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

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I have just changed the plug, fuel lines, air filter and the primer pump and the timmer states fine but it will not continue to run after the prime is gone. It does no seem to be drawing fuel from the tank. I diconnected the fuel line and the fuel will flow freely. so at this point I am baffled as to where to look for the problem. Greg Dickerson, gdickerson@satx.rr.com

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Prime the system and start the machine...while it is running try unscrewing the gas cap a couple of turns and see if it continues to run....if it does, you have a bad gas cap air valve and filter replace the gas cap. When you replaced your fuel lines did you also change the little weighted fuel filter on your supply line inside the tank??? If not...do so !!! If this does not correct the problem...then you may have ingested some trash into your carburetor that may be partially blocking the fuel flow....a complete carb cleaning may be necessary to correct this....hope this helps ... ;-D

Posted on Aug 10, 2010

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1 Answer

Trimmer won't prime to start


Look inside the tank. Some units have a stone inside that blocks the fuel line when it is tipped a certain way. Might be what's happening here.

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My prime bulb looses pressure and first start is hard. I have to remove fuel line from filter and cover with thumb prime re install then first start takes time.


Does the engine run fine after it starts? Most common problem with primer bulb losing prime is an air leak in the fuel line or primer bulb. Air leaks don't always leak fuel. If there is an air leak between the primer bulb and gas tank there is no pressure, only vacuum. If it is not a major leak it might not leak without pressure but it will allow air to enter the fuel line. If it is a very minor air leak it could allow air to replace the liquid in the fuel line over time, but so little air once it is primer again that the fuel pump can over come it with volume of fuel.

Primer bulbs do not stay firm, as they are when initially pumped up, after the engine is running. There are check valves in the primer bulb that hold pressure in the primer bulb and throughout the fuel line to the engine. Once the engine starts the fuel pump creates vacuum drawing fuel into the engine diminishing this pressure and releasing the check valves. At this point the primer bulb is just another segment of fuel hose allowing fuel to pass through it as the fuel pump demands. The primer bulb functions much better when the outlet side is higher than the inlet side. This position makes it easier for the check valves in the primer bulb to seat and release as needed. If the primer bulb is functioning properly and is positioned with the outlet side higher than the inlet it should not be necessary to cover the end of the fuel hose with your thumb to get it to prime.

If the engine is hard to start after being fully primed there could be a problem with the fuel system on the engine. Some engines are hard to prime once air has entered the system, especially fuel injected models.

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1 Answer

1995 international flat six diesel 466 wont run changed fuel filter losend lines bleed out air wont run squirt eathier starts dies


Make sure you pre fill the filters with clean fuel. Locate the hand primer usually near the fuel lift pump. Unscrew the top till it pops up. Pump repeatedly until it gets hard to pump. You can crack the injector lines while pumping till fuel comes out or have someone crank the engine with the starter while you continue to pump the hand primer. Make sure after it's running the pump is pushed all the way down and tightened back up

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1 Answer

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I'm not familiar with that particular vehicle, but most diesel systems have a primer under the hood. You will need to pump that slowly until you feel some resistance. That will push fuel to the engine. The other pump may not be able to push fuel through until the system is primed.

If that doesn't get you running I would suspect a clogged fuel filter. Most Dodge vehicles have one on the frame. Just follow the fuel lines until you find it. There may also be one attached to the pump primer.

Changing that filter would my next action. Whether the pump is in the tank or added on outside the tank, you may still need to prime the system after the filter is replaced. Air in the line may cause it to stall, just reprime and start again.

Good luck.

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When you say plugs I assume its a diesel w/glo plugs. This could only be a fuel issue; its either dirty or it has water in it or has lost it prime pressure. Dirty or watery can be fixed by draining the tank and changing the filter then flushing the line by opening the bleed screw at the primer pump and pumping it out till its clear/clean. If its the prime pressure then open the bleed screw, pump till there is no air, close the bleed screw and pump until the primer gets too hard to push. Hope this helps.

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primers pull fuel from the carb and dumps it back into the tank, so if the bulb will not prime the chances are the fuel filter in the tank is blocked, pull the fuel hose through the filer hole and replace the filter on the end.

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1 Answer

Model # 358.797180, 200 mph. At first I thought problem was carburetor being gummed up due to being improperly winterized by previous owner. Replaced carb with new, did not fix problem. Also replaced fuel...


The primer is just a small pump that is supposed to pull fuel through the carburetor from the tank supply line/fuel filter. The filter is supposed to be connected into the longer line at the rear of the tank. This lines goes to the carburetor uppermost port and the lower port is tied to the inlet side of the primer pump. Remove the tank side line from the pump during the pump test to make sure that you are not pulling fuel into the pump from the exit line. Try pumping fuel at this point--if nothing happens, swap the port connection at the pump and try to pump again--when correct, it will fill the tank supply line first, then the exit line from the carburetor that goes to the pump and finally fill the bulb. If you don't get fuel with either connection, then you have a leaking fuel line somewhere as you have already replaced the carburetor. Most saws use a rubber fuel line, not clear plastic. Hope some of this helps!

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1 Answer

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The fuel fillter line goes directly to the carb.inlet first
the outlet on carb.
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1 Answer

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Priming the engine(put some gas in the sparkplug hole)..If.Start the engine.If only the gas from the cilinder is burned change the lines prom primer bulb.

best regards savumihai71

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