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I have a cub cadet tiller its a honda gc ft24 model number 21a-395a756 i replaced the carb last year run it off and on all year during the winter i started it once a week. i went to use it today it will not start, if i pour gas or use starting fluid it will run until the fluid is gone then stops i think maybe im missing some springs do you have a diagram showing the spring set up or did the carb go bad i have gas going to the carb thank you

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  • Anonymous Mar 22, 2014

    Maybe carb problems good gas it just won't run

  • Anonymous Mar 22, 2014

    It hasn't even been used it never would run right



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Hi and welcome to FixYa, I am Kelly.

I think you just have debris in the float bowl and the jet where the bowl nut threads into the bottom of the carb but here is the engine parts manual:

You have to click on manual location and then enter a CAPTCHA script of 4 digits when they appear.

The 2 metering jets are items 19 and 10 on pages 17 and 18 of the manual.

^- I think this is where your problem lies. Simply cleaning with some carb cleaner in the threaded are where the bowl nut threads into the body usually gets them going again. If not you will have to use a thin bladed screwdriver and first remove orifice jet 19 then jet 10, clean them up and reinstall.

Other possibilites: (Noted you said you had fuel to the carb)
1. The fuel tank port is covered in debris
2. Fuel filter Item 27 on page 22 of the manual is clogged.
3. Check all of the lines from the fuel tank to the carb on page 22 to include the breather line of the fuel pump. On this particular engine these lines are known problems. Especially the breather line that drives the fuel pump.
4. The fuel float needle can also have debris in it. Item 9 page 17.
5. The bowl nut itself has debris in it clogging jets 19 and 10 on page 17.

SPRINGS are items 4 and 5 on page 24 of the pdf file. There is also a spring washer item 7 on page 24.

Thanks for choosing FixYa,

Posted on May 22, 2011


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