The number 1 cylinder has some oil consuming issue runs for about 1.5 hours before consuming enough oil to foul the plug and cause the oil not to read on the dipstick. The enhing and mower have less than 700 hrs and I just spent about 1-K with the dealer to repair everything without completely solving the problem. It was running poorly and throwing a code they fixed that code and another appeared and so on it went. They say I could possibly need... New Rings New valve guides Possibly a piston And cylinderr itself may need work (whatever that means) They say it would be cheaper to just buy a new engine $2-K... Wish they would have told me that $1,000 ago. This all started with over fill of oil that caused a rod to bend. We replaced both. The engine shows no sign of leaking, it is all being burned but not smoking too much. So masters of the mechanical realm whats your call, fix or replace? Replace with same engine or smaller or different engine.