97 225nt bobcat not stricking an arc

[troy winslow]

i was welding with it and then changed polarity and now it wont strike an arc it is a 97 bobcat 225nt any suggestions on what it might be thanks troy

[bigtow30t]

This is going to sound stupid, did you try it back the way it was

[troy winslow]

97 225nt bobcat not stricking an arc

Yes I did. I do have juice in the 120 circuit but still not getting an arc