If you have the left cover off. You can unhook the clutch cable from both the lever on the handle bar and on the worm screw in the cover. The inner cable should slide easily in and out of the housing. If it sldes ok I would lube the cable.
I like to get some aluminum kitchen foil to make a funnel around the upper end of the cable. I then tie the cable up so I can fill the funnel with oil. I like 3in1 oil. Some like motor oil. Fill the funnel, work the inner cable in and out of the housing, refdill the funnel, go do something else, like take the worm screw apart, clean, inspect for cracks in the plastic part, regrease, reassemble. Make sure the ball is in the wrom screw. After awhile check the funnel, work the cable in and out, refill funnel. Eventually oil will come out the lower end of the cable. Now hokk the cable back too the woprm screw lever and the handle bar lever. Loosen the adjuster on the handle bar lever so there is plenty of slack. When you put the cover back on the engine you can properly adjust the clutch.
It's easy. On the cover there is a round chrome cap. pop this cap off. Under it is an adjuster, This adjuster adjusts the freeplay between the pressure plate and adjuster screw. To adjust loosen the lock nut, it may be tight. Once the nut is loose back it off a few turns. Now using a screw driver back the screw off, turn the screw in until you just barely feel resistance. Do this several tiomes to get a good feel of just when the screw gets resistance. When you just feel resistance back the screw out 1/8 to 1/4 turn. I use the flats on the lock nut. Back off one flat. While holding the screw snug the lock nut down. Now at the handle bar lever tighten the adjuster to get 1/8 of free play.
Now try the clutch, It should pull smoothly and release with a bit of snap. It may feel hard to pull at first, you'll get used to it.
If you want to check the shifting, with the bike on the center stand turn the rear wheel forward, as you turn the wheel try shifting. It should shift up and down through the gears without much trouble as long as you keep the wheel turning.
The kick start works through the transmission and the clutch. If you puul the clutch lever in the kickstart won't turn the engine.
The electric starter works directly on the crank so it will work with the clutch pulled or not.