Runaway throttle

Sun Jul 28, 2013 8:54 pm

Engine starts and runs fine, but w/the throttle completely back it w/gradually keep increasing RPM's up to wide open even though the throttle lever isn't moved?? Where do I look first? Thanks, Dusty B

Re: Runaway throttle

Sun Jul 28, 2013 8:59 pm

Check for slop in the throttle linkage between the governor and the carb.

Re: Runaway throttle

Sun Jul 28, 2013 9:00 pm

Check all linkages from throttle control to the carb. Has the rod come loose between the left side rockshaft and the carb?

Re: Runaway throttle

Mon Jul 29, 2013 2:31 pm

check the pin in the gov weights

Re: Runaway throttle

Tue Jul 30, 2013 7:16 am

Thanks, forgot to mention that when I do pull back on the throttle lever it w/slow back down temporarily, but then speeds back up when I release the pressure on the throttle lever. Really have to put pressure on to get it to slow down though. Dusty B

Re: Runaway throttle

Tue Jul 30, 2013 9:23 am

Sounds like the governor is bad. Boss Hog probably nailed it. The weights are what bring the throttle down when the RPMs go up.

Re: Runaway throttle

Tue Jul 30, 2013 10:51 am

I have two of them doing the same thing,--- only after they have been run and pulled hard and are warmed up! thanks; sonny