Reverse threaded? Do you mean you have to turn the bolts clockwise to loosen them? Just not used to seeing that terminology. The only way to see would be to try and loosen them.
They are regular thread... but tight. Best to use an impact wrench to remove them...
Here is the Owners Manual in pdf, for that model.. See page 36 for blade removal. http://www.powerplaceinc.com/Eztrak.pdf
If it were left hand thread it would be noted there.
:smile:KennyV