Briggs 15C114 0131 E8 Governor Setting

["Manic-Mechanic" 1,228]

I have been working on a surging issue and just made this video today, watch it and see if you can tell me what’s missing on the governor assembly? I didn’t catch it at first, but “think” I may have found the issue!

(I watched a you tube video on adjusting the governor for a throttle-less assembly.)
The small spring listed as part 209A is missing from the governor bracket to the governor arm. Also missing from the parts diagram under the 15C114, so I wondered why?

I was given a different spec from Gary, which helped bring up this spring, 
(15D102 0111 E1)

209A is part 691278, normally connects to the throttle lever to the governor arm on the 15D spec

But is it also supposed to be on the other assembly 15C spec

Could this be my surging issue?

 

 

 

IMG_5510.MOV

793100 shows the same spring on the throttled assembly.

Edited February 8, 2021 by oldman
793100

[Achto 28,868]

Good call adjusting the gov arm. Improper adjustment will cause hunting.

Edited February 8, 2021 by Achto

["Manic-Mechanic" 1,228]

Thanks, but the surging is about half gone.

The carburetors are designed so lean, then the fuel is filthy! So, getting it totally smooth isn’t gonna be easy! Now a nice Kohler K or M Series, totally different story!

["Manic-Mechanic" 1,228]

I tried to find a service tech to learn more about this spring, whether or not it’s missing on my engine?

I have yet to find a service manual for the Briggs 1100 series. So I put it back together for now. 

Edited February 9, 2021 by oldman

[gwest_ca-(File Mod) 11,272]

This is just an educated guess.

 

There has to be spring connecting the throttle to the governor. That is what allows to governor the freedom to operate.

The heavier spring in the center could be eliminated because they both apply pressure to the same governor arm. A more effective governor would require more spring. 

The longer and lighter spring just fine tunes the heavier spring if it is there and the reason for all the holes. Makes the governor more or less responsive depending on the hole selected.

 

The throttle tries to increase rpm by increasing the governor spring tension.

The governor tries to reduce rpm and the higher the rpm the more force it creates.

When those two forces are the same that is the rpm you get.

 

The reason the governor is adjusted at wide open throttle with the engine not running is to match the governor's range of operation to the carb throttle range of travel.

No governor force = wide open throttle.

["Manic-Mechanic" 1,228]

Nicely put! So, no other spring required.

(I ordered the 594015 carb)

["Manic-Mechanic" 1,228]

I got lucky, ordered this whole kit as due to the crushed box, (whopping 24 bucks) , free shipping

594015