Timing belt AJM replacement

Hello...

I've already put a lot of strain on the search.
Unfortunately, I can't find any instructions on how to replace the timing belt .
I only need the replacement part; I can handle the installation and removal of the other components myself.
Only mounting the belt proves to be difficult because it is very tight .

I would appreciate many tips and suggestions, as the car is only waiting for its new belt .

Best regards.
microtron