Briggs 16HP Twin, model 402707, type 0010 on a Wards G33470A. Seems to start and run out fine. When cold, I choke it to start, starts right up. Then starts all day without choking. When cold, it idles right down. However, after running a few minutes, I can't get the idle down from the mid point. The throttle goes all the way down, it just doesn't idle down to where it was when cold.
From looking at the manual I downloaded yesterday from here, it looks like 1000 -1300 RPM is where the idle gets set? (don't recall if 1000 or 1300 was the setting for this engine off hand). Is this the normal idle speed, or is this just what the preset is supposed to do?
I don't have a tach to use anymore. Any suggestions on a tach would be helpful. Also I need to know where to hook it up.