Engine cuts out at max RPM
The engine runs great when just driving, even full throttle in high gear never has a problem. It's only when I am using a PTO device (snowblower) at max RPM... about every 30 seconds, it acts like the motor completely dies, but only for about 1-2 seconds.... then it revs back up to normal and everything is fine. With the blower going and the hand throttle at max, it's running around 3,600RPM.
I have replaced the fuel filter, used brand new fuel, and even tried adding an additive for a tank to see if that would help. No difference.
Any other ideas??