WWW.bocabearing.com
I buy all my bearings and seals for my echos,husky,ect from here.Measure the diameter of crank,o.d. of bearing or seal,and thickness.Just for example hers the last ones i ordered for one of my engines.
15x35x6=15mm crankshaft diameter,35mm outside diameter,6mm thickness.i think this was the rear seal for echo 61cc twin.this is an old engine that isnt made anymore and they still have bearings and seals because a lot of chainsaws are the same parts.when you look up a part put in the numbers like i stated above in the search bar and youll get your results.great prices and great shipping.