Question about Ryobi 15" Electric Factory Reconditioned Trimmer (ZRRY41002) - Factory Reconditioned
Need ryobi 31cc fuel line diagram
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Posted on Jan 02, 2017
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.
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.
Posted on Jul 10, 2010
SOURCE: RYOBI 725R FUEL LINE DIAGRAM
I just rebuilt my 725r. I don't have a diagram but I can explain it. There are two lines coming out of the fuel tank. The line closest to the rear is the fuel feed and has the in-tank filter (these are available for replacement). This line goes through the lower case hole of the air filter housing and attaches to the bottom of the carburetor. The line toward the front of the tank attaches to the longer/lower fitting the primer bulb and is the return. The line coming off the shorter/upper fitting of the primer bulb goes through the upper hole of the air filter housing and attaches to the top of the carburetor.
FYI also, the forward carburetor screw is the low idle adjustment & the rear, the high-speed mixture. The original oil mixture spec called for 32:1
Posted on Jun 27, 2009
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