The engine should always be run at full throttle.
This is best for both the engine and the hydro pump.
Fastest way to kill a hydro is to run the engine at a slow speed and the hydro flat out
#3
BlazNT
This is the answer you will hear from everyone. First, the engine is designed to run a wide open throttle. Second, the blades of the mower are designed to run at wide open throttle. Third, the hydros are designed to run at wide open throttle. Read your owners manual it will say the same thing.
