I have an Ariens 911515 21 inch self propelled mower with a Briggs 6.75 Intek.  I got the mower tangled in some bushes yesterday, and when yanking it out the spring on the throttle came flying off.  I can't find a parts diagram anywhere.  Ariens won't post engine diagrams, and Briggs wants a serial number, which is stamped on and rusted out to the point of being illegible.  Would anyone out there have a lead on a parts diagram showing how to connect the springs or even just a picture of a working unit to help a guy out?  The mower will run currently, but only wide open and it sounds like it's trying to take off and fly.  Thanks!