Ryobi 775r string trimmer problems

mcoley1May 23, 2010

This trimmer will run for about 3 seconds then dies. I replaced the fuel lines (not the filter) and the primer bulb. Also, the carb was quite dirty with some crusty stuff in it. I disassembled and sprayed it with Gumout and blew it out with compressed air. I think it's clean but, there's a diaphram in there that seems a bit stiff. Also, when I pump the primer bulb, I can see a trickle of fuel in the bulb but it does not fill up with gas. Shouldn't it?

Thanks

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