Question about Ryobi RCS3535CA Petrol Chainsaw 35cc 35cm/14" bar

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How to remove and replace ryobi 38cc petrol chainsaw spark plug

How to remove and replace spark plug

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  • 2 Answers

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Posted on Jan 02, 2017

  • 42 Answers

SOURCE: Ryobi 18" petrol chainsaw won't start

my guess is that you have a crack or a hole in one of your fuel lines. this is very common in chainsaws and weed eaters because they are used very little and sit for a long time. try checking this and repair if necessary. let me know if this works.

Posted on Mar 08, 2009

  • 2220 Answers

SOURCE: ryobi 40cc chainsaw

Have you checked for spark? Sounds as though your ignition module has quit.
Remove the plug, connect a jumper wire between the threaded part of the plug and the cooling fins, Switch the ignition on, take it into a dark room and pull the starter. You should see a spark at the tip of the plug. HTH

Posted on Sep 17, 2009

  • 4088 Answers

SOURCE: my ryobi 40cc chainsaw wont start, spark at plug

'No compression' usually means serious mechanical problems with the piston/rings, but if this unit has a compression release, then it may be 'set' which reduces compression considerably until the engine fires. Try putting some fuel mix into the cylinder head spark plug hole and reinstall the plug. If it runs for a few seconds, then look into the fuel delivery system (did the compression increase?). Check that the carburetor is bolted tightly to the engine and the fuel lines are intact. Make sure the choke will close all the way and the throttle opens all the way. Make sure that the primer bulb fills with fuel after several pumps. Assuming that the engine ran properly for the people that 'reconditioned' the saw, this unit should not be giving you problems like this.

Posted on Dec 31, 2009

  • 2220 Answers

SOURCE: Ryobi Chainsaw won't turn. removed pull cord

Starter Handle difficult to pull:
1. Remove the starter cover.
· Inspect the flywheel and crankshaft under the starter cover. Are the woodruff key slots on the crack shaft and flywheel aligned and the key intact? If not; Please consider taking the saw to a good local saw seller/mechanic for a written diagnosis before authorizing any repair, if yes continue.
· Does the starter operate smoothly? If yes, reinstall the cover and continue with 2, if not repair the starter.
2. Is the saw equipped with a decompression valve? Yes continue, no proceed with 3.
· Leave the ignition off, set the valve and pull the starter.
· Pull gently to release the valve. Is there a difference in the effort required?
· If yes continue with 3, if no repair or replace the decompression valve.
3. Was this saw perhaps operated in a lean condition (metal transfer from the piston to cylinder wall)? This may be caused by many things including but not limited to; leaky intake connections at the engine or carburetor; leaky crankcase seals; cracked fuel delivery lines; running on gasoline containing no 2-cycle oil.
· Disconnect the spark plug wire and remove the plug. Remove the muffler (clean it and the spark arrestor before reinstalling), hold a light at the plug hole and inspect the cylinder through the exhaust port. Is it smooth and shiny or does it appear speckled with dull gray spots or smears?
· Pull the starter slowly, inspect the piston as it rises and falls. Is it a dull gray without scratches and gouges?
· Hold the light at the exhaust port and look through the spark plug hole, inspect the cylinder above the exhaust port. Is it shiny and smooth or speckled with gray spots or smears?
Please Note: Any spots or smears on the cylinder or deep scratches and gouges in the piston indicate the saw was operated in a lean condition. Repair of this on a home owner quality saw often exceeds replacement cost. A repair estimate by an independent saw shop should be considered.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH

Posted on Apr 01, 2010

  • 1514 Answers

SOURCE: my Ryobi petrol RCS 3540c

Check that the chain is on the right way around. The cutting edge of the teeth on the chain, at the bottom of the bar should face towards you and away from you on the top. It's most likely that the chain is facing the wrong way. If you don't know how to fit a chain look at the video on

If that's not the problem then the chain is blunt and needs to be sharpened badly. You can sharpen it, with a special file which can be got from chainsaw dealers, or take it to a garden tool hire centre and have it sharpened professionally. It has to be sharpened professionally from time to time anyway to keep it cutting straight so if it's that blunt I'd recommend you get done professionally now.

The smoke if it's coming from the chain is caused by overheating from trying to cut with the chain which is too blunt or turned the wrong way. If the smoke is coming from the engine check your fuel. You should have petrol mixed with 2 stroke oil. The saw manual will give the ratio of 2 stroke oil to petrol. If you use too much oil or if it's not 2 stroke it will cause smoke from the engine. Also if you use cheap oil it can cause smoke. It's best to use good quality oil like husqvarna or stihl 2 stroke. These also protect the saw better than the cheap brands you get at car service stations which are really only meant for boats which are water cooled.

Posted on Jan 20, 2011

Testimonial: "Thankyou, I'll check that. It's only about a year old and hardly used so possibly not blunt but chain problems."

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