How do I replace the chain sprocket on my Poulan PP4218. I have removed the Snap ring but the sprocket will not move.
Outboard drums (drums on the outside of the clutch) are held on by a nut or e-clip.
Inboard drums are held on by the clutch which is threaded onto the crankshaft. And there is the challange.
***NOTE all chain saw clutches have LEFT hand threads, so, rightey loosey, lefty tightey. (just backwards from everything else)
*** NOTE #2: DO NOT USE AN IMPACT GUN
this will most certainly shear the flywheel key or damage the flywheel !!!!! (after 35 years, you can ask me how I know that, LOL)
1) Use a piston stop to hold piston from moving: THIS IS A MUST !!!
Ok, so you do not have one, let's make one.
a) remove the spark plug
b) insert a piece of recoil rope into the cylinder hole, leaving a tail to remove it by. (rope, large shoe string, anything that is soft, that is aprox 1/4 to 5/16 in diameter to place into the spark plug hole to help the piston to stop it's travel by filling up the empty space. Just make sure you can remove it later)
c) secure the saw (extra set of hands may be needed) and with a suitable wrench on the clutch center, rotate the clutch to the right until piston comes to a stop. With a hammer, tap the wrench to aid in rotation. This can be very difficult, and may take several taps.
d) after removed, inspect and grease the drum bearing before re-assemlby.
e) upon re-assembly of clutch, tighten by hand only, NO hammer required. The force of the chain will tighten the clutch.
f) remove the rope, and re-install the spark plug.
I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae
It has an inboard clutch. Similar to this:
R² Drive Link Inboard Clutch by Drivelink.blogspot.com
http://www.youtube.com/watch?v=YUbSIHMSSP8
The C-clips tend to fly when being removed. Please wear eye protection and exercise care.
If you have removed the C-clip and washer try tapping the clutch drum assembly, it should pull straight off. I suspect a spring inside the housing has failed.
An IPL (exploded parts list) for your saw can be found here:
Poulan.com
http://www.poulanpro.com/node4043.aspx
In the "Type your search query (i.e. product name)" enter "PP4218" Uncheck "Operators Manuals (OM)" Check "Illustrated Parts Lists (IPL)" The clutch detail is the same on all three, item 11 is your clutch drum.
Item 13 is the actual clutch and is a left handed thread. If necessary to remove it you will find this helpful, please watch this:
R² Drive Link Outboard Clutch by Drivelink.blogspot.com
http://www.youtube.com/watch?v=cdqkIuVNUQc
Lou
Let us know how it worked for you. GL
I've thought about your problem, is the chain brake released? If the chain brake is engaged you won't be able to remove the drum. Pull item 36 aft slowly but with some force. It will click when the keeper engages the detent if the brake it is engaged. I think this is addressed quickly in the film. Lou
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It has an inboard clutch. Similar to this: R² Drive Link Inboard Clutch by Drivelink.blogspot.comhttp://www.youtube.com/watch?v=YUbSIHMSS... The C-clips tend to fly when being removed. Please wear eye protection and exercise care. If you have removed the C-clip and washer try tapping the clutch drum assembly, it should pull straight off. I suspect a spring inside the housing has failed. An IPL (exploded parts list) for your saw can be found here? Poulan.comhttp://www.poulanpro.com/node4043.aspx In the "Type your search query (i.e. product name)" enter "PP4218" Uncheck "Operators Manuals (OM)" Check "Illustrated Parts Lists (IPL)" The clutch detail is the same on all three, item 11 is your clutch drum. Item 13 is the actual clutch and is a left handed thread. If necessary to remove it you will find this helpful, please watch this: R² Drive Link Outboard Clutch by Drivelink.blogspot.comhttp://www.youtube.com/watch?v=cdqkIuVNU... Check the IPL for your saw to see if any special tools are needed. There are metal piston stops available, when square (almost never) with the piston top these work well, if not square they have been known to punch through the piston. I suggest a length of starter cord or nylon rope 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. Everyone I?ve ever removed had a left handed thread (tighten it to loosen it). Let us know how it worked for you. GLLou
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