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Yamaha fuel tanks

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Has anyone had a problem with the fuel tanks on '03 models? The tank on my sons ttr 90 keeps cracking. I have plastic welded the cracks but each ride a new one develops in a new place. I had to replace the tank on my '03 450f because it too cracked. I seem to be the only one with this problem according to my Yamaha dealer!!

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The tank on my wife's '02 TTR-125 cracked near the petcock. It was just sitting in the garage and we woke up to a pool of gasoline and the fumes that went along with it.

Scott

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there has been some talk of issues arrising from high temperatures during storage and the resulting gas fumes in the tank, with the one way flow breather valves (on the gas cap) not letting anything out, the pressure builds up and can cause a crack in the tank, this condition seems to be mostly in hotter areas, which i'd say texas and california would qualify..

so what i gather is the fix is to either drain the tank each time, or leave the cap loose to allow for expansion

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