Question about 2003 Yamaha WR 250 F

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How do I remove the hot start cable in the carb on my 2003 wr250f. thanks

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6 months passed but heres an answer any way.its a plastic nut that screws into the top of the carb with the cable attached.its a damn stupid *** design cause if it bends out a bit too much it strips the threads on the nut.soy advice is dont remove it from the carb rather take off the leaver with the entire cable and carb attached.hope this helps anyone else.

Posted on Apr 11, 2011

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Hi, Anonymous and the usual suspects are:
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2. Fuel supply valve/petcock turned off.
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4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
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10. Severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
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Mar 19, 2013 | 2003 Yamaha WR 250 F

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Wr250f overflow fuel in carb


Hi, Anonymous and the usual suspects are:
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Sep 28, 2012 | 2003 Yamaha WR 250 F

1 Answer

Can i remove the whole hot start on my 2003 wr250f


Some riders have eliminated the hot start cable because it makes carb removal and tuning easier. Personally i do not recommend it. If you periodically remove the boot and plunger and clean it, they work well. If you ride in a lot mud & water, do it more often, because debris and water work their way down the cable & boot and try to seize the plunger.
I hope this helps.

Aug 27, 2011 | 2003 Yamaha WR 250 F

1 Answer

2003 WR250F, exhaust gets red hot very quickly?


souds like a lean condition,have you rejetted carb or modified the air box ? or changed exhaust,if so you need a larger main and possible pilot jet.If you only notice it at night,maybe normal if you havn't done any mods....

Apr 06, 2010 | 2003 Yamaha WR 250 F

1 Answer

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this will reduce performance

Jul 22, 2009 | 2003 Yamaha WR 250 F

2 Answers

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if this is a two stroke,then if you have run it out of fuel,there is no lubrication for the piston and you may have damaged the piston or piston rings,check the compression,esay test is remove sprk plug pit your finger hard into the hole and crank the bike over,if your finger gets pushed off with loud crack sound then compression should be ok,but if it doesnt and the preesure is very weak then you will be looking at a top end rebuild,hope this helps

Jun 24, 2009 | 2003 Yamaha WR 250 F

1 Answer

The 2003 WR250F keeps dying.


ALWAYS have a fire extinguisher on hand when working on carburetors.
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the bottom of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw on the outside throat of the
carb and the air screw on the back left of the carb bore as seen from the filter. Spray into the screw holes as well.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Put the rest of the
carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

The carb has a diaphragm fuel primer pump Each time the throttle is cracked open the pump give a shot of gas. This is fine for take off but downshifting can create a rich mix. A rich mix promotes backfire. Just don't crack the throttle.

A “very helpful” rating for this answer? Thanks!

Jun 17, 2009 | 2003 Yamaha WR 250 F

2 Answers

Glowing exhaust header yamaha wr250f


It won't be valve timing or clearance. The fuel/air mix would be the culprit. Clean the carburetor with special attention to the idle circuit. Remount the carb with new manifold gaskets. A manifold air leak will mess up the mixture. Also, get a new spark plug one heat range colder than stock. Hope this helps out!

Please rate this solution. Thanks!

Apr 07, 2009 | 2003 Yamaha WR 250 F

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