Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I am having a small issue with my fall project, a 1980 Toro 724.  The engine RPM under no load increases ~500 RPMs (no surging).  This is making governor idle speed adjustment difficult.  The adjustment is made by opening or closing a loop in the linkage.  Does anyone have some advise for me before I open this "classic" up and inspect the governor. 

Thanks

 Thanks trouts2

After reading your post I beleive my problems are being cause by spring tension and the holes I am using on the governor arm and for the spring (farthest ones out).  Earlier I did replaced the old spring,  I do not know which holes to use as the linkage was not assembled when I began the project.  I will try moving the governor linkage and the spring in one hole which will reduce th leverage available to the spring.  I will post back with results.

Photo

I complete what I mentioned above and adjusted the arm; it worked.  Before the fix the governor did not have enough headroom to lower the speed under no load.  

 I moved some wet EOD pile up.  This thing is a beast.