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I have Pony Model 13AN77KG011 with the Engine Pulley loose and leaning over. Need some advice on replacing and installing a new one. I tried tightening the bolt at the bottom with no success.

"K&T Parts House Lawn Mower Parts and Chain Saw & Trimmer Parts" 4th manual up from bottom page 58

http://www.troybilt.com/webapp/wcs/.../Frame_&_PTO_Assembly/76903734-A/769037340004