mike avad 41 #1 Posted August 8 I have a 1976 B-80 with a K181 8HP engine on the crank shaft there a drove in the crank shaft should there be a key that go's in there is so could someone tell me the size of that or a part number so am able to go buy one Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,046 #2 Posted August 8 105453 is the part number and an ipl shows that 2 are required. Does the pto inner race use one also? https://www.partstree.com/models/61-08k803-b-80-toro-lawn-tractor-1976/14-000-drive-belts-and-pulleys-fig-14a-15/ Found this in some notes 105453 key Square replaces 6507 (1/4"x1/4"x1/2") 1 2 Share this post Link to post Share on other sites
