Heatingman 971 #1 Posted September 24, 2022 (edited) I’ve got the idle speed right around 1200 rpm, but with full throttle it goes well over 4000 rpm. manual shows 3600 rpm. To get that, throttle control is barely 1/2 way and throttle damper (inside carb) is maybe 1/4 or 1/3 open. Ive set the governor as described in the manual, Is this just a matter of limiting throttle travel to where I have 3600 rpm, or is this fuel setting related? Or other? Edited September 24, 2022 by Heatingman Share this post Link to post Share on other sites
squonk 43,769 #2 Posted September 24, 2022 Are you positive the governor shaft is hitting the stop as you're rotating it counter clockwise? If it is adjust it with the throttle travel. Share this post Link to post Share on other sites
ri702bill 9,387 #3 Posted September 24, 2022 9 minutes ago, squonk said: adjust it with the throttle travel. What Mike said. You need a GOOD throttle cable clamp that will not slip when tight. Does your full throttle positions - idle to WOT match the throttle shaft travel of your carb?? You MAY wish to reposition the wire link between the governor and carb if it is off.... different holes reduce or add to the travel... Bill 2 Share this post Link to post Share on other sites
Pullstart 66,687 #4 Posted September 24, 2022 The governor should be able to override any throttle setting… Did you rotate the carb linkage and the governor shaft counter clockwise looking at the engine front the front of the tractor? Did you have your cable disconnected during this time to verify only the carb plate was moving with the arm? Share this post Link to post Share on other sites
Heatingman 971 #5 Posted September 24, 2022 37 minutes ago, Pullstart said: The governor should be able to override any throttle setting… Did you rotate the carb linkage and the governor shaft counter clockwise looking at the engine front the front of the tractor? Did you have your cable disconnected during this time to verify only the carb plate was moving with the arm? Yes, loosened the Governor arm clamp, positioned arm for wide open throttle, turned the cross shaft full counter clockwise and tignened the clamp back down. Perhaps the Governor internally is broken? How could I tell? Share this post Link to post Share on other sites
Heatingman 971 #6 Posted September 24, 2022 Think maybe Ive got the spring in that crank arm out of place. I repositioned that, the Governor seems to work, but now the low speed and high speed are the same. Throttle has no effect. Share this post Link to post Share on other sites
Pullstart 66,687 #7 Posted September 24, 2022 20 minutes ago, Heatingman said: How could I tell? Disconnect the throttle all together. Fire it up and manually open the throttle. See if the governor pushes back Share this post Link to post Share on other sites
Heatingman 971 #8 Posted September 24, 2022 15 minutes ago, Pullstart said: Disconnect the throttle all together. Fire it up and manually open the throttle. See if the governor pushes back In that video, the carb is being sprung open all the time. I repositioned the spring on mine to do that, so the Governor works, but now that spring is holding pressure even at low, so low and high throttle at the lever control have the same effect -governed high throttle. Share this post Link to post Share on other sites
squonk 43,769 #9 Posted September 24, 2022 (edited) Make sure the u shaped part of the spring is in the slot on the arm. If you rotated the gov shaft counter-clock wise and it stopped the gov itself is probably ok. I had lots of issues with no throttle on my 857 until I replaced the cable with a longer one. The original was too tight. I also changed the angle the cable was at. Edited September 24, 2022 by squonk 1 Share this post Link to post Share on other sites
squonk 43,769 #11 Posted September 24, 2022 I tuck the extra cable under the hood. 1 Share this post Link to post Share on other sites
Heatingman 971 #12 Posted September 24, 2022 Think I got it now. It was related to the spring position and throttle cable connection point. There is a difference between low and high, but it governs back to around 2000 rpm. Low around 1200 rpm. But the If I have it in full throttle at start up, that arm does move back once the Governor kicks in. Why so low of rpm? IMG_0637.MOV Share this post Link to post Share on other sites
squonk 43,769 #13 Posted September 24, 2022 Video is too short. Get a YT account and film the throttle linkage and move the cable back and forth. Share this post Link to post Share on other sites
Handy Don 14,040 #14 Posted September 25, 2022 It is correct for the governor to hold the throttle wide open when the engine is not running. Why? Because the governor tries to hold a steady speed for a given input from your throttle cable. If the cable input is "Idle speed" and the governor sees "engine stopped", the governor is gonna try to rev up that engine! Share this post Link to post Share on other sites
Heatingman 971 #15 Posted September 25, 2022 Here is a video for throttle action with the motor off. It goes from idle position to wide open throttle. IMG_0640.MOV Share this post Link to post Share on other sites
Heatingman 971 #16 Posted September 25, 2022 So after some more fiddling in between other things, I got the speed range I believe the machine is supposed to have. low end right around 1200 rpm, high ended governed to just under 3600 had to move the cross shaft just a bit back from full counter clockwise, and I mean a just a little. A hair really. IMG_0643.MOV Share this post Link to post Share on other sites
gt14rider 946 #17 Posted September 26, 2022 Did this, couldn't get it to stay at 3600, won't go over 3600 now. Haven't had to adjust in years. Share this post Link to post Share on other sites
