HP all-in-one, broken drive belt

[Chucky]

The drive belt is broken in my HP R40 all in one printer. I need some instructions on how to open the machine so that I can replace the belt.

[Manuals]

1- There is no service manual for this POS.
2- Where do you think you're going to get the part?

Paul@justmanuals.com

[Chucky]

I can order the drive belt from www.fixyourownprinter.com for about $40, but they want another $49 for instructions on how to install.
I do not know how to open the printer to access the area necessary.
Any help will be appreciated.

[Manuals]

See #1 of my previous message.

Paul@justmanuals.com