FWIW, I have a mix of new and old technology equipment and each has is pluses and minuses.
For a simple on-off like running a pump (or welder, generator, etc), I'm a keep it simple kinda guy. Conversely, no chance I'd trade my kx040 for an older (but way cooler in my opinion) classic but clunky ass excavator.
Anyway, if I were in your situation and budget I would build me an old school low compression industrial engine like a continental f140/162 and convert to propane. Or maybe a Ford 300 I6 again in propane. Haven't had to find parts for a continental in a while but last time I did they were easy to source and relatively cheap.
They can be built to be very reliable, last decades, and are pretty field serviceable with basic tools. Propane is a just a touch more complicated than gas, and you lose some power, but burns way cleaner and seems to be easier on the motor. Maybe that's just a placebo as oil doesn't turn black like gas engines and the exhaust odor isn't nearly as intense.
I'd take the opportunity to fab things up as an attention getter for some free advertising. I ran a 60s F100 for a shop truck for several years. Had dozens of people ask about the business because they noticed the truck.
I am assuming you're somewhat handy with engines. If not then I dont think this approach would be appropriate and finding something more modern would probably be a better fit. Last thing you want is something that isn't user friendly to you.
For a simple on-off like running a pump (or welder, generator, etc), I'm a keep it simple kinda guy. Conversely, no chance I'd trade my kx040 for an older (but way cooler in my opinion) classic but clunky ass excavator.
Anyway, if I were in your situation and budget I would build me an old school low compression industrial engine like a continental f140/162 and convert to propane. Or maybe a Ford 300 I6 again in propane. Haven't had to find parts for a continental in a while but last time I did they were easy to source and relatively cheap.
They can be built to be very reliable, last decades, and are pretty field serviceable with basic tools. Propane is a just a touch more complicated than gas, and you lose some power, but burns way cleaner and seems to be easier on the motor. Maybe that's just a placebo as oil doesn't turn black like gas engines and the exhaust odor isn't nearly as intense.
I'd take the opportunity to fab things up as an attention getter for some free advertising. I ran a 60s F100 for a shop truck for several years. Had dozens of people ask about the business because they noticed the truck.
I am assuming you're somewhat handy with engines. If not then I dont think this approach would be appropriate and finding something more modern would probably be a better fit. Last thing you want is something that isn't user friendly to you.