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was out cutting up leaves, mower was operating as designed, when of a sudden it revs to an extremely high rpm and holds. I quickly shut it down and took the starter off for a look see.
nothing appears to be remiss, all parts in place and connected. did notice that there is no paddle on the governor so did research on the particular engine (B&S 11P902-0693-B1) and verified its not sposed to have a paddle. now I'm not sure how the governor is sposed to work since the governor control lever controls the carb through a mechanical link. but what controls the control lever, is there some type of internal (to the engine) device? gotta say the IPL from briggs & Stratton is totally empty regarding internal features.
frankly, I'm at a loss as to further troubleshooting
I am mechanically inclined regarding large and small engines but would rather not crack the case unless I have to. any help or suggestions would be greatly appreciated.
jerry

By "paddle" I am assuming you mean the big air vane by the flywheel on many of the smaller engines, no, this one is on the oil slinger run off of the cam inside the engine, #43 on this pic.




But your problem may just be in the carb, that the throttle plate flap has just lost a screw, that is more likely.

Fish said:

By "paddle" I am assuming you mean the big air vane by the flywheel on many of the smaller engines, no, this one is on the oil slinger run off of the cam inside the engine, #43 on this pic.




But your problem may just be in the carb, that the throttle plate flap has just lost a screw, that is more likely.

Click to expand...

thanks fish. yeah that air vane is what I was calling the paddle. appreciate the pic. just in case its not the throttle plate flap how much does the oil slinger runoff cost? also, how can one go about getting a true ipl that includes the internal pieces?
let me do some checking and i'll report back. hope its not the screw cause that could have migrated to undesirable locations.
jerry

You can go to Briggs site I think and get a better ipl.

The loose screw is probably the better of the scenarios.....

I remember seeing your username for many, many years... I assume that you are the same guy?

Fish said:

I remember seeing your username for many, many years... I assume that you are the same guy?

Click to expand...

yeah same guy. I remember you disappeared for a while but I found you on another site although I have a different user name there. glad to find you again, your knowledge and willingness to share have saved my bacon more than once.
I got the "light weight" ipl from B&S site; probly should have looked harder there. will do so.

jerrycmorrow said:

yeah same guy. I remember you disappeared for a while but I found you on another site although I have a different user name there. glad to find you again, your knowledge and willingness to share have saved my bacon more than once.
I got the "light weight" ipl from B&S site; probly should have looked harder there. will do so.

Click to expand...

ok, my duh on the ipl. I've got it. do I need any gaskets to get to the slinger? can you give me a hint about what I should or should not expect or tear down?
do you have access to an exploded view so I can use it as a map?

jerrycmorrow said:

ok, my duh on the ipl. I've got it. do I need any gaskets to get to the slinger? can you give me a hint about what I should or should not expect or tear down?
do you have access to an exploded view so I can use it as a map?

Click to expand...

Actually no... Back when those engines came out, if there was any problem it was shortblock or a new engine, so I never have been too deep in one....

Thanks for your help

This service manual might be of help.

http://dl.dropbox.com/u/12502267/B&S Service Manuals/10_276781SingleCylinderOHV.pdf

Rivets said:

This service manual might be of help.

http://dl.dropbox.com/u/12502267/B&S Service Manuals/10_276781SingleCylinderOHV.pdf

Click to expand...

Thanks much rivets. Now I can visualize before jumping in.
Jerry

took the carb off this weekend. no screw on the throttle plate and it was looking good. looks like i may have take it apart. whatta PITA getting the self propelled mechanism off the bottom so i can remove the engine.
just wondering - since this may be an oil slinger issue. i'm assuming the slinger is immersed in the oil. if the oil is low will that affect the governor function? i'm back at work so don't know if its low or not. forgot to check it the other day. will have to just for jollies.

nah! full of oil. aint got time to fix it. gonna buy a new one. will fix it one day.

updating this OLD!!!!!, ya think?, thread.
Decided to tear it down to see what could be done.
Turns out the oil slinger/governor has bent ends so when the centrifugal forces go into effect the arms don't pull the plastic "rod" up which, in turn, then doesn't adjust the throttle on the carb thereby governing the rpm's. Got pieces coming. Will let you know

@Rivets @Fish
FYI. See previous post too
Mower runs good. Now just need tranny control cable. Amazing that it couldn’t sit outside for six years without corroding. Hoping it’s the cable anyway cause don’t wanna hafts fool with the tranny

Drive belt keeps jumping off. Replaced the rear baffle that had a sizable chunk out of it cause I thought the rocks and sticks my yard grows mighta been knocking the belt off. That didn’t fix it. Now I’m wondering if the drive belt or cable might be stretched and causing the problem.
what say y’all?

Take the belt off an lay it flat on the ground.
If it wants to sit in a twisted way then it is buggered.
Kevlar belts do not stretch, they wear thin so go sloppy.
However when jumping off they can also damage the chords within the belt

thanks bert. ordering a belt, Stens