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!