I just received a very nice Super Silette with a Solagon, and since this appears to be the only detailed thread on its repair, anyone cares to tell me how to remove the front element so I can get to the shutter before I try something stupid? My slow speeds are gummy, and the self timer is not working.
It looks like the front element could come out just by unscrewing it, but I'm wondering what's under the beauty ring in front, and if I should try removing it first. Let's only hope my lens has no fungus, I received it this morning and won't be able to check until I'll be back at home tonight.
Ok, Ludo -
Unscrew the front element. Underneath it, there should be a black ring with three notches in the perimeter. One of those notches will have a tiny screw in it, locking the ring in place. Carefully remove that screw and store it in an old film canister or something. Using a fine screwdriver, rotate the locking ring counterclockwise to remove it. The trim ring engraved "Super Memar" will lift directly away.
Once removed, you'll have access to the speed setting ring. Take a digital picture of it, noting where there are tabs coming through the ring. When you replace the ring, these tabs all need to be in the same place. If a tab is left under the ring, everything will be slightly out of whack. You can realign most of them by just rotating the ring back and forth slightly. Anyway, carefully remove the speed setting ring. What you'll expose should look like this:

I generally apply a drop of Ronsonol or xylene (usually xylene in the form of Goof-Off) to any penetration in the casings of the escapements (circled in blue). After dripping in the solvent, reinstall the speed setting ring onto the shutter, making sure all the tabs align. With the speed setting ring in place, you can cock the shutter without parts flying out. Cock it and fire it a few times to see if the slow speeds are coming back. You may need to apply the solvent a couple times. Same deal with testing the self timer: Set it, and see if it's working properly. You may need to help it along if the mechanism is still a little gummy.
Once everything's in order, button it back up, and continue firing it for a while. Test it again after it sits overnight. After a few hours/days, you might find that things start stuttering again. If they do, repeat the process. Once things are reliably operating for a few days, I'll usually go back in and put a tiny pin-drop of gun oil on those same points on the escapements.
That should do it. Good luck with it.
Oh, BTW, 50/50 mixtures of vinegar and Windex seem to soften the lens coatings to where they're easily damaged. Avoid that.
If any of this is nonsensical, email me tomorrow. My wife's feeding me limoncello shots right now...

Scott