I'm repowering my Ariens 1742 EZR mower, replacing the original single cyl, B&S 17HP engine (p/n 311777-0154 E1) w/ a twin cyl B&S 22HP (p/n 445777-0114 E1) engine from a lawn tractor. The original engine had a tri-circuit alternator (p/n 696497) and the replacement has a 10-16 amp regulated...