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We have a yamaha mx 80 and it starts but then cuts out as soon as you give it gas, we really want to ride it around the yard, is there an adjustment we can make?

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Not knowing the year of your bike, I would suggest the following; 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 and the air screw on the outside throat of the carb and spray into the screw holes as well. >
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. Before putting the slide back in the throat of the carb, move the clip on the jet needle one notch lower.

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we have a yamaha mx - tombones49_34.gif

Posted on Mar 30, 2011

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Sounds like fuel starvation, check the flow of fuel fromthe tap by removing the fuel pipe allowing the fuel out by turning the tap to the on position you should have a steady flow of fuel,
Secondly the main jet inside the carb may be blocked or restricted, or the float valve may be stuck closed, as when you start the bike it gets the fuel by the primary jet, and or the choke jet located inside the carb it will run until you open the throttle and give it more air its call for fuel cannot be met and the engine will die. Remove carb carefully dismantle and cleane out the main jet, and check the flow of fuel past the float valve, carefully replace and reassemble.

Posted on Mar 30, 2011

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Maintaining Riding Mowers Regular maintenance can reduce repairs. pagetools_04a.gif spacer.gif spacer.gif
fig_ridingmower_01.gifspacer.gif
Components of a typical riding lawn mower. (click to enlarge)
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It's fun to ride around the yard on the mower, watching scrubby grass (and weeds) turn into trimmed lawn. However, when the grass looks as bad after you mow as it did before, or the mower doesn't want to start, riding mowers aren't as much fun. That's when it's time to put on your Fix-It Club hat and have some more fun.

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