Strange think happened

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   Mowing the yard with my 720 and belly mower. I could tell it was running rich and told myself I need to adjust the hard to reach mixture screw after I’m done and she has cooled down. Well, got most of my yard done and decided that I needed to take care of this because it was getting worse. By the time I got her to the garage she was really running rough. So, after about 2 hours I went and lifted the hood and began the repair. I decided to start it just to make sure I had good fuel delivery. Fuel was pouring out the bottom of the carb. Removed the carb and laying on top the engine was the main jet. It had vibrated completely out, its a wonder it ran as long as it did. Set it at 2 turns out and she ran fine. Finished up the yard. Lucky it didn’t catch on fire. I have never had this happen before.

Edited by AC720Man - 10 Oct 2020 at 9:47pm

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AC720Man Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 10 Oct 2016 Location: Shenandoah, Va Points: 4926	Post Options Post Reply Quote AC720Man Report Post Thanks(0) Quote Reply Topic: Strange think happened Posted: 10 Oct 2020 at 9:43pm
	Mowing the yard with my 720 and belly mower. I could tell it was running rich and told myself I need to adjust the hard to reach mixture screw after I’m done and she has cooled down. Well, got most of my yard done and decided that I needed to take care of this because it was getting worse. By the time I got her to the garage she was really running rough. So, after about 2 hours I went and lifted the hood and began the repair. I decided to start it just to make sure I had good fuel delivery. Fuel was pouring out the bottom of the carb. Removed the carb and laying on top the engine was the main jet. It had vibrated completely out, its a wonder it ran as long as it did. Set it at 2 turns out and she ran fine. Finished up the yard. Lucky it didn’t catch on fire. I have never had this happen before. Edited by AC720Man - 10 Oct 2020 at 9:47pm
	1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD

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macvette Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 13 Jun 2011 Location: nekoosa, wi Points: 1657	Post Options Post Reply Quote macvette Report Post Thanks(0) Quote Reply Posted: 11 Oct 2020 at 7:18pm
	Boy, you really are lucky there was no fire! Better go buy a lottery ticket. lol.

Steve in NJ Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Andover, NJ Points: 11823	Post Options Post Reply Quote Steve in NJ Report Post Thanks(0) Quote Reply Posted: 19 Oct 2020 at 7:41am
	That could've been the first 720 on the moon Rob! LOL! That's weird. Might have to put a little pipe dope or loctite on the threads to keep it from vibrating out again.... Steve@B&B
	39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife

AC720Man Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 10 Oct 2016 Location: Shenandoah, Va Points: 4926	Post Options Post Reply Quote AC720Man Report Post Thanks(0) Quote Reply Posted: 19 Oct 2020 at 8:54pm
	Good idea Steve. The packing nut snugged right up and I have no leaks. I will keep an eye on it and see how it does. I’ve owned this one for about 6 years and this is my first issue.
	1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD