Question about Ryobi 30 Cubic Centimeter Curved Shaft Gas Trimmer

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What are the correct settings for the low and high speed adjustments on a Walbro WT218 carburetor on a SOLO line trimmer?

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This will generally get you close: 1.5 turns for both the "H' and the "L" needle screws - adjust from there.

Note: Screw all the way in until they stop (do not over tighten), back off by counting the turns. Most trimmers will run at about 1.5 turns and adjusting from there. Consult your manual for more specifics.

Posted on Sep 25, 2010

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Ryobi 725r trimmer carburetor adjustment


Turn both low and high adjustment screws carefully clockwise all the way in - do not overtighten.. Then back out each two full turns. Set the idle speed control for highest setting. Prime and start and let it run and warm up for about 15 seconds - then lower the rpms a tad and then adjust the low end screw for highest rpm. Then reset the idle to lower reasonable level. You may have to go back and forth with those two adjustments till it runs fine at low idle speed..

Then accelerate to highest speed and set the high adjustment for highest rpm. Then go from idle to high speed. If not smooth a small adjustment on the high speed screw is in order. Keep doing that until you get a nice smooth transition form low speed to high speed.

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THe following assume your carburetor is adjustable.

First make sure metering is set at the correct height. Depending on carburetor seat the mixture screws then turn 1-1/2 CCW as initial mixture setting. Once your engine is running and warmed up tune the idle mixture first half between too lean and too rich then do the same with the high speed at full throttle. Warning if the top speed exceeds the design top speed enrich to slow down. To set the max top speed it is best to a tach designed for small engines.

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ok first set you low side to idle once you have that set . set you high side while pulling in on the trigger once you reach your desired setting your done .. note you will have to try this several times

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Hi F Del
Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
If you have aready tried to adjust them then the adjustments below should get it running for you for final adjustment when warm.
Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm.
Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
Alway use the "lightly seated" method if you have not changed the screw settings.
Please take time to rate me
Bud

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1 Answer

Wt 194 settings


Hi
Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
If you have aready tried to adjust them then the adjustments below should get it running for you for final adjustment when warm.
Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm.
Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
Alway use the "lightly seated" method if you have not changed the screw settings.

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1 Answer

What is the high / low carburetor adjustments and the fuel mixture for the UT21566 Homelite trimmer


Hi dcheddy...

Before you remove or try to adjust your low and high speed jets you should always count the number of turns it takes to lightly seat the idle mixture screw and high speed needle adjusting screws.
Be sure to write the number of turns down on a piece of paper so you will know how many turns from the seated position to open the jets when you go to reinstall them, or if you remove them for cleaning or replacement.
If you have tried to adjust them already then this should get it running...then do your final adjustment when the engine is warm.
Normally you will adjust your idle jet to 1/2-3/4 turn open from the bottom seated position.
Then you will re-adjust the low speed of the engine when the engine is warm by turning the idle screw in or out till the engine runs smoothly at idle speed, around 1200 RPM.
The high speed jet is adjusted to 1 1/2- 1 3/4 open from the bottom seated position, after the engine is warm.
Then re-adjusted by turning the High Speed jet adjustment screw in or out till the motor runs smoothly at high speed.
Alway use the "lightly seated" method if you have not changed the screw settings.
Free Answer...Please take time to rate me

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3 Answers

My Husqvarna 128ld trimmer will run but only at low rpm. I cant find a tool to adjust the carb. If I choke it 1/2 it will run at higher rpm, I suspect a fuel problem. It started in an instant.


If it is a newer trimmer it has a little plastic deal on the adjustment screws to prevent adjusttment.(epa). You have to break that off then a screw driver will work. Some are tough, turn hi speed screw counter clockwise it will rev

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1 Answer

Which fuel line "port/inlet" on the Walbro wt-380 goes to the fuel tank? It's on a Craftsman 25cc Gas "Weed Wacker" Line Trimmer purchased in 2002. It has Walbro WT-380 carburetor with external primer...


Usually the line with the filter on it that comes from the tank goes to carb. inlet first which is most likely close to the bottom side of the carb.nearest to the engine,then the outlet or return line on the carb.goes to the inlet side of the primer and the outlet side of the primer goes back to the tank. The primer draws fuel through the carb to the primer to the tank if its not? then correct the line connections until it does

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1 Answer

Chain saw runs on full choke and a little on fast idle. Will not stay running, won't idle.


Sounds like a carburetor issue. Chain saws get the &**^% beat out of them during normal use.

This may just be a fuel jet adjustment if the carburetor has one. Sometimes there is a low speed jet and a separate high speed carburetor jet. Check for both. Also, check to see if the carburetor is loose - like I said, chain saws usually see some pretty rough service and things can loosen up.

If no joy on the above, you may need to clean the fuel tank, the fuels line, and the carburetor. This requires taking the carb apart so if you aren't familiar with this kind of work, take it to a shop.

Also, make sure the fuel mixture being put in the saw is correct

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