ajp 0 #1 Posted June 16, 2020 I have a Wheel Horse 212-5 with a Onan E125V engine. Carb is a NN10668. I have cleaned the card twice trying to fix the over revving issue but still cannot fix the issues. I have tried to adjust the governor but still have the over revving issues. Can anyone shed some light on this issue? Thanks Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,483 #2 Posted June 16, 2020 Welcome to the forum. Need a service manual? Garry 1 Share this post Link to post Share on other sites
ajp 0 #3 Posted June 17, 2020 Thanks Gary, I have looked at the service manual and I could not find anything on over revving. I think it has to do something with the carburetor adjustments. I looked online for a carb refit for that carb but could not find one. I had trouble finding the carb itself for that engine. The only thing I can think of is that maybe the main jet in the carb is letting to much gas into the engine. Anyone have any ideas? Thanks Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,483 #4 Posted June 17, 2020 If the engine is running too fast the throttle cable is allowing that or the governor is not working. Does it run too fast all the time? If the load on the engine increases does the governor allow the carb to compensate for the load? The sound of the engine should not vary much with a change in the load on the engine. The maximum rpm is set by limiting the travel of the throttle cable. I don't know how your Onan does that. The throttle cable pulls on a spring to increase rpm. The governor tries to slow the engine down and the higher the rpm the more pressure the governor exerts to slow it down. The balance of those two forces is the rpm you end up with. If the engine is running at 1/2 speed and you manually move the governor arm to increase rpm does the governor try to pull the throttle shut to slow it down? Some engines use the mounting of the throttle cable casing to limit rpm. You loosen the screw that mounts the casing at the engine end and move the casing closer to the carb to slow it down. Pull it away from the carb to increase rpm. Do this with the engine not running to prevent an over-rev condition. Garry Share this post Link to post Share on other sites
ajp 0 #5 Posted June 25, 2020 Hi Garry, sorry I have not had a chance to work on the issue. I will be working on it today hopefully. Thx Share this post Link to post Share on other sites
