Hydrapower shear

[Heavymetalmfg]

I've recently purchased a Hydrapower SE-1210 sheet metal shear. Sometime in it's life, someone re-wired it to work other than the way it was intended. I assume a switch went out and they bypassed it instead of replacing it.
Does anyone have an owners manual with wiring schematics that can be copied and sent, or one someone is willing to sell.

Thank you in advance,

Gary
Heavy Metal Mfg