Just a thought Krisma, Most of the time the engine comes from the factory with NO LUBE whatsoever. The bucking bar takes a lot of spinning and pressure and without a good greasing it will grind down. This will make you lose your clutch little by little, or sometimes slightly quicker. I've seen bucking bars ground down so far that there is no chance at all of adjusting the clutch properly. When installing the bucking bar, first, make sure the bearing is still in place. Then, fill the hole it slids into with heavy grease. Any extra grease will be pushed out and you wipe it off. Next, Apply a good amount of grease to the flat of the clutch arm where it hits the bucking bar. I always put an extra dab on the end of the bucking bar also, just to make sure.
Checking the lube points on your engine should be a monthly thing, or perhaps more if you ride a lot. So as long as you already have the grease out, apply a SMALL amout of grease to the clutch gear and the small crank gear that drives it. TOO MUCH and you'll sling it onto your clutch pads and thats not a good thing. So, like I said, a LITTLE grease.
Next, if you're real good, try to get a SMALL amount of grease into the small clutch bearings. Once you have the clutch plate off you can see them behind the press ring that holds the clutch together. Personally, I'm not that good and I just put a drop or two of heavy oil on it and help it work itself in. Grease is better, oil is better then nothing. I do this to all of my engines and have never had as many clutch issues like most people do. The only thing I have to do is change the pads once in a while. A lubed clutch will last a LOT longer than a dry one.
Big Red.