Question about 2005 Yamaha WR 250 F

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No rpms=no power

I am told to shorten the throttle stop in the carb to gain more rpms.And to loop the electrical under the fuel tank?

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Don't mess with the electrical wire placements. Wiring has nothing to do with revs. Shortening the throttle stop simply means removing the slack in the throttle line. This can help revs.

Posted on Mar 13, 2009

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1 Answer

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Reserve tube is usually set at a 1 gallon level in the tank, if you only added a gallon to an empty tank,I would fill the tank at least half full, If that doesn't fix the issue then replace the petcock, It's not a carb issue if it runs fine in reserve.

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sounds like fuel mixture adjustment is to rich,if you blip the throttle and rpms drop then rise its to rich,if blip throttle and rpms hang then drop,its to lean,on the under side of carb there are adjustment screws,if they are on backside of carb,between carb and airbox(filter) then its air fuel,to lean mixture turn screw counter clock wise 1/4 turn,if they are between carb and motor then they are fuel air,to lean turn clock wise 1/4 turn.then check.may have to try couple times.carbs may still have plugs installed,they have to be removed first to do this adjustment.

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The bike will not take throttle, refuses actually, carbs are clean and in sync, Bike idles perfectly, but when any throttle is given, the engine is restricted to 2k rpms. Stock jetting, and a slip on pipe.

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1 Answer

I recently purchased a 2002 lowrider with only319 miles on it obviously it has sat awhile. It has a hard time idling on initial warm up and when warmed up giving it a little throttle (not under load) it...

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1 Answer

Broken throttle cable

This may be a real hard job. You will have to remove the fuel tank, If your bike has a large air box under the tank you will have to remove it. Now you should be able to see any cables to the carbs and any clips or brackets that hold them in place. You may have to remove the carb's also - reason will be to gain access to the cable ends, they have a ball that fits into a slot on the carb linkage and can be very tight or hard to reach. First things things first, disconnect the battery. Hope this helps you get started.

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1 Answer

Bandit idles HIGH when hot Just bought the bike! My bandit 1200S, 1997, runs smoothly when the engine is cool. But at hot temps when the bike warms up, the idle increases to 3000rpms. It doesnt want to...

OK.... firstly change the fuel cap, the tank needs to be vented correctly so pressure will equalise. Normally a rich fuel concentration will cause the engine to die not run high. From what your telling me it sounds like the throttle cables are not adjusted properly, if they are too tight the rpm's will not come back to idle. if this is the case you might be able to twist the throttle the opposite direction to lower the revs at idle. For the excess fuel problem, it could be what you say about the fuel cap, another thing will be the Needle and Seat might need changing or the float levels are not adjusted correctly. Whilst your there fit a good inline fuel filter, it will stop problems in the future.

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2 Answers

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