Question about Yamaha TZR 250 Motorcycles

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Yamaha TZR 250 float specs

How do you set the float levels on a tzr 250 and what is the feul pipe layout please

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Hi, Quintinvbs for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "Free" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
yamaha tzr 250 carburetor float height Google Search
http://www.tz250.com/forums/archive/index.php/f-24.html
Yamaha TZR250 1987 Service Manual
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Posted on May 23, 2017

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Posted on Jan 02, 2017

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SOURCE: carburettor float level setting

Usually if the float is adjustable you will set it so if there is a flat surface on top or side of the float it will be parallel with the bottom surface of the carb body when the needle valve just closes (before depressing the spring in the needle)
Jordan

Posted on Oct 03, 2009

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SOURCE: My TZR 250 3ma, leaks

The tap is not the problem, it is working as it should. The problem is that the float needles are not shutting off the fuel as they should. Turn the gas off then remove the float bowl on one carb and check for trash in the bowl. Turn the gas back on while gently lifting the float. Now lower the float. The fuel should flow when the float is lowered and stop flowing when the float is raised. If it still flows with the float raised, turn of the gas then check to see if the mechanic forgot to install the float needle by removing the pin that mounts the float/needle assembly. Most carbs attach the float tang to the needle with a small clip. Is the clip missing? The needle can get out of position and not close properly without it. The float should be light as a feather and nothing inside rattling around. A float that doesn't float will never shut off the gas. If the float is good, disconnect the gas line at the carb then get a can of carb cleaner with a "straw" to direct the spray and stick the straw into the opening where the needle goes and spray into the hole. Trash may be holding the needle open. The spray should clear the trash out. If the float floats and there is no trash holding the float open and the needle kills the gas, the floats are way out of adjustment. Below is a generic float assembly. Please take a moment and rate my answer. Thanks! tombones49_45.gif

Posted on Apr 01, 2011

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Hi, Trevgarrett for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $ 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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I need a carb diagram for yamaha tzr 250 cc motor cycle year 1988 it will not rev with out choke on . blocked jets?


Hi, Rolandwhitfo and the usual suspects are:
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I have 2 pipes one is at the back of the tank its pouring petrol out i thought it was just a breather


More likely a carb overflow pipe. (You should be able to track the pipe back to a carb to confirm this guess. If I'm right, you probably have a problem with the nedle valve in a carb sticking.

I would suggest: Remove carb, remove float chamber, take the pin out of the float himge, remove nedle valve, wash all in clean fuel, blow dry, reassemble.

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Feb 13, 2011 | 1991 Yamaha TZR 250 R

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The moment the bike stands feul runs into the cranck case and then the fun starts... if it starts up, fuel sprays out the exhausts like a fire hose... is it because my fuel lines are in the wrong position...


The floats in the carbs are sticking open allowing the carb to overflow and fill the crank. Disassemble the carbs for cleaning. Also, turn off the gas tank valve when parked.

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