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Cs30 ryobi trimer choke problems

My ryobi cs30 trimmer will start at full choke, run above normal rpm's just after that, but if i go closer to half choke it dies. im suspecting it's due to a rupture in some diaphgram in the carb that reacts to something to pump fuel into the cylinder, and maybe the richer mixture just after full choke is all that can sustain it until less richer mixture slows down the vibrations and the diaphgram fails?
i am also getting gas leaking out of the carb's air intake. what do i need to do? am i completely wrong about the diaphgram, and just need a new carb? plumb need to replace trimmer? i dont know.

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Posted on Jan 02, 2017

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SOURCE: Gas Trimmer will not stay started

My straight shaft trimmer will idle but dies when the I pull the trigger.

Posted on May 18, 2008

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Pyrhyc
  • 2028 Answers

SOURCE: Gas Trimmer will not stay started

Many times with a gas mix, after sitting for a while, the mix separates and gums up the carb. Taking the carb off and soaking it overnight in a parts or carb cleaner and running carb cleaner through the tank and gas lines will cure this.

Posted on Jul 02, 2008

  • 1 Answer

SOURCE: ryobi 31cc lawn trimmer carb adjustment

As with all 2 strokes if you have compression and a reasonable spark, you only need fresh fuel with correct oil ratio) and they must go !(as long as you haven't fiddled first and all gaskets are sealing) I start mine by(1) pumping the primer till it is firm,(2) full choke,(3) pull till it kicks ONCE,(4) half choke, pull till it runs,allow to warm up and(5) switch to run (you may need to apply a bit of throttle while pulling as in (4)(or give it a few more pumps if it dies) If all is ok, check that when properly warmed up there is a smooth transition from idle to full revs, if it hesitates it may need the LOW SPEED mixture leaning (clockwise) SLIGHTLY.If it dies the LOW SPEED mixture may need richening(anti-clockwise)(adjust 1/8 turn at a time) Make sure that motor is just peaking at full revs and is on the RICH side of peaking (HIGH SPEED mixture)(this will avoid seizing it Adjust both till it revs cleanly and is JUST rich at full, and idleing nicely and it should start without too much trouble.(If you have fiddled and are lost,-about 2 1/2 turns out from closed on both needles should get you started)

Posted on Nov 24, 2008

#1 Taper
  • 1040 Answers

SOURCE: it acts like it is flooded, starts with choke off and throttle depressed. runs until carb runs out of gas then dies

Yes, Your carburetor sounds like it needs cleaned. Or you may possibly need to purchase a carb. kit for your trimmer if the cleaning doesn't do any good. When cleaning the carb. use a Den Tek Brush, (teeth cleaning brush), to clean the small ports. Also, check the small screen in carb. Can get clogged easily.

Jim

Posted on May 28, 2009

  • 71 Answers

SOURCE: stihl line trimmer starts but won't stay running

check to make sure your kill switch is not shorting and you have the right gap from the coil to the flywheel also if the flywheel sheer pin is damaged in the least this will cause a multitude of problems... it is the timing pin and must be in good shape not damaged or sheered ..any way reply to mrdmburns@cableone.net and i will try to help you through this.... DALE good luck and will wait for reply..

Posted on Aug 29, 2009

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Starting up Ryobi Petrol Strimmer


full choke on , push petrol bubble 5 times then pull starter cord., with luck it will kick in to life after a 20/30 secs put on half choke , run again for 30 secs the no ckoke.

The main problem with Ryobi products is that they flood very very easly. So the more time you try and pump petrol into the carb the more it will flood . If that happenes then choke off and switch off and then just pull starter cord for about 30 secs then switch on and it could start if not prime it again as above good luck

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Gas Trimmer will not stay started


Many times with a gas mix, after sitting for a while, the mix separates and gums up the carb. Taking the carb off and soaking it overnight in a parts or carb cleaner and running carb cleaner through the tank and gas lines will cure this.

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You probably need a slight carburetor adjustment. Try to turn the L mixture screw (the one near the bottom of the carburetor on the air filter side, closest to the engine) 1/8 to 1/4 of a turn counterclockwise. These mixture adjustment screws ( L and H) have odd heads on them and conventional tools won't turn them. I use an automotive type plastic wire connector (around 22 gauge) with a ring terminal end which I can hold. Tap the plastic end of the wire terminal connector onto the head of the screw with a small hammer and this will enable you to adjust the L screw. This adjustment will increase you high speed side and possibly allow it to run off choke in a regular manner.

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Can't get my Ryobi CS30 trimmer started, bought a new spark plug, still won't start. It worked fine last summer, took it out for the first time today, won't start, has plenty of fuel


Is the fuel old or has it been drained and refilled?? Sometimes old fuel will do this. Also make sure the air filter is clean and free of oil/dirt as this will also hinder the starting.

The primer button also is something to check. Push it 7 times, full choke, pull for 5 times, turn to half choke, and the unit should start.

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Yes. It sounds like you need to clean the carburetor. Take the carb. off, disassemble and spray with carb. cleaner. Make sure to clean the small screen in carb. Clean the small portals with a Den Tek Brush, (used for cleaning between teeth). They work great for this job. Reassemble carb. and try starting. If this doesn't cure the problem then you will need to buy a new carb. kit and replace the needle valve, gasket(s), diaphragm, & small screen.

Jim

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I HAVE A MODEL775R RYOBI GAS TRIMMER 31CC IT HAS NO SPARK.


you probably made the mistake of leaving it in the shed over winter with gas in it.
in the carb there is a diaphgram that oumps this fuel in via the motor vibrations.
said diaphgram had been ruptured due to drying gas in the carb. the solver to this is to either have a small engine mechanic replace it or the whole carb or get a new one, and i would suggest you get the cs26 model instead. i have a cs30 and cs26 and i have had less problems with 26. it only has two chokes.
you prime it.
you push lever to start, closing all but a little bit of carb,giving engine much richer mixture.
you squeeze trigger, opens halfway/full, as there are two chokers in the carb, on controlled by lever and another by throttle.basically now you haave half choke.
you release trigger, goes back to 7/8 choke to keep at idle but not running. your ready to go.
on the cs30 its much more complicated:
ful choke
prime 7x.
pull 4x
half choke
pull till start.
wait ten seconds of running at idle rotate to run
good to go. but these guys have porr design. if you take off the back cover and look above fuel tank on cs30, the crank is RIGHT SMACK THERE and not better secured like in the '26 model.
that's what the little circular hole is in it.
anywho, the diaphgram is ruptured, and you probably haven't noticed that in addition you have gas leaking out the carb's air intake.

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Ryobi SS30 trimmer starts fine and runs at when in full choke position to about half choke position. But when I put the choke lever to the full run position, it stalls out. Ryobi ss30 same problem of...


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2 Answers

Stops when given full throttle


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


Here was my solution:
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