How do I remove the lower spray arm on a GE dishwasher?

Dishwasher Repair
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1

How do I take out and replace the lower spray arm of my dishwasher. A GE gsd5800g01bb.

2

Here are your parts
Replacement parts for GE GSD5800G01BB | AppliancePartsPros.com

Here is a good site, check out #16
http://www.applianceaid.com/ge-dish.html