Firstly lets check you got the correct switch
According to the parts book your should have Ariens part # 01545600
This is a Delta switch with 5 terminals
The terminals may have tiny numbers cast into the back of the switch
Below is the connections
and under that the wiring diagram
Both of which are a free download from the Ariens web page
Just beware that people rarely chop off plugs & insert a toggle switch because the switch itself is bad
Usually it is because other switches ( or relays ) are bad and they are too bone lazy to work through the problem .
I would suggest pitting female terminals on the PTO wires then making some short jumpers with 2 male terminals
Then you can use these to bypass the lap bar switches, relays seat switch etc
As you can see , all switches are power switches unlike normal practice to make them ground switching which reduces the number of places where you can get a short circuit to the frame blowing fuses
If you have trouble with the wiring diagram ( which would get a B- in one of my classes ) then get back & we can work through it with you