Question about Ryobi Chain Saw. 20 in. 46 cc Gas Chain Saw RY10521

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How to remove clutch from ryobi 20 - Ryobi Chain Saw. 20 in. 46 cc Gas Chain Saw RY10521

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Remove side cover bar and chain clutch may use a special tool to remove

Posted on Oct 27, 2012

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1 Answer

How do I remove the clutch cover from a Ryobi chainsaw?


There are two nuts that hold the clutch cover and chain bar in place. The same nuts you would loosen to adjust the chain tension. Once those are taken off the cover, bar and chain can be removed.

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hello sir, ryobi trimmers and other models removal of the bell housing,removal of the metal bell housing,or clutch drum, on models 780R & 790R, here is what you do. after removing the trimmer & shaft assembly.remove the spark plug insert a screwdriver in the cylinder to keep piston from moveing. to remove the bell housing twist off the spring and using a T20 TORX screwdriver unscrew the retaining screw in the center of the bell housing (normal r/h thread) . push down firmely try not to strip screw head . you should be able to remove clutch housing.remove clutch using a pair of channel locks,works for me, (normal r/h thread) you should be able to remove front engine cover to repair what you need to.coil,pull stsrt, hope this works,. this solution applies to all trimmers with clutch removal~~~hope this helps,,any comments welcome,thank you. 11

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remove spark plug put a piece of rope in hole to stop piston from moving there is a torx screw in center of clutch bell where drive shaft would go re move screw to remove bell use large channel locks or brass hammer to remove clutch assm still with rope in spark plug hole hope this helps

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How do I remove the clutch rotor assembly on a ryobi 720r?


I have the same model, I inserted a large screwdriver on the inside to stop the rotor assembly from spinning, then I used a pipe wrench (but channel lock pliers would probably work better) and then w/o much effort, I easily turned the wrench counter clockwise to loosen.

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1 Answer

Chain dies under light load, engine running ok


It sounds as though you have abraded away the clutch face. I’d try a local saw seller/mechanic, they may be able to adhere a new face to your existing parts.
I went here:
Homelite/Ryobi.com
https://www.gardnerinc.com/recons/disclaimer-lg.php - Agree; Choose “Product Line”; “Select OEM” & “Select Catalog” both to “Homelite Consumer Products”. A drop down list appears; self explanatory from here.
The numbers Homelite & Ryobi use don't match the numbers everyone posts. A careful inspection of your saw should find something that matches.
Chose “38cc 16" Chain Saw UT-10927” and on the “Clutch – Chain Brake – Drive Case Cover” detail found; item 20, clutch, pn984894001, $15.47; item 21, sprocket and drum assembly, pn984640001, $18.46

Yours is an inboard clutch but it must be removed, the outboard clutch video will help.
R² Drive Link Inboard Clutch
http://www.youtube.com/watch?v=YUbSIHMSSP8&feature=PlayList&p=4A4A1DF66590854E&index=0&playnext=1
The C-clips tend to fly when being removed. Please wear eye protection and exercise care.

R² Drive Link Outboard Clutch
http://www.youtube.com/watch?v=cdqkIuVNUQc
  1. Check at the IPL for your saw to see if any special tools are needed.
  2. A length of starter cord or nylon rope may be used instead of the piston stop (retain 6" ± so you can remove it). Make sure the piston is near the top of the cylinder before feeding the cord or it can fall through the exhaust port and damage the piston as it rises.
  3. It is probably a left handed thread (tighten it to loosen it).
    Let us know how it worked for you. GL
    Lou


Oct 09, 2009 | Homelite Garden

1 Answer

My ryobi chainsaw rcs 2040 keeps stopping but motor is still running, chain not moving!


RYOBI----- with the motor running at high revs the chain stops indicates that the sprocket behind the centrifugal clutch is worn out or the centrifugal clutch itself ,or the clutch shoes are worn out the way to tell is to remove the bar and chain and have alook where the chain was conected to the saw, i think you will see the sprocket is buggered and as that is attatched to the clutch drum that will have to be replaced along with clutch springs and shoes, i think you have been running the chain a bit too loose or not running it at realy high revs ,which is what they are designed to do ,cme back to me if you feel the need

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1 Answer

How is the clutch rotor assembly removed from a ryobi 720r trimmer


on my 767r there are 4 cap head screws on a funnel shaped piece that connects the shaft to the engine. Once removed you'll have access to the clutch

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2 Answers

The pull rope broke on my ryobi 705r/725r gas trimmer. I have all the screws off but it seems to be held on by the center shaft that spins. What do I do now?


I have the same issue of clutch removal on a Ryobi 725r. Actually the clutch finally died after many years of use.
Instead of using a screwdriver to hold the piston I recommend using a piece of clothesline rope. It will be easier on the internal components and won't scratch up the cylinder walls or piston. Just be sure to leave a small amount hanging out of the spark plug hole so you can pull it out afterward.

Apr 15, 2009 | Garden

3 Answers

Ryobi Chainsaw - PCN 4545


Ryobi boasts a two year warranty. Have you contacted anyone about a warrantied repair?

An IPL (expanded parts list) for your saw with any oil system detail can be found here:
Homelite/Ryobi.com
https://www.gardnerinc.com/recons/disclaimer-lg.php - Agree; Choose “Product Line”; “Select OEM” & “Select Catalog” both to “Homelite Consumer Products”. A drop down list appears; self explanatory from here.
The numbers Homelite & Ryobi use don't match the numbers everyone posts. A careful inspection of your saw should find something that matches.

Oil System Plugged.
Remove the clutch cover, bar and chain. Clean the oiler hole and channel. Start the saw and see if it oils when revved up. If yes reassemble your saw.
If no a blunted, hooked piece of wire can be used to pull the hose in the oil tank out. I recommend the filter be replaced. Work your way through the linkage cleaning and replacing any defective parts as you go. Carefully check the hoses for cracks especially at bends and connections. If equipped with an oil pump it is usually behind the clutch (clutch is probably left handed thread). Please make extensive notes & some digital pictures will help during reassembly. GL
Lou

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Ryobi model 780 string trimmer clutch removal


Using a small but long screwdriver, remove the screw attaching the clutch assembly to the shaft. The screw can be found by looking down hollow shaft of clutch assembly.

Jul 23, 2008 | Electrical Supplies

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