Larry, pardon, I assumed pro-rata on the revs, whether that be by pole # numbers or gearing up a 2 pole alternator. The plate says 120-208v. NZ 2010 REGS = 230v±6% 1Ø, 400v±6% 3Ø poco supply as Mike says, so some volts tweaking will be necessary for ideal service. Most stuff would still run at 208/380 and 60hz as a temporary emergency supply, induction motors a bit fast, lights a bit dim[?], Amps a bit higher... breakers replaced with knitting needles! mad - only joking! A dairy shed may well need 3Ø for the vac-pumps etc..

The biggest hurdle will prob'ly be that oiler lump. If the external condition is reflected inside, no amount of tweaking will help. Only one way to find out, clean filters, clean oil, fuel-up and turn her over.... aspirin

Wood work but can't!