I have an MTD tractor, 20hp. Model 13RL77H029. I can't find the fuse, got new battery, but power is not getting to key or starter. I have noticed this model has a lot of different company names on it depending what store you get it at. Tractor Trailer Supply sells it as a Husky I think.

MTD's website doesn't recognize that model number. In most cases you can follow the red (+) battery cable to the solenoid. The fuse is typically within 6" of that solenoid. It is an inline fuse that runs from the same post as the red battery cable.