JDM inverter welder Generator/Shindaiwa EGW185M-IST

This generator is imported from Japan and not meant to sold outside of Japan
So there’s a frequency switch to change output frequency 60/50HZ
Spec
Welder :
rated 170A 26.8vDC, 75v for no load
Power factor:50%
Amp range:45~185A
Generator:
rated 100VAC 50/60HZ 2500w X2 or
200VAC 50/60HZ 5000w
this particular unit has sub inverter failure so it can only output 100V 2500w 50/60HZ
Engine Yamaha MZ360 12ish HP @4000rpm
Used in this unit is stuck at 3600rpm
Weight:99KG
Fuel capacity:15L