Electric Starter Motor Assembly Fits Briggs & Stratton 497596 & 394808, Magnum Oregon OR 33-771, Mega Fire Stens 435-307, Rotary 26-9797, 14 HP, 16 HP, 18 HP B&S 422700-422799 Briggs & Stratton 497596 Briggs & Stratton 427700 Magnum 33-771 Mega-Fire 435-307 Twin cylinder engines