That’s a clever way to remove the clutch boss. On those what most people call (Star) head screws which are actually JIS Japanese industrial standard screws, your supposed to use a JIS driver to remove those. Otherwise you will just destroy them every time.
Yep, that seal does look to be finished and over do for replacement. From the looks of it I’d say it’s probably about time for a top end rebuild and it’s a good thing your doing so. Make sure to leak down test it when your done, I’m sure you hear it a lot but trust me when I tell you, it’s an absolute must.
So will the tors on it but unpluged cause an issue just curious in case i go to start it before i get a new carb or rebuild this oneKen is KenOconnerRacing he is a guy that is well known on this site for blasters in particularly.
As for the tors, it should idle if you have the screw turned in as far as I remember. But I normally delete them because they always act up after time. To delete it you will need a kit. The kit consists of throttle cable, cap and adjuster, idle screw, drill bit and tap. All you have to do to install it is drill a hole in the side of the carb then file/grind down the nub that you just drilled and then tap the hole. Afterwards give the carb a good cleaning.