Posted August 12, 2017 - 03:02 PM
Posted August 12, 2017 - 04:55 PM
Posted August 12, 2017 - 05:30 PM
Posted August 13, 2017 - 02:02 PM
If it was me, I would want to know if the engine is actually being loaded down. I would separate the engine from the various loads one at a time. I would take the belt off that runs from the bevel gearbox to the hydro to see if that changes anything. If not, I would remove the belt that runs the power lift group. Then it would be decoupling the drive shaft to the bevel gear box. Something has to be loading the engine.
Posted August 13, 2017 - 08:35 PM
Posted August 13, 2017 - 09:35 PM
I'm gonna go with: 'cause that's the way governors work. When your engine is not running, the governor forces the the throttle open. Engine speed counter acts that force. When they are in balance, RPM = governor tension = throttle position. As engine RPM drops the governor pulls the throttle open. A small drop in engine speed with send the throttle wide open in order to bring the rpms back up. If the rpms don't come up, the throttle will stay open. Your governor isn't over-reacting, your engine is under-reacting because it is under a heavy load or lacking fuel.
You might get those symptoms with a partially or fully blocked high speed circuit in the carb. If it is, the engine may run fine at idle and maybe higher without a load, but it won't have the fuel flow to go to higher rpms. When the throttle is increased, the governor opens the throttle but the engine rpms don't come up because there isn't enough fuel coming through the high speed ports in the carb, the fuel / air mix goes lean & the engine bogs & dies.
Edited by New.Canadian.DB.Owner, August 13, 2017 - 09:39 PM.
Posted August 14, 2017 - 05:34 PM