the fuel system has a supply side (everything from tank to pump) and the pressure side (pump to engine). Often we forget to look at the supply side. I've seen a ton of mowers with dirt/grass inside the tank which plugs the pickup tube, have seen a bunch of bad boys that had trash from the tank plug up the little tee between the tanks too. And quite a few with the old "liner" fuel line which disintegrates and plugs up everything (first gen epa compatible fuel line....JUNK). So don't forget fuel restrictions pre-pump.
on some of the outlaws i had issues with the relays under the RH side control panel. Again, whoever bad boy contracts with for the wiring harnesses, needs to have their head examined. That relay center is nonserviceable on a lot of them so if one relay goes south, you have to buy an entire harness. Dumb! But it makes it less expensive for them to build mowers, so....