Engine running fast

[Tedwoodbear 1]

Hi, I have a wheelhorse lawnranger 69-73 (fibre glass body)

It has the recoil start, Tecsumseh 7 or 8? hp engine.

Problem is It's suddenly started running too fast and adjusting the throttle makes no difference. Moving the governer makes no difference either?

I can't see anything obvious and it seems odd that the problem seems to have come from nowhere. 

If anyone can help it would be gratefully appreciated.

 

Many thanks Mike. 

Edited November 1, 2021 by Tedwoodbear

[oldlineman 1,537]

maybe a broken spring on the carb linkage

[Achto 29,391]

4 hours ago, Tedwoodbear said:

Problem is It's suddenly started running too fast and adjusting the throttle makes no difference. Moving the governer makes no difference either?

 

Pull the air cleaner off and make sure that the butterfly still opens and closes inside the carburetor. I even had the one completely fall off once making the engine run wide open + all of the time.

Edited November 2, 2021 by Achto

[Howie 899]

Or no plate on the throttle shaft anymore because the screws came out.

[gwest_ca-(File Mod) 11,472]

 

[Snoopy11 5,718]

I had a similar issue with a Briggs engine. Believe it or not, it was the head gasket...

 

Don

[Tedwoodbear 1]

Thanks everyone. apologies for delay in replying. I don't log on much!

[RED-Z06 2,567]

Throttle butterfly is probably off the shaft and wedged into the intake behind the valve.  A secondary issue, if this is the case...that means it ate the screws