Selling some good parts off a blown model 84232-0121-E8 141cc, 6.5hp Briggs & Stratton R Tek 2 stroke snowthrower engine (build date 08/08), which, I assume, came off a newer model Toro single stage snowthrower.. Joe: I have a Sears Roto-Spader (tiller) Model No.785-291040, with a Briggs & Stratton 4 Hp power reverse engine. I am hoping to find someone with an owner's manual since Sears does not carry a manual or parts since 1997..