Helpful Links Briggs & Stratton Single Cyl Throttle Insulation troy bilt instructions bri TROY BILT PRESANCE SWITCH Troy-Bilt Horse Engine Removal And Installation HORSE, PONY, JUNIOR TILLER SERIAL #’S BY MONTH/YEAR Troy Bilt Repair Manuals http://manuals.mtdproducts.com/mtd/Public.do?model_num=horse&serial_num=1&doSearch=Y