For a complete list of parts, tools and a printable PDF of the steps, please see my blog post on the repair:
https://easyhowtotube.blogspot.com/2017/08/how-to-fix-leaking-moen-1225-series.html
An easy to follow video detailing step by step how to repair a leaking Moen 1225 series kitchen faucet. All steps of the procedure are shown including removal, cartridge replacement and reassembly. The video also includes information about required parts.
By following the steps in this video, with minimal tools (just a screwdriver, hex wrench and a pair of channel-lock pliers) you can save hundreds of dollars in plumbing fees by completing the repair yourself.