How to Diagnose Two Cycle/Two Stroke Engines
This article outlines the appropriate steps needed to accurately diagnose your two-cycle lawn equipment engines, walking you through fuel system, ignition system and compression system diagnoses.
How to Rebuild a Two-Cycle Engine Carburetor
This article outlines the steps to rebuild a two-cycle engine carburetor. With the right rebuild kit, you can easily repair the cracked and broken components that prevent your carburetor from performi...
How to Fix the Starter on a Ryobi Trimmer
Replacing the spring in your trimmer's starter assembly is easy with these professional tips, and it will even save you money on parts.
How to Clean a 2 Cycle Engine Carburetor
Read this article for professional carburetor cleaning steps and advice. Learn why you may want to clean your tool's carburetor with or without a rebuild kit.
Discussion
Discussion for the Ryobi 766R (810185404) (41AD766G034) 2-Cycle Gas Trimmer
Carb or coil? I put my trimmer up empty, but now it won't start. Tried new spark plug. Tried spraying starting fluid to see if I could get a hit, but nothing. Would you suspect the coil or the carb?
Hey Guys I am replacing my Gearbox Assembly on my Ryobi 766R. With part number 791-180549. The GA (Gearbox Assembly) is slightly different but I was able to get it on. The only problem that I seem to be having is ether my Flexible Drive Shaft is too short (end maybe worn) or the new GA will not let the shaft of the trimmer to go far enough into the GA because when I start the trimmer the motor runs but the head dose not turn. Any help would be great.
I have a Ryobi 766r trimmer/hedger. There are two fuel lines that enter/leave the fuel tank, and these go through a piece of black rubber. I can easily locate the fuel lines and primer bulb at this web site, but I can not locate the black piece of rubber. Help.
I've got a Ryobi 766r. I need to cut some heavy brush. In the old literature I see a brush blade, part #145873. I can't seem to find it. Is there a newer part number or a different one?
I replaced the fuel lines when they started cracking. I think I attached all three line to the right places but the trimmer is hard to start and stalls when I accelerate. Is there something I did wrong? Or does the carburetor need adjusting?
It sounds to me like the carburetor is plugged. The carburetor can become clogged by dirt or other debris. With your trimmer the carb was likely plugged with pieces of the deteriorating fuel line. If fuel is left sitting in an unused trimmer for more than a couple of months the fuel will begin to breakdown and go bad. As the fuel breaks down it will start to become gel like as well as begin to coat the internal parts of the carburetor with a varnish. The gel and varnish will plug the carburetor so that fuel can no longer flow through it. To get your trimmer running again you will need to either rebuild or replace the carburetor. When you replace the carburetor it is always a good idea to also replace the air and fuel filters. This helps ensure that more debris won't clog the new carburetor.
There is not a carb kit available for the carburetor on your trimmer so it will need to be replaced. The new carburetor is part #791-182062 and is available from http://www.ereplacementparts.com
The spark plug is part #791-610311B and is available from http://www.ereplacementparts.com. It will come to you pre-gapped and ready to install. Hope this helps with your repair! -Mark
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