Question about Ryobi 30 Cubic Centimeter Curved Shaft Gas Trimmer

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I have a Ryobi 700r trimmer - I needs a diagram of all the fuel line hookups

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  • Roy Cagle
    Roy Cagle Aug 09, 2010

    Post back with whether the unit has the primer bulb on the carburetor or it is mounted by itself....try doing a search too on this site for fuel line routing.

  • thomas walker Aug 10, 2010

    The primer bulb is attached to a black round base that clips in place - I would say it is mounted by itself - I hope this helps - Thanks for your help - Tom

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  • Ryobi Master
  • 1,545 Answers

<div id="ms__id6" class="solution-text"><span id="ctl00_ctl00_MainColumn_CenterColumn_ThreadSolutions1_Repeater1_ctl00_lblSolution">This is an ongoing issue for users, and rightfully so. Small diameter line out of fuel tank (has filter in-tank on end) connects to the side of the carburetor that has the fuel pump....that is the cover without the hole in it. Other larger diameter fuel line out of tank connects to the longer nipple on the external purge/primer bulb. The bulb "pulls" fresh fuel from the fuel tank to the carb and then out of the carb to itself, where it then pushes any air/old fuel back into the fuel tank. The remaining larger diameter fuel line in this setup goes from the metering chamber (has cover with writing on it and a vent-hole) side of the carburetor to the smaller nipple on the purge/primer bulb. Years ago on 2-stroke trimmers, primers were not even used,...you choked the carb with a slide lever and gravity let fuel enter the carb from above...a few pulls, a "pop"...slide it off of choke and away you went.<br />If the purge/primer bulb is on top of the carb...small line from carb body to small hole in tank with filter. Larger diameter line goes from the bulb on the fuel pump side of the carb to the larger hole in the fuel tank where the line is held in place with a nylon nipple connector that keeps the line from pulling out of the tank.</span> </div><!-- from fixya rte -->

Posted on Aug 10, 2010

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