Small Engines (Lawn Mowers, etc.)/ryobi 2 stroke trimmer


Starts and runs for at most 2 seconds, not long enough to pump the primer or spray ether to see if it's a fuel problem.  Would think it would run a little longer on the primer which is working fine, as it would on a 4 stroke.  Checked muffler and it is clear. Wonder if there could be something with the ignition causing such as it doesn't strike me as a carb problem?  Thought I'd get an opinion before wasting my time with the carb which I suppose could be the problem?

I'd suspect a stiff metering diaphragm in the carb.

Do you have a small squirt bottle to use as a primer bottle?  I use a diner style ketchup bottle, the one with the taper/pointy tip, with a little 2 cycle gas inside the bottle.  I use the bottle to prime and keep the engine running by feeding oil/gas mix from the bottle directly into the carb.  Works great and if the engine compression and ignition is alright you can keep the trimmer running for as long as you want.


Small Engines (Lawn Mowers, etc.)

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Eric A. Jones


Lawnmower Repair . Certified Master Service Technician from B&S. Have 23 years experience on B&S, Lawn Chief, Weed Eater, Echo, Peerless, Wheel Horse, Snapper, Atlas, MTD, McCulloch, Homelite and many other numerous brands. Specialize in electrical repair.


Born and raised in the midwest. Started tinkering with engines when I was about 14 on my Suzuki RM-80. I began lawn mower repair at a small hardware store. I knew absolutely nothing. I read lots of repair manuals and met an older fellow who taught me many lessons. I continued working on small engines through high school and paid my way through college working on mowers at the same hardware store. Decided to get away from the midwest and mower repair so I joined the Air Force. I repaired air traffic control electronic equipment and ended up in Hawaii where I got a part time job at Small Engine Clinic. I gained a lot of experience from the Small Engine Clinic and had a blast repairing small engines. I then took the Briggs and Stratton Master Service Technician test and earned my MST. I then traveled to Wisconsin where I attended the factory update training seminar and received formal training. Continued working on mowers part time as I completed 20 years of military. Retired from the military on a Friday and continued in the lawn and garden industry the next Monday.

MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

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