CD
YES. Tip#1,very important, when you remove your gears, hold it like a cob of buttered corn, by the ends, equally. Do not try to handle it with one hand, either of them,they will want to slip and they'll all slide off the shaft leaving tons of hands and knees time looking for all the pieces.
There is a half ring and a stud on each of the major bearings, don't loose those,they may want to get away too.
The machined cup on the ends. the one with the stud that goes from it to the case to keep them properly aligned has roller bearings in them ,they are set up in pairs.Check those and the race's condition. if okay , small dab of greaseto make bearings stick to race,and reinstall after cleaning.
Check the teeth and contact surfaces on and between gears for chips cracks and other damage.
go to the shifting forks and see if they slide smoothly on the drum, check for rust on and in the drums ,if clean and slides ok leave them in -don't forget to check the fork surface during re assembly to be sure the forks are not warn and sloppy.
Primary chain check the play up and down ,side to side if really sloppy replace.if you taking it out use your peg mounting rod rearmost bottom engine mount, screw it in the threaded hole in the primary shaft in the center of the gear at 5 oclock at clutch view , nut and washer the end and use an old wrench as a slide hammer -gently, be sure to have a handle on this as it also has bearings ,and other fun stuff you won't be wanting to be looking around the floor for.
How slack was the timing chain on break down? If it just fell off easy and had slack,replace while you are there.
Crank bearings should not have excessive shinney spots or gouges in them check the crank for burn marks ,hot spots
connecting rod can have a litttle side to side play at the top, not at the bottom. oil everything for assembly. And have fun
