If it is a riding mower it may have a blown fuse. They are usually located near the solenoid.
It is typically close to the selenoid. It is inline with the wiring.
If there is a blown fuse on a Sears riding lawnmower, the fuse box is located below the seat. It is not common for a riding lawnmower to blow a fuse so there could be another cause like a short in the wiring.
Whatever the going price for an automotive fuse in your area be it the cylindrical or blade type.
You may have a hot wire grounding out somewhere
The fuse for a craftsman tractor is located at the back of the ignition switch on a lead or wire,it carries a 20 amp. fuse.
I hope you mean a 190C. Look for a broken or bare wire on the left side of the machine going toward the rear.
Depending on what model mower you have, there could be several problems. But, start by checking the fuse. Most mowers have a fuse that is located near the starter solenoid.
ere are fuses on a huskee tractor
You can replace a higher rating fuse with a lower rating provided it works with the device without constantly blowing. So try the 30 amp fuse in your lawnmower and if it doesn't blow and the mower works okay, you are fine. If it blows you will have to go back to 40.
Usually a dead short in the wiring some where : check for cracks in wires ,key gone to ground, exctra exc.....
There are many different Ranch King models. But, if it is a front engine riding mower and has the reverse/forward shifter between your knees, it will have the fuse underneath the plate that the R/F shifter comes through. Generally most riding mowers have the fuse very close to the solenoid. You will find the solenoid by following the positive battery cable from the battery to the opposite end.