Contrary to popoular belief Bench synchronizing carbs is no more complicated than gapping plugs or setting points. Same principle. All you'll need is a very small drill bit or small diameter (1/16" works well) rod that is stiff and striaght (large paper clip straightened out works too, just make sure it can be inserted perfectly straight into the throat of the carb, a 17mm open end wrench ...

Also, I'm assuming the syncing is done on each carb on the older CL450 K1's instead of down the middle with one bolt like this guy is doing on his CB360? How to Synchronize a Honda CB360 Carburetor Thank you! Apr 21, 2011 · The manual recommends that you warm up the bike fully before you start to plug in your carb sync tool. I don't think that's a very good idea because everything's going to be hot, and it's hard not to burn yourself trying to remove screws and installing the fittings to sync the carbs.