422707-121401 sump gasket

[Forest#2]

Take a look at this video for a engine model same as yours.
This guy is making the static governor adjustment. (opposite of the recommended procedure)

422707-1275-1
Setting governor for Briggs L Head opposed twin 18hp

Keep in mind that the governor shaft only moves approx 90 degrees or less full travel.
After making a static governor adjust if the engine is overspeeding I do as this guy and adjust the governor just the opposite.
I've seen some Briggs engines that the governor shaft had to be adjusted completely backwards of what the service manual indicates to keep from overspeeding and to get lower rpms per the throttle.

With the engine not running and the throttle set to idle manually turning the governor shaft through it complete range should move the carb throttle shaft towards idle. If not the springs and or linkages on the throttle plate is binding or wrong.

 

[McTurff]

Take a look at this video for a engine model same as yours.
This guy is making the static governor adjustment. (opposite of the recommended procedure)

422707-1275-1
Setting governor for Briggs L Head opposed twin 18hp

Keep in mind that the governor shaft only moves approx 90 degrees or less full travel.
After making a static governor adjust if the engine is overspeeding I do as this guy and adjust the governor just the opposite.
I've seen some Briggs engines that the governor shaft had to be adjusted completely backwards of what the service manual indicates to keep from overspeeding and to get lower rpms per the throttle.

With the engine not running and the throttle set to idle manually turning the governor shaft through it complete range should move the carb throttle shaft towards idle. If not the springs and or linkages on the throttle plate is binding or wrong.

Take a look at this video for a engine model same as yours.
This guy is making the static governor adjustment. (opposite of the recommended procedure)

422707-1275-1
Setting governor for Briggs L Head opposed twin 18hp

Keep in mind that the governor shaft only moves approx 90 degrees or less full travel.
After making a static governor adjust if the engine is overspeeding I do as this guy and adjust the governor just the opposite.
I've seen some Briggs engines that the governor shaft had to be adjusted completely backwards of what the service manual indicates to keep from overspeeding and to get lower rpms per the throttle.

With the engine not running and the throttle set to idle manually turning the governor shaft through it complete range should move the carb throttle shaft towards idle. If not the springs and or linkages on the throttle plate is binding or wrong.

Take a look at this video for a engine model same as yours.
This guy is making the static governor adjustment. (opposite of the recommended procedure)

422707-1275-1
Setting governor for Briggs L Head opposed twin 18hp

Keep in mind that the governor shaft only moves approx 90 degrees or less full travel.
After making a static governor adjust if the engine is overspeeding I do as this guy and adjust the governor just the opposite.
I've seen some Briggs engines that the governor shaft had to be adjusted completely backwards of what the service manual indicates to keep from overspeeding and to get lower rpms per the throttle.

With the engine not running and the throttle set to idle manually turning the governor shaft through it complete range should move the carb throttle shaft towards idle. If not the springs and or linkages on the throttle plate is binding or wrong.

I have watched that video and every video on static adjustment tried to adjust both ways!
My Govenor arm moves throttle plate as it should open an closed with engine at idle!
The other thing is if you turn the governor shaft the opposite direction the arm locks up so you know it won't work that direction it only goes one way or works one way or direction!

 

[McTurff]

Ok went through more tests and all suggestions for my problem!
No change
Just to clarify when I remove springs from governor arm the engine should go to idle??
Mine dose not !
I am going to open the engine up again this weekend and see if governor came off when reinstalling or the governor arm is flipped which i don't think it did!
But other than that unless someone has any other ideas I don't know what else to do!
I can't find anything on the internet and beyond that someone has had the issue im having!
The only other thing i can think of is the governor cap or weights that hit the governor arm flap are not connecting??
If that's the case something could be bent but I just did not see that was the case when I opened the engine up last time!