175 runaway motor

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   Ok guys I need some help. My 175 decided the other day to let her motor go nuts! I had the carb rebuilt last fall. I took the carb apart and everything is good. I then took the governor apart and the weights had a little slop in them so I replaced both weights and pins. Now there's no slop. I started the tractor and still no change. SO WHAT DID I MISS? Any help would be greatly appreciated!

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keithpearson Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 20 Apr 2014 Location: wis Points: 86	Post Options Post Reply Quote keithpearson Report Post Thanks(0) Quote Reply Topic: 175 runaway motor Posted: 6 hours 11 minutes ago at 11:10am
	Ok guys I need some help. My 175 decided the other day to let her motor go nuts! I had the carb rebuilt last fall. I took the carb apart and everything is good. I then took the governor apart and the weights had a little slop in them so I replaced both weights and pins. Now there's no slop. I started the tractor and still no change. SO WHAT DID I MISS? Any help would be greatly appreciated!
	WD45,160 6040,D14,D15,D17,D19,D21,and still looking for more

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DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 22861	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 6 hours 1 minutes ago at 11:20am
	Your hand throttle is in control of idling the engine down fully to 400 RPM. If you cannot idle it down, I might think the throttle cable is unhooked at the engine oil fill cap, or inside the instrument panel. Your new governor weights aren't identical to the old ones, correct ??? Heavier weight?? different fulcrum riser ??

steve(ill) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 91058	Post Options Post Reply Quote steve(ill) Report Post Thanks(0) Quote Reply Posted: 3 hours 55 minutes ago at 1:26pm
	yep... engine can not REV UP if the Throttle plate is CLOSED or cracked open (idle)... check the cable and throttle plate..
	Like them all, but love the "B"s.

tbran Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 14 Sep 2009 Location: Paris Tn Points: 3674	Post Options Post Reply Quote tbran Report Post Thanks(0) Quote Reply Posted: 3 hours 48 minutes ago at 1:33pm
	... and also, remove the throttle rod to the carb at the carb - hold the throttle closed at idle and crank the tractor - observing all safety stuff - with the throttle at 1/2 slowly let the engine rev up - hold the disconnected throttle rod with the left hand and as the engine revs up the rod should move to close the throttle. If it does look for binding in linkage or the linkage hitting the block. We saw a throttle tab come loose from the throttle shaft and just that little bit of play caused over/under revving. IF it never moves - something is wrong inside the gov itself as Doc suggests. Edited by tbran - 3 hours 46 minutes ago at 1:35pm
	When told "it's not the money,it's the principle", remember, it's always the money..