RYOBI 18V ONE+ 184mm Mitre Saw's handle won't move

If Your RYOBI 18V ONE+ 184mm Mitre Saw Handle Won’t Move Freely 

• Do not force the handle — forcing it can damage the tool.
• The most common cause is the locking pin not fully engaged or disengaged, which obstructs movement.
• Check the locking pin position:  

* Pull the pin fully out to unlock the handle.
* Push the pin fully in to lock the handle for storage or transport.