OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Honda Engines Honda GCV160 mower

centxn, to clarify what I am talking about in the previous post, look at the area boxed in yellow in this copy of your picture above:


Compare it with this diagram from the service manual, for the traditional GCV160 governor system:


As you can see, the traditional system, with screw-adjustable idle, just has a wire link from the governor arm to the throttle butterfly on the carburetor, with an anti-oscillation spring around the outside of that wire link. That is the whole system.

Your engine has a complicated-looking stack of apparatus on top of the throttle butterfly, with no direct wire link from the governor arm to the throttle. There is just the usual anti-oscillation spring from the governor arm.

Note the slot circled in yellow, in the throttle butterfly bell crank:


It looks as if that slot should engage with a device on the bottom of the complicated stack, because if it does not, there is no real control of the throttle position - the anti-oscillation spring cannot control the throttle, though it can hold it partly open when speed is set for minimum, and open it more when speed is set higher. In your other picture I see a strange device on the bottom of the complicated stack, which might or might not be involved in the throttle control process:


Can you show us some detail about the bottom of the complicated stack, in particular any part which might be capable of engaging with the slot in the throttle butterfly?

It looks to me as if there is something in that governed idle mechanism that causes a problem when it has been dismantled and reassembled by someone who does not know the secret, whatever that turns out to be. Check this thread:
http://forums2.gardenweb.com/forums/load/lmower/msg06151832696.html

Because the anti-oscillation spring holds the throttle partly open when the speed control is set for minimum, just lifting the carburetor up into position under the complicated stack, would probably not result in the right part of it engaging in the slot in the throttle butterfly. It would be necessary to push the butterfly toward minimum throttle, while lifting the carburetor.