How to Test a Small Engine for Spark
If your small engine isn't starting, you'll need to diagnose many issues including the spark plug. This video walks you through the steps of how to test for a spark using a spark tester.
Quick Fix: How to Clean a Spark Arrestor Screen on a Small 2-Cycle Engine
This repair article will instruct you how to repair a dirty or damaged spark arrestor on your small engine.
How to Replace the Drive Shaft on a String Trimmer
Learn how to properly replace the drive shaft on your string trimmer in less than 30 minutes.
Quick Fix: How to Replace the Spark Plug in a Small Engine
This article will help you replace the spark plug on a small engine which will help get your gas powered equipment up and running again.
Discussion for the Ryobi 766R (810185404) (41AD766G034) 2-Cycle Gas Trimmer
Post a Comment
Ask a question, answer a question, or post a comment!
Question: 766r Ryobi 2-cycle Trimmer
I recently rebuilt my 766r. New gaskets, plug, carb diaphragms, etc. Cranked it up and it ran great. Now every time I crank it, it runs differently. One day, it will idle fine with the choke fully open and run smoothly. the next day it will only idle with the choke in the half open mode. It's got me baffled. I have tried adjusting the idle jet and idle screw-works one day - the next its back to square one! Any one got any ideas?
Reply: 766r Ryobi 2-cycle Trimmer
Sounds like you are having a great time with your trimmer. We have an article and video on How to Diagnose Two Cycle/Two Stroke Engines. Look this over and hopefully it will give you some ideas on how to get your trimmer running correctly.
Question: Ryobi Gearbox Assembly Replaceme...
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.
Question: Missing Fuel Line Part
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.
Reply: 766r What Cc ???
Question: Fuel Line Routing
I would appreciate a drawing of the routing of the fuel lines to the carburetor for my 766r 2-cycle gas trimer.
Thanks for your assistance.
Reply: Fuel Line Routing
Below you find the link to a diagram showing the fuel line routing common on Ryobi trimmers...
I hope this helps with your repair!
Question: Fuel Line
I am looking for the original fuel line for the Ryobi 766R (810185404) (41AD766G034) 2-Cycle Gas Trimmer.
Reply: Fuel Line
The feed line is part #791-682039 and the vent line is part #791-181086. Both parts are available from http://www.ereplacementparts.com.
Good luck with your repair!
Question: Fuel Lines
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?
Reply: Fuel Lines
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
I hope this helps with your repair!
Accessories for the 766R