I just purchased a wood chipper with a Deere 4045T engine. Gut I bought from says it was ran out of oil and was seized. O poor a new battery in it and it fired right up. No smoke at all and has 40 psi of oil pressure at 800 rpm. I notice a little pursue out odd exhaust and some smoke. What is normal for oil pressure and crankcase pressure on these?
40psi is normal at idle. Anything less than that I'd be concerned with it. How many hrs are on the engine? Have you changed the oil and or cut open the oil filter to see if it has any material in it?