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Mikuni carb float adjustment - Motorcycles

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  • paul
    paul Dec 05, 2013

    Hi brian cornine, I want to help you with your problem, but I need more information from you. Can you please add details in the comment box?



6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 3567 Answers

SOURCE: need setting for carb. adjuster on bottom of carb

Turn the adjusting screw all the way in until it LIGHTLY seats. Now back it out one and one half turns. Do the same adjustment for the throttle screw on the right side of the carb. You are now back to the stock factory settings.

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Posted on Sep 20, 2009

  • 3567 Answers

SOURCE: How do I adjust a Mikuni roundslide carb. Thanks

Turn the air screw and the throttle screw inward until they LIGHTLY seat. Now turn each of them outward one and one half turns. This is the factory setting. You might want to clean the carbs. After cleaning, before you put the slide back into the carb, move the clip on the jet needle downward one notch. This will richen the fuel mix and help with the bog.

Posted on Dec 11, 2009

Testimonial: "Thanks for your help. Steve"

  • 32 Answers

SOURCE: carbs leaking

all carbs have a cv type carb,with a big diaphram for the slide.real easy work on.if you have any mechanical knowledge.get a manual if not go on internet,and plenty of vendors for *** bikes that sell factory parts look up yours,and the carb will give you a breakdown of it.harley does not have any parts look up like *** bikes.sound like the carb needs cleaning or needle and seat is wore out

Posted on Mar 27, 2010

  • 8 Answers

SOURCE: twin mikuni carb adjustment

You can make a duel carb sync tool for about $2

Here is a link to a walkthrough for making the sync tool


Here is a link to a walkthrough for doing the carb sync


Don't worry about the air-fuel mixture. It doesn't need to get adjusted.

Posted on Oct 14, 2010

  • 3513 Answers

SOURCE: Our Yamaha ttr 125 2001


Please check the bellow link to know a detailed idea related to your issue, you will have an in-depth knowledge:-

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Posted on Feb 25, 2011

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1 Answer

Mikuni bs32ss doing a carb sync. Where to attach vacuum hose and which screw to adjust. Even the "manual" doesn't identify which screw or where to attach hose. Pictures would be nice. Thanks

Each carb has a small vacuum port on the side above the float bowl, you adjust the idle stop screw to set the tune and sync the carbs. Leave the air fuel mixture screws alone.

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How do I adjust the float on my 2000 big bear carb...Carb is a mikuni 5fua L2

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Vm26-606 brand new out of the box, fuel pouring out the float overflow tube, tried adjusting the float with no luck. please help

Hi, Andrew take the carb apart and use a magnifying glass if necessary on the needle and seat it nay have contamination or defect from Mikuni otherwise the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
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1 Answer

I need to know the proper tuning of ucal mikuni carburetor with mixture adjusting screw on bottom of cabr (beneath float bowl), an idle adjust screw and pilot screw (hopefully pilot fuel screw since s

Why did you need to clean the carb? Routine servicing of the aircleaner would keep the carb clean for life. The pilot screw should be 1.5 turns out approx. with a small adjustment either way. Idle speed is set to a smooth low idle.If this doesn't fix it have you got something in the carb not replaced correctly? The float needle/float assy? How did you clean it? Have you introduced fluff/dirt into the carb and did you blow it clean with an airline?

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What is carb float height on 34mm mikuni carbs

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1 Answer

Adjust mikuni carb float

Pull the float bowl and float bowl gasket off the carburetor.
Place the carburetor upside down and let the float rest against the float needle.
Measure the distance between the gasket surface located on the bottom of the carburetor to the edge of the float. On a 24 mm Mikuni card, the distance between the gasket surface and the float should be 1 inch. On a 20 mm Mikuni carburetor it should be 7/8-inch.
Bend the metal tab on the float that rests against the float needle. Bend it towards the float needle if the measurement is shallow and away from the needle if the measurement is too much.
Use a pair of needle-nose pliers, making very small adjustments to the metal tab and then recheck the measurement.

Nov 20, 2013 | 2006 Yamaha Road Star Midnight Silverado

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