you can leave it in. the gears will spit it to the bottom it if it gets caught up there but most likely its lying in the bottom of your cases in between 2 casting ribs. the real problem is that its the cush drive for your tensioner. you need to have it there. so if you dont have an extra, youll need to get it out anyway. use grease to hold them in place. i pulled apart my old street motor and found them lying inside. my race bike swallowed 2 of them. i got them back after i split the cases. sometimes they are impossible to get out unless you slit the cases. they can get caught up just about anyplace in there. i mean, its probably better to get them out, but if you dont or cant, i wouldnt worry too much. but you DO need them where they are supposed to go.
jc
jc
