my property and the handle for the inside door has come off. I can place it back on but it's loose and falls off. Curiously, there is a threaded bolt in the end of the handle spindle place where the handle attaches to the door. The handle has a thread inside. I'm at a loss as to how I thread the bolt into the handle given the spindle is square and means I cannot rotate the handle onto the thread.

 

Noob question I am sure!  Any help greatly appreciated.

[PeterW]

Remove the two Allen bolts and the handle comes off. Re-fix the handle - doesn’t the cover have a hole in the size of the round handle cross section and the cover rotates ..?

[ProDave]

Lets see the other side of the handle, a view of the handle on the door for example?

 

Is there a "cap" you can remove to give access to a nut to tighten it on?

[petewood]

Apologies for the non-reply to these comments.  I'd been waiting for an email to notify me of replies and only noticed today that isn't on by default ?‍♂️

 

Thank you both for your replies.  It was actually a bit of a combination of the 2.  I removed the two Allen bolts and the silver base came off on both sides.  A similar Allen bolt is threaded through from the other side into the handle on the inside which I tightened to solve the issue.  Thank you for your time.