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my 1985 gs700 runs than will just stop getting fuel .I than take off air cleaner spray fuel down carbs ,get it running again and it will run 10min.,20min. 1hr you never know when it stops i do the same thing again and it will run.I right now am stuck to not riding far from home or carrying a spray bottle of gas either way sucks. I don't want to have to pay a lot to fix if it is something simple .thank for any help

Could be the vent for your gas tank may be blocked.

the last post is a definite possibility, also check the petcock if it has a built in screen (which I think that year does).