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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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10-02-2009, 01:50 AM
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Motorized Bicycle Senior Member
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Join Date: Jun 2009
Location: Salisbury East
Posts: 56
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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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10-02-2009, 02:02 AM
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Motorized Bicycle Elite Member
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Join Date: Aug 2009
Location: San Diego, Kaliforgnia
Posts: 2,772
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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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10-02-2009, 12:53 PM
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Godfather of Motorized Bicycles
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Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 10,003
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Re: carby adjustment
I wouldn't recommend it.
__________________
If it ain't broke, and you mess with it long enough, it will be.
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10-02-2009, 01:21 PM
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Custom Builder / Dealer
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Join Date: Mar 2008
Location: Los Angeles, CA.
Posts: 4,418
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Re: carby adjustment
Don't mess with the float!!!
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10-02-2009, 01:33 PM
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Motorized Bicycle Elite Member
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Join Date: Mar 2009
Location: ridgway colorado
Posts: 415
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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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10-02-2009, 02:30 PM
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Super Moderator
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Join Date: Jul 2009
Location: Maine
Posts: 5,317
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Re: carby adjustment
Quote:
Originally Posted by VENICE BOY
Don't mess with the float!!!
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aww... I already did
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10-02-2009, 11:12 PM
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Motorized Bicycle Elite Member
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Join Date: Aug 2009
Location: San Diego, Kaliforgnia
Posts: 2,772
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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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10-02-2009, 11:17 PM
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Motorized Bicycle Elite Member
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Join Date: Jul 2009
Location: Mi
Posts: 1,630
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Re: carby adjustment
 Those are Grubee propaganda videos!
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10-03-2009, 05:33 PM
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LORD VADER Moderator
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Join Date: Jan 2008
Location: pampa texas
Posts: 2,673
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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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10-03-2009, 06:38 PM
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Super Moderator
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Join Date: Jul 2009
Location: Maine
Posts: 5,317
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Re: carby adjustment
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