Question about 2005 Yamaha XT 125 X

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I would like to know the float level for a dt 125 carb

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The book specification is 22mm +/- 1mm and 1 float sits about 1mm lower at its base.

Posted on Feb 17, 2011


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I have a piaggio fly 125cc and need to know the float height in the carb anybody know this at all would be much appreciated thanks

Hi, Shalene sorry you can't find the first and best tool you ever bought for your Piaggio despair not for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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you may have bad piston rings or the float level in carb is letting fuel to pour into cylinder and it is seeping down do a compression test if compression is good remove carb and clean it and check the float level there are videos on you tube for this good luck

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Bike wont move beyond 60km/hr why?

Hi, Anonymous and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
For more information about your question and valuable "FREE" downloads that you will need please visit the website below. Good luck and have a nice day.
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1 Answer

My yamaha dt 125 won't start I cleaned the carbs

try your reeds they might be fouled they are vary easy to fix just gotta take your carb off to get to them

Feb 27, 2012 | 2000 Yamaha DT 125 R

1 Answer

My DT 125 sputters terribly in midrange rpms. Funny though, when it is about to run out of gas (right before switching to reserve) the power smooths. Wish it could run like that all the time. I know two...

There are three things that could be causing the problems you mention.
(1) You could have a bad four hole washer in your fuel petcock that is causing fuel flow issues. Rebuild or replace the petcock.
(2)You could be have issues with a sticking float needle or an incorrect float level (or sunk float). Clean the carburetor , check the needle for wear, check the float level measurement, see if the float sinks or floats in gas.
(3)You could have a bad gas cap (gas cap vent) that does not allow enough air into the tank fast enough when it is full. Replace the gas cap or unplug the vent in the cap.

Dec 12, 2010 | 2004 Yamaha DT 125 R

1 Answer

1983 rm 125 float level

just make it look lever and straight, nothing should be bent in there, take a different or old junk carb apart and you'll see what i mean, they're all the same.

Nov 25, 2009 | 2003 Suzuki RM 125

1 Answer

Dt 124r wont start

Check if the spark plug is getting sparks.
Check if the spark plug is wet with fuel after a few cranking.
Hope you have cleaned the carb well ..blowing compressed air to its jets and also checked the float level inthe float chamber.

Aug 04, 2009 | 2005 Yamaha DT 125 RE

1 Answer

Float hieght for 1984 IT 490

not sure of the exact height, but if you hold the carb level with fuel hose attached and pushing float up with finger, turn on petcok and slowly lower the float until it is just above horizontal. at this point, gas should start to flow out of the needle & seat.

if float turns off gas too soon, then engine will starve.

if float doesn't turn off gas, then it will flow out of the carb overflow tube.

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2 Answers

Aprilla 125 extrema 1993

You have not mentioned working on the carbs, so I am presuming that this is a 'new' problem.
Your bike has plastic floats in the carb. With age the plastic perishes a little, and the floats fill with fuel and stink. This prevents the fuel being shut off when the float chamber is full..
Open the carb an check weather this is the case.
If not, inspect the needle and seat for wear.
Lastly set the float level.

Good luck


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2 Answers

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This may not apply to your bike but a lot of the smaller engine 2strokes can still run but backfire if they have one broken reed valve.

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