X500 idle adjustment?

[Boog]

Hi all. Couldn't find any previous posts on adjusting the idle of an X500. Does anyone know how to do this? I easily find the 2 screws in front -- one limits the upper throttle travel and the other appears to limit the lower limit (idle.) However when I adjust this screw the actual RPM only goes down so far (which is still pretty fast) then the screw just loosens with no further affect on the RPM. It is almost as if there is some other governor on the thing limiting how low I can adjust the idle. Does anyone know if this is the case? And why would this be? My old GT235 did not have this; I could adjust the idle down til it died if I wanted. Thanks for any insight or experience with this........... J

 

[rekees4300]

From owner's manual:

Adjusting Carburetor

NOTE: Carburetor is calibrated by the engine manufacturer and is not adjustable.

If engine is operated at altitudes above 1006 m (3,300 ft), some carburetors may require a special high altitude main jet. See your authorized dealer.

If engine is hard to start or runs rough, check the TROUBLESHOOTING section of this manual.

Possible engine surging will occur at high throttle with transmission in "N" neutral and mower engagement lever disengaged. This is a normal condition due to the emission control system.

After performing the checks in the troubleshooting section and your engine is still not performing correctly, contact your authorized dealer.

 

[Boog]

I saw this in the manual but this is not talking about the idle "speed." This means I can't adjust the idle "mixture" (or fuel/air ratio.) So I still don't know why the idle speed screw only lets it go down so far............

 

[Boog]

For anyone wondering, I found the screw to lower the governed speed. I took the air filter cover off and it was easy to reach the screw pointing up right under where the filter cover is. Turned that out as well as the idle stop screw and the thing slowed right down.