looks like a std 5 pin 3 position switch to me
Stens 430-136
Check yours against the new one to make sure the wires are in the correct position in the plug before you plug it in.
On the underside of the plug are tiny letters
S = Start Tan wire starter solenoid via PTO & Brake
M = Magneto colour not listed, might be dark blue.
G = Ground Black wire
B = Battery Red wire power feed to swtch
L = Lights Orange wire ( also running power )
Off = M + G
On = B + L
Start = B + L + S
Double check the magneto wire never gets voltage or you will fry the control chip.
To do this remove the blower housing and hook up a test lamp between the magneto kill wire and ground.
Sit in the seat turn the key to all positions, PTO on PTO off , brake on brake off & sitting in the seat out of seat.