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

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Riobi trimmer It will start and idle under the middle position choke and also work in that position but when moved to the right full open position and I give it gas it dies. What is causing it to die? Ed

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To fix this you will need to take out the small carb and throughly clean it with spray carb cleaner. Then I purchased a carb rebuild kit and replaced three things.
2 gaskets and 1 accelerator pump. The pump was the main culprit and you could tell the old one was worn due to the elasticity being gone in the diaphram.
Put everything back together and it works great.
As a side note, I found out you should use 89 grade gas or higher on these small engines along with a good oil additive like ECHO or Stile. The better gas will not eat up the gaskets or ruin the accelerator pump.

Cruz38

Posted on Jun 02, 2008

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Posted on Jan 02, 2017

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Weed wackier gas trimmer


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Trimmer just idles will not run full speed


check your choke cable for proper function; at full throttle, butterfly valve should be perpendicular to the throttle body. Also check your fuel filter for contamination. Stone should be all one color, and free to follow the fuel supply as you move the trimmer into different positions

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Hi Experts, I have a McCullough lawn edger/trimmer Mac-Pro I. I am having problems staring the engine. I can't remember whether I have to hold the throttle in whilst pulling the cord? Also,...


Yes, the throttle should be in the full in position. When starting, the choke should also be in the full on position.
If you can't tell if it is in the closed or open position, remove the cover that is over the carb where the air filter is and you should be able to see which way you move the lever for the closed or open position and mark it where you can see it. When starting put the throttle full on and the choke also in the full on position. It should usually start and stop right away. Now move the choke to the full off position keep the throttle in the full on position and it should start in 2 or 3 pulls. If it doesn't do the procedure again. While you have the cover off the carb check the air filter and if it is very dirty replace it or clean it off because a really dirty air filter could make it run rough or not start at all. I will gladly answer any questions. Best regards and good luck.

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Hard starting 4 cycle trimmer, 20 to 70 pulls


I got me one of these beasts and I can get her to fire for me in just 3 pulls.
(Oh yeah?! I can name that tune in just 2 notes!!)

Seriously....

Use that primer bulb. Use it with prejudice. Do NOT be afraid of it. What does this mean? Yes. Push it 10 times.

Choke full on.

Full throttle, choke fully on, give it a tug. You should see it hit and give a whitish puff of smoke.

Half choke - Position 2 - Full throttle, another tug. Should fire and rev with you still squeezing that throttle at full. Release throttle and LET IT IDLE at half choke for 30 seconds.

Move the choke completely off, continue to let trimmer idle for at least a minute to warm up the oil and block.

Git to whackin' that yard down. :D I just love my 575ES! (Polesaw attachment for the win)

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Hard start tb475ss troy built weed wacker when i close the cold start lever it starts but its 75 degrees out its like the primer ball is inop but i see fuel moving through the lines when priming did not...


These 4 cycle trimmers need to be primed 10x before a cold start. The bulb will feel *firmer* on the last two or three depressions and you'll know that the carb is primed.

Full choke and and full throttle on first tug should see it hit once with a puff of smoke. Second start attempt should be in choke position two (half choke) and with full pressure on the throttle. Should rev to life on start attempt. Let the engine IDLE for 30 seconds, moving the choke to off at the end of the waiting period. Let engine idle to warm another full minute with no choke, then set to work!

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1 Answer

Starts easy and idles well with choke on full. Dies in run


Open the air adjustment screw a bit more. There's usually plastic piece that stops you from opening it up. I always break off the plastic.(damn engineers) It's not getting enough gas.

Aug 14, 2009 | Craftsman 25cc Gas Line Trimmer

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Stalling out


Generally with two cycle engine as soon as the engine starts the choke needs to be moved to the off or open position. Some chokes have a middle position that lets the motor run until it is warm enough to move the choke into the open position. In other words weather it is a two or four cycle engine the choke is used only to start the engine. If you unit is newer and still does not run well with the choke in the open position, you may need to adjust the hi-speed circuit to a richer one.

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1 Answer

I have a Ryobi trimmer and when I start it will not stay on


Here was my solution:
I was having problems with my ryobi cs30 weedeater also. It would start up fine on full choke, but i could not give it more than half throttle or ever take the choke off or it would stall out. I replaced fuel mixture, spark plug, spark arrestor/exhaust, fuel lines, cleaned carb, and still nothing! I was considering getting a better machine. Then i decided to play with the carb adjustments.(on my cs-30, they are two screws on the carb that have a "L" and "H" next to them) I dont think you can get the specialty tool for adjusting the carb unless you are a repair tech, so i just took a Dremmel tool with the circular cut-off wheel to the head of the specialty screws and made them into "flat-head" screws so i could adjust them with a regular screwdriver (if you dont have a dremmel too, get one!) (As i was cutting into the head of the screws, i also cut into the casing protecting the head of the screws that was in the way, this does not cause any damage to the unit, that casing is only there to keep "un-certified" people from adjusting it for themselves.)
Now to the easy part: The "L" screw adjusts the idle fuel mixture and the "H" screw adjusts the full throttle fuel mixture. turning the screws clockwise make the machine run leaner (less fuel) and counter clockwise makes it run richer (more fuel).
-I started out by turning each screw 1/2 turn counter clockwise and started it up, then as it was idling, i started adjusting the "L" screw as i was moving the choke position to run, after a few full turns counter clockwise of the "L" screw, it was idling perfectly in the run position, then i did the same thing the the "H" screw while holding down the throttle and i got it to run perfectly in the run position. Now it is running way better than it ever has. I hope this helps everyone.
Good Luck!

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