from what i know most briggs engines are rated for 3600 rpm max
Correct. The governor uses a pair of centrifugal weights that push against a static spring. The spring tries to hold the throttle open and the centrifugal force tries to close it. It is this static spring I adjusted to pull harder against the governor.It's the governor that controls the carb's throttle plate, not the lever on the tractor's dash.
I'm putting you up for the "Humanitarian of the Year" award. :sidelaughI had to beat a confession out of my little brother so he already paid for his indiscretion. I figured no point in both of us getting a beating.
Right, I got that. I guess my question is, if I adjust the govener to hold the throttle all the way open( at 3600), then when the engine comes under load, the throttle will already be all the way open. How will it adjust engine speed when it is already holding the throttle against the stop? When the engine comes under load does the throttle try to shut automatically? Should I go ahead and adjust govener on my 35 year old Tecumseh OH160?If the engine is running at 3600 and it comes under a load that causes the RPM to drop to 2800 RPM, then the governor will cause the throttle plate to open wider to allow more air/fuel mixture into the cylinder. This is done to try and bring the RPM's back to 3600 and not above that figure. It's the governor that controls the carb's throttle plate, not the lever on the tractor's dash.
Most engines are designed to run above their peak torque band so that when they do come under heavy load and the rpm's drop a bit, they hit that peak torque point and that's what prevents the rpm from falling any further. As an Operator, you're supposed to be listening to your engine and adjusting your ground speed accordingly so that the engine can get back to 3600 RPM as quickly as possible. That way, your mower deck or snow blower will continue to operate at peak efficiency.