2008 Yamaha 20hp 4 stroke. Would run fine until planned off with wide open throttle. Would slowly start to stumble after less than a minute, and Would almost stall in a sharp turn. Took carb off to clean it and was spotless. Reinstalled and did same thing. Watched this vid and saw the float was about 10 degrees from parallel to carb! Sanded button down till float was parallel. Problem solved. This man is a true mechanic.
Hi Jim, you helped us numerous times with our old boat 2Dive4 and now with this video you continue to help us from our new boat in the Caribbean. Thanks for the video. It's a big help.
i had a carb i could not find specs for float setting .i had spent several hours looking then i watched your video . did what you said an it fixed it .have ask several mechanics an they did not no what you told me.i am not a mechanic but i do a lot of my own work.thanks you saved me $450
Thank you very much - I got my motor working after several fail trials due to the floater adjustment issue - till I watched your video which was very very helpful to me
Have one similar but when float drops the needle hangs, the float is not pulling on the needle. Sanding the black tab I good hack, thank youbfor that, working on a merc 75 4 st. Hate 4 stroke carb motors !! The carbs always seem to have issues.
You may be missing the retaining clip that connects the float to the needle. It is a very fine wire clip, easy to misplace. Four stroke carbs are very different from two strokes mainly because of the smaller jets, but also the lack of oil in the mix. Proper fuel system maintenance is key to reliable four stroke carbs, and unfortunately most people do not keep the maintenance up properly. Water separating fuel filter, (Replaced annually), ethanol free fuel, drain or run carbs dry when not using for a while, and fuel stabilizer are a very good start.
Hello, i have a problem with my carburetors on a 1976 115hp evinrude outboard that leaks when the motor is tilted. I just put in new carburetor rebuild kit and the problem is still there. Not quite sure if that's normal or there's something else I need to check too. The floats are pretty parallel according to my eyes. I throw it in the carburetor cleaner for about 3 hours. When I put it together, the problem didn't go away. This gas leaking was always there when i got the motor. I tried everything I know. If you have any suggestions, please let me know. That would be a great help. Thank you...
I have a 40hp mercury 4stroke an it runs great idle but when i speed it up wide open it bogs bad im thinking i need new floats i did alot of work cleaning the carbs an ran threw the lines an Checked plugs only thing now to change floats
Technically no. But, if your float level is incorrect you can try using a heat gun to warm the plastic of the float to bend to correct height, or if the float level is too low you can very carefully sand the end of the needle that contacts the float to correct the float level. First I would want to be sure to identify exactly why the float level is incorrect.
I just purchased a used Yamaha 15hp and figured I would clean the carb and found this same problem. Thanks Jim
2008 Yamaha 20hp 4 stroke. Would run fine until planned off with wide open throttle. Would slowly start to stumble after less than a minute, and Would almost stall in a sharp turn. Took carb off to clean it and was spotless. Reinstalled and did same thing. Watched this vid and saw the float was about 10 degrees from parallel to carb! Sanded button down till float was parallel. Problem solved. This man is a true mechanic.
You just cured a major headache I've been having with this 2014 Yamaha F20 SEHA. Thank you for your video
Hi Jim, you helped us numerous times with our old boat 2Dive4 and now with this video you continue to help us from our new boat in the Caribbean. Thanks for the video. It's a big help.
Always happy to help you. I am pretty sure life is treating you well in the Caribbean. Thanks for dropping me a note and saying hi, it's been a while.
i had a carb i could not find specs for float setting .i had spent several hours looking then i watched your video . did what you said an it fixed it .have ask several mechanics an they did not no what you told me.i am not a mechanic but i do a lot of my own work.thanks you saved me $450
Thank you very much - I got my motor working after several fail trials due to the floater adjustment issue - till I watched your video which was very very helpful to me
Thank you so much. Been struggling with a 3.5hp Mariner that has the mixture screw sealed. I'll definitely try this.
Amazing, spot on explained, had the same problem on one of my 2006 Honda Bf50 carburettor. Problem fixed with your help.
Thank you.
Thx Man ❤ This one just earned me 1500$ 😀
Thousands thanks from Sweden 👍
Very good video, thank you for posting it; today it helped me with an old float level problem.
Have one similar but when float drops the needle hangs, the float is not pulling on the needle. Sanding the black tab I good hack, thank youbfor that, working on a merc 75 4 st. Hate 4 stroke carb motors !! The carbs always seem to have issues.
You may be missing the retaining clip that connects the float to the needle. It is a very fine wire clip, easy to misplace.
Four stroke carbs are very different from two strokes mainly because of the smaller jets, but also the lack of oil in the mix. Proper fuel system maintenance is key to reliable four stroke carbs, and unfortunately most people do not keep the maintenance up properly.
Water separating fuel filter, (Replaced annually), ethanol free fuel, drain or run carbs dry when not using for a while, and fuel stabilizer are a very good start.
Hello, i have a problem with my carburetors on a 1976 115hp evinrude outboard that leaks when the motor is tilted. I just put in new carburetor rebuild kit and the problem is still there. Not quite sure if that's normal or there's something else I need to check too. The floats are pretty parallel according to my eyes. I throw it in the carburetor cleaner for about 3 hours. When I put it together, the problem didn't go away. This gas leaking was always there when i got the motor. I tried everything I know. If you have any suggestions, please let me know. That would be a great help. Thank you...
How tight do u tighten the float screw down? Looked like not too tight?
Yep. Awesome video.
Glad you think so!
I have a 40hp mercury 4stroke an it runs great idle but when i speed it up wide open it bogs bad im thinking i need new floats i did alot of work cleaning the carbs an ran threw the lines an
Checked plugs only thing now to change floats
Is that same adjustment for two strokes ??
Brilliant thanks
Very welcome
Got a 2013 tahatsu 15hp 4 stroke...can the float be adjusted with only the plastic needle holder (solid needle)?
Technically no. But, if your float level is incorrect you can try using a heat gun to warm the plastic of the float to bend to correct height, or if the float level is too low you can very carefully sand the end of the needle that contacts the float to correct the float level. First I would want to be sure to identify exactly why the float level is incorrect.
Gotcha! Good advice. It's dumping fuel out of the overflow. Needle is fine...carb is clean..
I have the same issue on a 30hp Mercury. Intermittently leaking gas out of one of the overflows. Did you find a solution for yours?
Bought a new carb
Does this work for 2 strokes too? Being parallel with carb body?