Small Engines (Lawn Mowers, etc.): 31H777 Governer, briggs and stratton, screw driver


Question
i thin i have a problem with the gov. it wants go all out all the at tdc every time evan at idle. if i hol the rod still i can get it run ok. im not sure what conrtrol its i looked on B&S web site and cant tell of the diagrams. My guess would be some kind of Weight? is it on the crank or rod? what would cuase it 2 get stuck open. is like 2 know before i rip it all apart

Answer
 Hello Dale:

 Go to this Addy http://www.outdoordistributors.com/ and Select the B. Then Select Briggs and Stratton. Then Select Don't have Part Numbers. Then Select the File #31. Then Select the Folder #31H700. This is the Breakdown/IPL (Diagram) I am Using for Reference. Take a Screw Driver and Hold the Governor Shaft. Try to Move the Governor Arm. If the Governor Arm Moves while you Hold the Governor Shaft, then the Governor Needs to be Reset. Sometimes the Engine Vivration will Loosen the Bolt that Holds the Governor Arm to the Shaft and the Problem you Described will Occur. If the Governor Arm is Tight on the Shaft, then Remove the Oil Pan and Replace the Governor(#43 on page 2 of 12). The Oil Pan is as Far as you Need to Disassemble the Engine to Replace the Internal Governor. The Governor is Plastic and Does Tend to Break from Time to Time. When Replacing the Oil Pan After Replacing the Governor, Make Sure the Governor Shaft Ear is Positioned Over the Governor. If the Governor Shaft Ear (Picture of the Governor Shaft is on Page 7 of 12 #616) is Not Positioned Properly Over the Internal Governor, The Governor will Not Function. Also, on this Style Governor Shaft, the Ear May have Come Loose and is Allowing the Governor Shaft to Spin and Not Allow the Internal Governor to Move the Governor Shaft. Once the Governor or Governor Shaft (whichever is bad) has been Replaced and the Oil Pan Re-Attached to the Engine, then you are Ready to Set the Governor. Loosen the Governor Arm from the Shaft. Then Hold the Governor Arm so the Carburetor is at the Full Throttle Position. Turn the Governor Shaft Clockwise Until it Stops. Now Holding the Shaft and the Governor Arm Tighten the Governor Arm Bolt. If the Engine Runs at High RPMs and Doesn't Idle, then Reverse the Direction you Turn the Governor Shaft and Tighten the Lock Bolt. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John