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#1
02-26-2011, 06:01 PM
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128 surging
i cant get my 128 to stop surging. the carb was just soaked,blown and cleaned out and rebuilt. gas cap isnt the factor. closed the main jet completly then went 2 turns out and tried it = surging. then i would keep turning it out little by little and get it to stop then i would run it for a bit and it would either surge again or load up. whats the deal here????
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Nick.  Cub cadets 100, 125, 86, 108, 109, 128, 129, 129, 149, 149, 169, 1450, 1650 and a handfull of parts tractors. #40 box blade, ih back blade, rear ih rock rake, #2 cart, windbreaker soft cabs, windbreaker hard cab, cozy cab, kwikway loader , wards corn planter, brinly plows, culitvator, rear blade, disc and the usual decks, snowblowers and 2 tillers 
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#2
02-26-2011, 06:25 PM
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maybe something in fuel line between gas tank and carb inlet. could be fluttering letting little gas thru ,motor runs up , pulls more fuel and closes off line then when motor dies it let more gas thru. I have heard of fuel line tubing wall splitting inside causing this too. It creates a valve inside the line and is very hard to find. This is my suggestion- Good luck!
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#3
02-26-2011, 07:25 PM
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Yes. Throttle shaft is nice and tight. And governor should be all set because my mechanic just had this motor completely apart. That's why I'm so stumped on it???
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Nick. Cub cadets 100, 125, 86, 108, 109, 128, 129, 129, 149, 149, 169, 1450, 1650 and a handfull of parts tractors. #40 box blade, ih back blade, rear ih rock rake, #2 cart, windbreaker soft cabs, windbreaker hard cab, cozy cab, kwikway loader , wards corn planter, brinly plows, culitvator, rear blade, disc and the usual decks, snowblowers and 2 tillers
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#5
02-26-2011, 07:48 PM
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Did you stand on your head and say 3 hail Marys?
On a lighter note.Check the fuel shutoff screen in the tank to see if it is clogged,or your main jet needle is not clean enough,try another one if you have it.Did you reset the gov cross shaft? Or did you put enough gas in it,just messing with ya'
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Up to 533 and counting... I give up updating my profile!
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#6
02-26-2011, 07:50 PM
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Yeah it ran great before but then we took the motor apart cuz the main bearing was squealing. I'll have to check the carb/block gasket. I'll take the fuel line off too like what wiliam said
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Nick. Cub cadets 100, 125, 86, 108, 109, 128, 129, 129, 149, 149, 169, 1450, 1650 and a handfull of parts tractors. #40 box blade, ih back blade, rear ih rock rake, #2 cart, windbreaker soft cabs, windbreaker hard cab, cozy cab, kwikway loader , wards corn planter, brinly plows, culitvator, rear blade, disc and the usual decks, snowblowers and 2 tillers
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#7
02-26-2011, 11:30 PM
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Good luck buddy, keep us posted
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#8
02-27-2011, 12:13 AM
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I didn't even think of this. But I bent the tab on the float that hits the needle and seet. I bent it to put more pressure on the needle because gas was running out. Do you think its maybe not getting enough fuel cuz of this? If I remember right the float is almost perfectly horizontal
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Nick. Cub cadets 100, 125, 86, 108, 109, 128, 129, 129, 149, 149, 169, 1450, 1650 and a handfull of parts tractors. #40 box blade, ih back blade, rear ih rock rake, #2 cart, windbreaker soft cabs, windbreaker hard cab, cozy cab, kwikway loader , wards corn planter, brinly plows, culitvator, rear blade, disc and the usual decks, snowblowers and 2 tillers
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#9
02-27-2011, 02:18 AM
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Quote:
Yes, I believe that if the float was set wrong it could cause a lean mixture.
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Hello. My user name says it all. I have a lot of hobbies. I have a 1250 Cub that I just got and will be working on it. It runs fairly well. :
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