D15 Carb

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   Was raking hay the other day and engine started surging, then wanted to die. Suspected it might be the carb, so hopped off and turned rich/lean adjustment screw out and after about half a turn, she smoothed out and ran fine after that. 

Trouble is that screw is almost loose enough to be floppy and problem may have developed by screwing itself in. Tried to tighten the smaller of the two nuts and it is more or less as far down as it is going. Does that have some form of packing in there that can be or needs to be replaced? Or......how does one firm that screw up so setting doesn't wander? 

I assume for best fuel economy for light duty use like raking hay, one wants it running as lean as it can?  Right now it is about 3 turns out. 

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modirt Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 18 Jul 2018 Location: Missouri Points: 8425	Post Options Post Reply Quote modirt Report Post Thanks(0) Quote Reply Topic: D15 Carb Posted: 14 hours 59 minutes ago at 4:51pm
	Was raking hay the other day and engine started surging, then wanted to die. Suspected it might be the carb, so hopped off and turned rich/lean adjustment screw out and after about half a turn, she smoothed out and ran fine after that. Trouble is that screw is almost loose enough to be floppy and problem may have developed by screwing itself in. Tried to tighten the smaller of the two nuts and it is more or less as far down as it is going. Does that have some form of packing in there that can be or needs to be replaced? Or......how does one firm that screw up so setting doesn't wander? I assume for best fuel economy for light duty use like raking hay, one wants it running as lean as it can? Right now it is about 3 turns out.

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steve(ill) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 86625	Post Options Post Reply Quote steve(ill) Report Post Thanks(0) Quote Reply Posted: 13 hours 39 minutes ago at 6:11pm
	3 turns out is normally i little excessive.. It might mean you have a little piece of crap plugging a jet inside.. I have wrapped teflon tape on the threads to tighten things up somewhat.. a coil spring under the screw head can also help... if it has a head on it..
	Like them all, but love the "B"s.

Kenny L. Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: NEIOWA Points: 1343	Post Options Post Reply Quote Kenny L. Report Post Thanks(0) Quote Reply Posted: 13 hours 24 minutes ago at 6:26pm
	Modirt, Text me your address and I will send you something that will fix you right up it's off of the packing that was use on the water discharge pump on the wash plant that I run at one time. I did have your address but miss place like a lot of stuff around here. I text you. Kenny Loughren. Edited by Kenny L. - 13 hours 19 minutes ago at 6:31pm