JD X748 Sucking Fuel Like Candy

[JDTank]

Everything will clear up when the mowers get broke in.
Until then I WOULD mow at a slightly reduced engine speed.
Some operator manuals tell you to not run at full speed until the break-in period is over.

Break it in, change the oil and report back.

Just to add to that.

DO NOT change the oil before 50 hours in these Yanmar diesels. The oil in them from the factory is designed specifically for freshly built diesel engines. After 50 hours, do whatever you wish, but do not change it early. The old days of worrying about shavings in new engines is long past. Machining today is fine tuned, precise, and extremely accurate, so no need to worry.