25 HP Briggs won't rev up to top rpm.
The motor will start fine. Runs on low rpms (idle) fine. When I move the throttle to fast, the rpms go up a little, but not much.
So for what I have tried:
-Statically set governor
-Set Low idle governor settings
-Tried to set High-rpm governor settings, but the rpms didn't change. A gracious poster put up pictures of the correct location of the governor springs, so I know they are right.
-set valves. Again helped by a very gracious user on here, so I know they are right.
-checked compression. 150 on one side, 147'ish on the other.
-pulled flywheel and checked for a sheared key. Key was good.
-checked for spark. I have spark from both coils and plugs
-tried to test diodes in coil circuits, but my meter isn't working right.
-bypassed the fuel solenoid with a shutoff and disconnected the wires to it and took out the plunger.
-gave the carb a thorough cleaning.
The voltage regulator is bad and the clutch/brake safety isn't working. The safety issue is a problem that developed today, even though the mower hasn't been moved from my garage.
I don't know what to check next.....
A little background. I am starting a new post because my problem keeps changing as I eliminate symptoms.
I changed the sump gasket on a 445777-0168-e1 Briggs 25 hp. But I used RTV instead of a gasket. Nothing is rubbing that I can feel when I turn the flywheel, but I ordered gaskets anyway and will swap it out when it arrives.
In the meantime, after putting the motor back together, I have had several problems. Intermittent spark, gas shooting out of the carburetor, mis-adjusted vallves, you name it.