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Can ?nybody help, my bikes running lean, isn't getting the fuel properly. Runs ok with a bit choke. How do i adjust the fuel on it

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  • Motorcycles Master
  • 3,519 Answers

Hi George:
Make and model would help.
If equipped with mixture control,
Back the mixture screw out about 1/4 turn and give it a try.

Posted on Apr 29, 2015

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Posted on Jan 02, 2017

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SOURCE: Bike won't stay running

Have the carburators cleaned. this is the first step to ensure there isnt any dirt in the carb.
2nd. Jets should be standar.
3rd. The Fuel/Air screw or knob should be properly set. This is usually 2.5 turns outward from full close. Check for the manual for the proper opening.
4th. Idle knob maybe set too low.

Posted on Mar 15, 2009

  • 3567 Answers

SOURCE: My 125cc single cylinder (pulse adrenaline) cuts out at junctions

Since the bike is new, chances are strong that fuel IS the problem.
Also chances are that the carb is perfectly fine. Since the bike is new I'll bet yoy have washed it several times already. The dealer may have washed it also. Fuel is the problem because bikes do not run well on water.

Drain the carb. Remove the water trap bowl on the bottom of the petcock, (gas valve). Look at the gas in the bowl. Any water in the bottom of the bowl? Drain a cup of gas from the petcock. any water in the cup? I am very hopefull this will fix the problem. With a new bike and a clean carb and fuel system not much else should be wrong.

Posted on Mar 21, 2009

  • 3567 Answers

SOURCE: Tuning problems with 1985 Honda CR125

Remove the water trap bowl at the bottom of the petcock, (gas valve). Any water or trash in the bowl? Drain a cup of gas from the tank. Any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray all the little airways and fittings in the carb. Remove the two screws on the outside throat of the carb and spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.


Please rate this solution. Thanks!

Posted on Mar 29, 2009

  • 5 Answers

SOURCE: bike will not idle witout having choke on a bit

I have a supermagna and used fuel stablizer once and it wasnt fit it gummed my carbs up,ive cleaned mine often and it isnt rocket science,remove the tank airbox assembly,loosen up the boot flanges that hook the carbs to the motor(ones on carb)then remove the carbs,then the cables,choke and throttle,do not remove carbs from assembly(leave all 4 together)remove the bottoms and tops of a carb,removefloat and jet,then remove all the brass jets and clean them so you can see through holes,,blow out all the holes in carbs,and reasemble,works for me every time,about two hours to do,good luck

Posted on Apr 05, 2009

  • 226 Answers

SOURCE: 1984 aspencade starts w/choke and revs up, runs smooth. Take off

My 'wing won't run unless it has been warmed up some. I would suggest that you r&r your carbs to make sure the jets in the bottom are working correctly. They tend to get plugged up, especially after sitting & the aluminum flaking off inside... Rick

Posted on Apr 14, 2009

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