SOURCE: I have a 2006 Yamaha Roadstar midnightstar 1700..
Sounds like it may be over jetted, and running alittle rich. Can you see black smoke if you rev it up? Could be misadjusted floats after the kit was installed.
SOURCE: I HAVE AN OLD YAMAHA SR 125 ITS REVS GO UP AND
Remove the water trap bowl at the bottom of the petcock, (gas valve). Any water or trash in the bowl? Drain a cup of gas from the tank. 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. Remove the two screws on the outside throat of the carb and spray into the screw holes as well.
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Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw 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. Set the idle speed with the idle screw. This process should get you back on the road.
Since you mentioned uneven idle revs, be sure the carb and manifold are on tight and also tighten the cylinder and head. Air leaks can screw up the idle.
Please rate this solution. Thanks speedfreak41
SOURCE: while riding my yz 125 it just died and won,t kick up again
Please rate the solution as a "FixYa" if able. Thanks!
SOURCE: my name is james, i have a 1982 yamaha xt550 that
The first place to look is the Kick stand safety switch,This will cause the problems you are having,If it is going bad or not contacting completely.(You can bypass to test it,if need be )
Check that and then post back if you still have any problems.
SOURCE: yamaha warrior won't start
a yamaha warrior isnt a 2 stroke. they make a street bike nad a four stroke quad. Check your carburator. check your spark plug and check your stator. it may be very minor considering it was running fine then just went out. no noise or anything. you would have heard something if you broke something internal.
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