I am a new YM2000 owner that is still learning about the tractor. What is the proper RPM range to run engine while mowing. The guy I bought the tractor from says Yanmars are high RPM engines and need relatively high RPMs to prevent connecting rod bearing damage. I have been trying to keep the engine at about 2000 RPM, but the redline is only about 2200 RPM according to the mark on the tachometer. What speeds do you experienced user run your engines at? What engine speed provides 540 RPM at the power takeoff?