Without seeing a wiring circuit I would think it's possible to replace the push on relays with conventional relays and operate by man on/off button switches. May need a bigger enclosure mounted remote from the motor.
Good info for thr V10 at iO https://groups.io/g/emcoV10lathe
Emgee
Seems it can be done with 2xDPDT switches, 1 for fwd/rev and the 2nd for high/low speed, I would suggest supplying power to the fwd/rev switch from a DOL push button starter with NVR and an overload to suit the max FLC stated on the motor plate.
You will have to Stop the motor and allow it to come to rest before changing either of the DPDT switch positions.
Edited By Emgee on 15/08/2020 22:19:42
Edited By Emgee on 15/08/2020 22:24:13