Question about Ryobi 30 Cubic Centimeter Curved Shaft Gas Trimmer

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Return fuel nipple is broke from finger pump

Ryobi weed wacker 15" 31cc, model 700r........
The 1/8" plastic line going back to fuel tank is hanging........the nipple moulded in the tank appears to be broken off. I will need a new fuel tank. were can I get one???f

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The part previously recommended is not the correct part if it is the return line that is bad. Return line does not use the filter. If yours is like all the Ryobi units that I have seen you just need a piece (about 3-4" needed, but buy extra.) of 1/8 ID fuel line. You can usually order that from parts suppliers. Hardware stores will not have it. There is a fitting with a hose barb on it that fits through the tank. On the outside of the tank on the bottom there will be a round plastic ring, assuming the fitting is still in place and just the hose split at the fitting. Use a knife or thin blade of some type to pry off ring. It is actually around the hose that is over the barb. Keep ring, you will need again. Now push fitting up into the tank. You may have to trim off the hose that is outside the tank on the barb to get it to go into the tank. Shake tank around and get fitting out of tank. You will see there is a piece of hose on it yet. Remove that piece of hose. Now take the new hose and slide it onto the barb. It must go all the way to the top of the barb fitting so that the hose actually goes into the tank through the hole drilled in the tank. The OD of the hose acts as the seal to keep gas from leaking out of the tank. You may need to put some oil of some type (vegtable oil works well) on the barb and inside of hose to help slip it on and use some pliers with smooth or rounded jaws ( no serrations, will damage hose) to get hose on. Thread other end of hose into the fill hole of the tank and out the hole in the bottom of the tank. Hint: Straighten out paper clip or use small wire inserted into the hole from the bottom of the tank up towards the fill opening. Slip tube over that and use the wire to guid the tube directly to the opening. Pull hose through the tank. When fitting with barb and hose over it reached the hole in the tank it will resist being pulled through. Carefully pull firmly on hose to strech it so the hose/fitting "bulge" pulls into the hole in the tank. Look into tank and see when top flange of fitting is tight agains the bottom inside of tank. You should see bottom of barb outside of the tank with the hose on it. Once in place put the plastic retainer ring back over hose and push up to bottom of tank. It should fit snuggly when you get to the "bulge" area. Cut hose length as needed to fit onto straight tube fitting on primer bulb. Should be good to go. You may find that the other hoses are getting bad also and may want to change them at the same time, as they will probably be ready to crack also. You can reuse filter from tank if it is not plugged, just add a new hose as described previously. Otherwise you can order a new filter with the line already on it. That is the part that was recommended to you earlier. That line goes directly to the carb inlet barb. That barb is also hard to push hose on. Third line is from the return side of the carb to the suction side of the primer bulb. That is just a straight piece of 1/8" ID hose and pushes onto straight tube fittings, very easy to get hose on compared to barb fittings.

Hope this helps. Contact me if you have any questions.

Posted on May 20, 2009

  • bmills4 May 23, 2009

    Need to make a correction to my previous post. The hose needs to be 3/32" ID, not 1/8" ID. Brain was in neutral. Proper hose for older Ryobi/Ryan/IDC trimmers is 3/32" ID x 3/16 OD.

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Go to a lawn center that carriers ryobi weedeaters, buy new nipple,it goes in the tank ,just put one in my tank.push a long piece of fuel line through the tank to the fill hole put the new nipple in line pull it to the hole and used a screcdriver to push it on in the hole with new line already on it,it was easy,

Posted on Jun 13, 2009

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Our septic tank stopped working a bit ago and it turned out that we needed to have title 5 services done on it. Have you checked to see if that would help your issue? Anything is better than having a septic tank that doesn't work. They can be quite hazardous. Septic System Contractors in Hopkinton Massachusetts

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2 fuel lines broke 1 from tank 1 from primer bulb. Line from back of tank to back of carb still there. Which lines go where?


The line that is still there is a return to the tank. The other line out of the tank has a filter on it inside the tank. this goes first to the pump then into the carb. Go buy new fuel line for all of it and replace them. The line still attached is the return. The pick up line goes to one side of primer bulb or other. Connect to bulb and pump bulb. if it pumps fuel out of the tank connect the other side of bulb to carb. If not reverse line and try pumping again. If no fuel flow, bulb or check valve may be defective. Depending on the model you can probably buy new carb, pump, and fuel lines for less than $40.

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<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 -->

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