Use the following link to Comet Kart Sales to see the three tools you’ll need, http://cometkartsales.com/Clutches-and-Tools/. You might want to try the Classified-parts forum as someone might still have these tools and no longer need. I used to have them but even I may have discarded them after twelve years of no use.
L&T is still in business. Didn’t see the tools listed on their site, but you might wnat to call them or a distributor in your area or order them from Comet. There also are probably many kart shops that sill have the tools on the self, waiting for a home.