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#1
03-15-2012, 07:31 PM
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Expert advice needed on a #26 Carb
My 124 has never idled well since I bought it...3-4 years ago.
My 122 runs like a top....I can get it to idle so low that i have to bump it up so it doesn't get too hot. Back to the 124. I took the carb apart, removed the plug in the side, and the small one in the top. Tanked it for two days, blew it out, went through all the passages with reamers I use on my paint guns. then gave it a light polish. It even looks new. installed a new throttle shaft bushing, and even found a rubber seal to top it off. rebuilt flawlessly. still won't idle. So I just pulled the tank and carb off the 122, and put them on it...voala! it started instantly on idle, and then idled at about 800. Is there another passage I don't know about...or something stupid that I am missing? I don't believe that a carb can just "Go Bad".
__________________
Fly Fishing is not a sport...It's a way of life. 
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#2
03-15-2012, 07:47 PM
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Did you check the vent tube to make sure it was clear and clean? And before you ask if I have a pic, no, I am looking for one now.
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DWayne 1973: 128, ag tires, 3pt. lift, spring assist, lights, 42" Deck 10" moldboard plow 2016 XT1 42" deck 18HP
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#3
03-15-2012, 07:55 PM
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__________________
DWayne 1973: 128, ag tires, 3pt. lift, spring assist, lights, 42" Deck 10" moldboard plow 2016 XT1 42" deck 18HP
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#4
03-15-2012, 08:30 PM
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carb repair
you might want to check for a vacuum leak ,around the base of the carb,did you check the base of the carb for being flat .if not remove carb and placeit on a flast surface ,,with some sand paper ,and rotate it on the paper ,till it is flat ,then reinstall do not over tigthen ,hope this helps . David
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#5
03-15-2012, 08:39 PM
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ALL passages have been thoroughly reamed with small flexible round files and pipe cleaner style brushes.
It even has new mixture screws. I sanded the base on a flat steel table....I use adhesive backed fine emery glued down when I true up heads or carbs.
__________________
Fly Fishing is not a sport...It's a way of life.
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#6
03-16-2012, 08:32 PM
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Problem solved....purrs like a kitten at a very low idle.
I drilled the main mixture screw out with a #57 drill at the bottom two holes....and soldered the middle ones up. Thanks for your input. -Richard
__________________
Fly Fishing is not a sport...It's a way of life.
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#9
03-17-2012, 08:22 AM
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The issue I have now is it seems to run out of gas during wide open throttle. But, I need to check the rpm....see if it's above 3800.
I did also change the fuel line. My 122 has a 3/16" copper tube, and the 124 had a rubber 1/4" line with clamps, so I installed new hardware with 3/16 copper and flared ends ( the 122 is an immaculate well maintained machine, always serviced by CC, so it must be correct). Looks much neater now....but I'm not sure if the line is just too thin. Ofcourse. it is low on gas also, so today I fill up the tank, the change back to 1/4"....see if it solves the starvation issue. Then I'm thinking another possibility....can it have the wrong main mixture screw? or are they all the same? I'll swap screws with the 122 to see if it still idles and has top end power. Junkyard tractors can be a pain.
__________________
Fly Fishing is not a sport...It's a way of life.
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#10
03-17-2012, 09:12 AM
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The 3/16" line is still larger than the hole in the seat in the carb, so changing it to something larger will do nothing. Why did you solder up the holes in the main needle? They are there for a reason, you know...
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