The Briggs 44R877-0001-G1 is a 24hp Intek V-Twin sitting in a Husqvarna yth24v48 mower (from Lowe's).
The mower sat for a while and at first I couldn't get it to start and realized a rat had chewed wires, not allowing me to start the mower. I fixed that, then the starter would work but the engine wouldn't come on. That started my journey, ending up in taking out the carburetor and cleaning everything out (there was indeed gunk in it, also causing the solenoid to get stuck, etc.).
Now it will start easy, but the engine revs at maximum throttle only. I also discovered that the throttle cable had come unseated at the lever under the dashboard, so it would move the cable housing along with it when adjusting. I fixed that so the throttle assembly under the carb works again. So I played with the linkages, governor, checked all the springs, etc. Whatever I do -- and I mean WHATEVER I DO -- when I start the mower, it revs at maximum. The RPMs are so scary high, I turn the mower off right away because I feel it's going to blow if I don't.
So I started thinking along the lines of the governor internal parts being messed up, but I want to make sure I have done all I can outside the engine before going there or having someone go there (tight budget). The mower literally has less than 20 hours on it, but it's 3 years old and so it sat a lot. However, oil was new, looks great and clear still from the other year. Installed a new fuel pump (the old one was actually fine), cleaned carb real well, no missing screws on butterfly. Have played with various spring tensions, throttle cable adjustments, loosening governor arm and tightening it with throttle full open (all the way down), what have you. But whatever I do, it starts with very high RPMs. As far as I can tell there are no hose leaks either.
So then I was trying to see what happens when I start the engine, having someone else start it while I sit in front of it. I notice the governor arm is not moving all the way up when it starts. So the linkage is not moving the carb air intake into the closed position or low idle. I was able to push up the governor arm / carb linkage and that DID lower the RPMs. But there was only a small window there, it was either low RPM and not a very smooth running of the engine, or it was full blast RPMs when I lowered it just a bit. So I CAN control the RPM that way, but why is the governor arm not moving up by itself?
When I just look at the governor arm while starting, it does move up a bit, but not all the way to idle position.
Any help is appreciated!
The mower sat for a while and at first I couldn't get it to start and realized a rat had chewed wires, not allowing me to start the mower. I fixed that, then the starter would work but the engine wouldn't come on. That started my journey, ending up in taking out the carburetor and cleaning everything out (there was indeed gunk in it, also causing the solenoid to get stuck, etc.).
Now it will start easy, but the engine revs at maximum throttle only. I also discovered that the throttle cable had come unseated at the lever under the dashboard, so it would move the cable housing along with it when adjusting. I fixed that so the throttle assembly under the carb works again. So I played with the linkages, governor, checked all the springs, etc. Whatever I do -- and I mean WHATEVER I DO -- when I start the mower, it revs at maximum. The RPMs are so scary high, I turn the mower off right away because I feel it's going to blow if I don't.
So I started thinking along the lines of the governor internal parts being messed up, but I want to make sure I have done all I can outside the engine before going there or having someone go there (tight budget). The mower literally has less than 20 hours on it, but it's 3 years old and so it sat a lot. However, oil was new, looks great and clear still from the other year. Installed a new fuel pump (the old one was actually fine), cleaned carb real well, no missing screws on butterfly. Have played with various spring tensions, throttle cable adjustments, loosening governor arm and tightening it with throttle full open (all the way down), what have you. But whatever I do, it starts with very high RPMs. As far as I can tell there are no hose leaks either.
So then I was trying to see what happens when I start the engine, having someone else start it while I sit in front of it. I notice the governor arm is not moving all the way up when it starts. So the linkage is not moving the carb air intake into the closed position or low idle. I was able to push up the governor arm / carb linkage and that DID lower the RPMs. But there was only a small window there, it was either low RPM and not a very smooth running of the engine, or it was full blast RPMs when I lowered it just a bit. So I CAN control the RPM that way, but why is the governor arm not moving up by itself?
When I just look at the governor arm while starting, it does move up a bit, but not all the way to idle position.
Any help is appreciated!