SOURCE: i have a 2001 yamaha wr250f and after running only
Air leak causing a lean fuel/air mixture, bad radiator cap killing pressure in the cooling system, low water in the radiator, plugged radiator, broken water pump, not using premium gas and a spark plug with the wrong heat range.
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SOURCE: yamaha blaster runs but wont rev
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 lower side 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. Install a new stock NGK spark plug and try to start the engine. 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. Before putting the slide back in the throat of the carb, move the clip on the jet needle one notch lower. 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.
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SOURCE: motorcycle dies while riding,like gas is cut off
Check fuel pump. You might have a bad diaphragm.
SOURCE: Yamaha TW 200 starts but won't run.
If the bike has sat for a long period of time without being run - the gas that is sitting in the carb(s) will shellac.. Then the carb(s) would need to be cleaned and "rebuilt"..
SOURCE: My Yamaha Virago runs great till the battery dies.
Sounds like you need to monitor what's going on at the battery. Hook up a volt meter to see if it's charging. Check and clean all connections / plugs. Check connections at key switch. Look over all wiring for shorts or broken wire. Disconnect everything but motor wiring to narrow down the problem. Starter drains battery faster than it can recharge.........
A dead battery will mess up a charging system and a bad charging system will kill a battery.
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