What routine maintenance does the Big Blue 400D require?

Check all engine fluids daily with the engine cold and on a level surface. Check the oil level before operating and add diesel fuel (never gasoline) before starting, leaving space for expansion. During the first 50 hours of operation, keep the welding load above 200 amperes. After the first 50 hours, change the oil and oil filter. The unit has an automatic shutdown system that stops the engine if oil pressure is too low or engine temperature is too high, but you should still check oil levels frequently.