Ok guys I need some help with this one. I have 4 walker 26HP mowers. My newest one has 936 hours on it. It will run for 15 min fine then start sputtering and surging. Originally it was sending code 31 and 32. I replaced the O2 senser, the fuel filter, ran extra ground from battery to muffler, and swapped out fuel pumps. Today same thing happened after 15 min started surging, i dis engaged the blades and surging continued, sputtering. It would sit for a while and be fine, but only for...
Walker code 32
Walker code 32