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Hey guys my js750 is playing up have rebuilt carbs and fuel pump but still seems like it runs out of fuel and bugs down any ideas appreciated
 

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Could be float levels, jets not tuned right, piece of dirt in jets, cracked vacuum hose for fuel pump, cracked fuel line. Get a vacuum tester and check fuel pump, check manual on starting point for hi and lo jets, then go from there to tune in, check all fuel and vacuum lines, if that doesn't work take off carb and go thru it again. If that doesn't work, check crankcase seals. Those are a few ideas.
 
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