There should be installation instructions -- with your new microwave
But I can explain some of details to remove the old microwave
There are bolts that hold front of microwave up -- cabinet above unit
Unplug microwave. When the bolts are removed -- the front will drop down
A bracket holds back -- so you need to raise back and pull forward
This is not a one person job -- two people is usually best.. Remove
Then remove bracket that mounts on wall -- new one -- new bracket
Mount the new bracket per your install instructions -- measure down & mount
There should be a template -- place on bottom of cabinet -- drill new holes
Protect your eyes when drilling overhead -- Install and bolt up new unit
http://www.siemens-home.com/pdf/hf36...stallation.pdf
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