WOW! Really good looking bike. I cannot understand why someone has bought this bike and then did not use it. 620 miles is nothing!
Tires: Metzeler Perfect ME11 / ME77 are also old looking tires.
I have Metzeler Lasertec, but rear tire will not last for 5000km's. I'll change rear to Dunlop Arrowmax Streetsmart.
About sticking front brake. My CB750 had that too after 23 years of no use. Disambled the caliper, removed the pads, pumped out the piston, sprayed the piston with thin lithium grease, pressed the piston in, pumped out again, sprayed a little bit more around the piston and pumped it in-out a little bit more. Lubricated the caliper bracket axis that is of floating type that must be able to align with the rotor.
New pads that had paint I grinded off so they could be fitted without sthicking inside caliper. I put a dollop of copper grease under each pad. Assemble and tighten the allen heads. The small screw with a spring adjusted according to the manual.
I guess that the master cylinder will leak. Time for upgrade kit and replace the seals. Maybe dried brake lines too?
I hope you can keep this time capsule intact.
-One thing you can do is to take photos of all stickers placed on the bike so other will know exact which sticker is placed where and how. Detailed photos of the entire bike will be good information when they are taken on an untouched bike.
