Small Engines (Lawn Mowers, etc.): yardman belt, frame components, mtd

Question
model 13an690g352 serial 1c010b10005 tryed to change engine to rearend belt. Large pulley on arm fell out, had spring attached, where was ths arm mounted,where does spring hook.
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Answer
 Hello Donald:

 Go to this Addy http://www.smallenginepartswarehouse.com/parts.asp and Click the Parts Look Up Block. On the Next Page, Select the OEM, MTD and Enter the Model Number. Next Double Click on you Model Mower. From this Page you can View the Breakdown of the Mower. Select the Drive, Frame Components and Wheels Listing. You will Have to Enlarge the Breakdown Twice to View it Properly. Hope this Helps. Let me know what Happens, Please. I enjoy knowing the Outcome. Thanks.

 Good Luck

 Respectfully

 John