How do i replace sprocket on echo 370 - Echo 30.1CC Chainsaw With a 14 In.bar and Chain

They have this on the ECHO website. Go to the FAQ page here: http://www.echo-usa.com/faqs/
You can find it by typing in 237. That's the ID # of the answer. Or you can just type in sprocket.

If not a drive sprocket (bar nose sprocket, this is incorrect) A link to a CS-370 follows (may not be your saw), I did not see any special tools listed:
http://www.echo-usa.com/pdf/documentation/CS370_09_040809.pdf
It has an outboard clutch a removal method can be found below. There are 6 different parts catalogs listed, I make the assumption all are similar; I suggest you compare the one the matches your serial number and ensure they are.
All Echo parts manuals can be found here:
http://www.echo-usa.com/documentation.asp
If your saw is not listed type "CS" in the “Model:” window, click "Search" and select your saw from the list provided.
R² Drive Link Outboard Clutch by Drivelink.blogspot.com
http://www.youtube.com/watch?v=cdqkIuVNUQc
1. Check the IPL for your saw to see if any special tools are needed. Poulan (Craftsman, Jonsered, Husky) clutch removal tool part number 530031112 if needed, is under $5 from many sources (look at the visible area between the weights if 2 small round sockets are visible you need the tool).
2. 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 nylon rope (nothing left behind) be used instead of the piston stop (retain 6" ± so you can remove it). Make certain 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. Most (99.9%) clutches have left hand threads (tighten it to loosen it). If a finger nail held in the thread and rotated clockwise comes off the shaft it is a left hand thread. If it pinches against the clutch it is a right hand thread.

If you have more questions or need additional help please reply below and I will get back to you. HTH & Good Luck.
Lou
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