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Motorized Bicycle Trouble Shooting Use this area to post problems that may arise that you could use some help in figuring out what is wrong with their bicycle motor and what needs to be done to achieve top performance.

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  #1  
Old 10-02-2009, 01:50 AM
mick29 mick29 is offline
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Default carby adjustment

Can anyone tell me by adjusting the float level in the carby does it change the mixture If it does wich way leans it and richens the fuel mixture thanks mick29
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  #2  
Old 10-02-2009, 02:02 AM
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GearNut GearNut is offline
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Default Re: carby adjustment

It in no way can replace doing it properly, IE: changing the fuel jet but....
Raising the float level can enrichen the mixture.
Lowering it can lean the mixture.

Last edited by GearNut; 10-02-2009 at 02:03 AM. Reason: jet info
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  #3  
Old 10-02-2009, 12:53 PM
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Bikeguy Joe Bikeguy Joe is offline
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Default Re: carby adjustment

I wouldn't recommend it.
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  #4  
Old 10-02-2009, 01:21 PM
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Venice Motor Bikes Venice Motor Bikes is offline
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Default Re: carby adjustment

Don't mess with the float!!!
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  #5  
Old 10-02-2009, 01:33 PM
freewheeling frank freewheeling frank is offline
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Default Re: carby adjustment

the float is what makes fuel availible to the jet, the vacumn of the engine causes fuel to flow up the jet to mix with air flowing thru the carb as long as there is enough fuel in the float bowl yer ok, by making the jet smaller you restict the amount of fuel- leaner, enlarge the jet, more fuel-richer.frank
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  #6  
Old 10-02-2009, 02:30 PM
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BarelyAWake BarelyAWake is online now
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Default Re: carby adjustment

Quote:
Originally Posted by VENICE BOY View Post
Don't mess with the float!!!
aww... I already did
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  #7  
Old 10-02-2009, 11:12 PM
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Default Re: carby adjustment

I had absolutely no choice but to adjust the float level in my carb it was set stupid high from the factory. Almost like some assembly person just put the pieces together and never checked for any proper setting. Quality control? Hahahah! yeah right! I do not think that there really is much at all when these are assembled.
YouTube - Beware of cheap engines - PK50 & PK80 assembly process
YouTube - ENGINE TESTING??? www.enginekitparts.com
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  #8  
Old 10-02-2009, 11:17 PM
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Kevlarr Kevlarr is offline
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Default Re: carby adjustment

Those are Grubee propaganda videos!
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  #9  
Old 10-03-2009, 05:33 PM
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Norman Norman is offline
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Default Re: carby adjustment

the boys on those video's ought to be able to fix your problem!!! at least one got his engine to run and it wasn't even on a bike!! Good way to set the seal in place or what ever he was doing??? Might need a bigger hammer on those leaky seals or a little tight wood ruff key on the crank. I'd like to see more videos of that high quality work, looks like they are having fun.
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  #10  
Old 10-03-2009, 06:38 PM
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Default Re: carby adjustment

Here ya go;

YouTube - skyhawk factory work shop
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