Question about Ryobi 15" Electric Factory Reconditioned Trimmer (ZRRY41002) - Factory Reconditioned

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Ryobi 790r how do i replace the gas line

I have replaced the filter gas line and i am having a hard time replacing the return gas line. What can i do? I currently have stuck the gas line back through the line and the gas is leaking from the line that needs to be replaced.

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2 Suggested Answers

jakeslimco
  • 56 Answers

SOURCE: Gas leaks

figure out where it's leaking from.. and fix it :/ or provide a little more detail on the issue

Posted on Aug 26, 2009

Testimonial: "You were right, remove cover-more rotted fuel lines, plus finger pump."

rycgl
  • 1545 Answers

SOURCE: I have a Ryobi 790R "E Z" and need to know how to

It is not too hard. Just make sure to cut the new fuel filter line long enough so that you can get ahold of it inside the fuel tank to install the filter. The fuel return line only has to go into the tank 1/2" or more to do it's job, so lenth is not a problem unless you wish to install one of the little nylon connectors on it's end so it doesn't pull OUT of the tank. That is optional.

The small diameter line out of fuel tank (has filter in-tank on end) connects directly 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. Again, on the primer bulb, the longer nipple has a line going directly from it to the tank. This is the return line. The shorter nipple on the bub has a line from it going to the metering chamber side of the carb. 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 sometimes the line is held in place with a nylon nipple connector that keeps the line from pulling out of the tank. Otherwise, the line should enter the tank for about 1/2" or so

Posted on Jul 20, 2011

Testimonial: "The information given was very helpful."

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1 Answer

I have a Ryobi 790R "E Z" and need to know how to


It is not too hard. Just make sure to cut the new fuel filter line long enough so that you can get ahold of it inside the fuel tank to install the filter. The fuel return line only has to go into the tank 1/2" or more to do it's job, so lenth is not a problem unless you wish to install one of the little nylon connectors on it's end so it doesn't pull OUT of the tank. That is optional.

The small diameter line out of fuel tank (has filter in-tank on end) connects directly 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. Again, on the primer bulb, the longer nipple has a line going directly from it to the tank. This is the return line. The shorter nipple on the bub has a line from it going to the metering chamber side of the carb. 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 sometimes the line is held in place with a nylon nipple connector that keeps the line from pulling out of the tank. Otherwise, the line should enter the tank for about 1/2" or so

Jul 19, 2011 | Ryobi Lawn Trimmers & Edgers

1 Answer

Need a repair manual for a Ryobi 790r fuel line diagram


Here is a page that will take you to a download of the exploded view of the trimmer ..
http://safemanuals.com/user-guide-instructions-owner-manual/RYOBI/790R-SERIALS-810046371-THRU

on the right side there is a place to select the download .

Jun 02, 2010 | Lawn Trimmers & Edgers

1 Answer

Ryobi 725r leaks gas from air filter and will cut out after starting up


This is a problem with most ryobi tools. From what i've read over time the gas lines shrink and need to be replaced. You'll need to replace both the lines coming from the carb to engine and the one connecting to your primer bulb. I hear there is a kit that contains both the primer bulb and fuel lines for this exact problem.

Apr 21, 2010 | Ryobi Lawn Trimmers & Edgers

1 Answer

I have a 790r and the detent pin on the lower


That pin should be the same as other Ryobi trimmers. Find one for one of them and compare. Lee

Sep 15, 2009 | Lawn Trimmers & Edgers

1 Answer

Gas line cracked and nipple fell back into tank ..how do I remove gas tank to replace gas line and nipple????..ryobi 725r trimmer


Empty the tank by dumping into a can or something. Shake the trimmer around until the "nipple" falls out. Get a replacement fuel line and follow their instructions. When yoou put the tube back into the tank, have something that you can guide the line through the hole with. I used a small hex wrench. If you cut the tip of the tube at a sharp taper, it will be much easier to start through the hole. You might think of replacing the return line as well. You should not have to remove the tank if you expose the carb and remove the air filter...Good luck...Lee

Aug 02, 2009 | Ryobi Lawn Trimmers & Edgers

1 Answer

RYOBI weed eater.hard to start. starts then stops


I have a ryobi doule line bought in 1997..Had same problem put new gas cap on and problem solved..could not get air in....

Aug 01, 2009 | Ryobi Lawn Trimmers & Edgers

2 Answers

Ryobi 725r Fuel Line replacement


form a gasket silicon gas resistent at any auto parts store about $6

Jul 06, 2009 | Ryobi 15" Electric Factory Reconditioned...

1 Answer

Replaced new gas line, new primer bulb, new gasoline. need to find out if gas line routing is correct / trimmer will start, but very hard to start, clean air filter. carb never been adjusted since new.


Line from tank with the filter on it is the supply line and goes to the carb inlet fitting. This is typically on the "bottom" of the carb (with the tank being up) and will usually have a fitting with barbs or a bulge on it to ensure a tight fit. The other fitting on the carb is the return line and is usually a straight tube fitting with no barbs. That line goes the suction side of the primer bulb. The third line goes from the outlet of the primer bulb to the return barb fitting in the bottom of the tank. Fittings have to be removed from tank to properly install the new hoses on them. Remove retainer ring on outide of tank and push fittings into tank, then shake out of the fill opening. More details on replacing hoses are listed in another post about Repairing Ryobi trimmer.

Have you checked the spark plug?

May 12, 2009 | Lawn Trimmers & Edgers

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