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Ryobi 790r gas trimmer

The fuel pressure drops to nothing while in use and dies....then it semms to not want to prime again suggestions ????
Also want to check the mixture numbers again

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I can think of three possible causes that would be a good place to start looking:
- clogged tank ventilation, causing vacuum in the tank during use (check for this when opening the gas tank cap, you should hear a "suction sound" and the engine should prime and start afterwards)
- clogged fuel filter
- fuel filter/ fuel hose is not moving freely inside the gas tank causing it to **** air in some operating positions.

Good luck!

Posted on May 28, 2009

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Posted on Jan 02, 2017

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