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All, I wanted to follow up on my original post. It ended up being a small (1/4) inch Allen plug maybe used during engine manufacture. It is near the oil pressure switch and evidentially never tightened. It was barely in and getting ready to blow out completely (maybe next time the engine...

I have a new JD Z930r that has 7.5 hours on it. I noticed an oil leak under the drain plug of the 25.5 hp Kawasaki engine after the first mow at about 3 hours. At first I blamed it on the cheap plastic oil drain valve. However after changing the plastic valve to the Kawasaki drain hose with...

I have a 21 Z930r that I bought in January. I started mowing with it 3 weeks ago. I changed the oil for the first time at 6 hours and it looks almost exactly like your pictures - a brown soup. I guess it’s ‘break in oil’. I replaced it with Mobil1 10W-30 EP and it looks clean on the dipstick...