Though they will have degraded to “unuseable” state by now. They look fine but they wont have as much grip as a new set of tires and might give out on you in rainy conditions a lot quicker then you’d expect. I would recommend new tires at some point, but you can drive it safely if you are gentle and take road conditions in consideration!
[quote=“Aginor, post:2, topic:8376”] The tank is almost full (can’t remember if that is good or bad) and if there are no leaks – looks at ground – there should be oil and stuff in there.
This is very very good!
Good plan, you can likely get it to crank for a bit, make sure you remove the exciter plugs(spark plugs in non-aviation terms ) first, and crank the cylinders for a bit to get oil to go around without combusting the thing! It’s worth checking the spark plugs too and making sure they have a good spark.
Consider topping off the battery, might be low on water!
I would agree, though oil might be fine for now, don’t flush it yet until you are ready to get a fresh set in, it’s useful for diagnosing problems without wasting new oil!
Brake fluid attracts water like mad, so check that. It might still be fine though. Should be slightly brownish but not murky or dirty. Water looks whiteish.
These things can take a punch, though are you sure its injection? Honda’s from this generation are usually carbed.
EDIT: Wikipedia says carbed: https://en.wikipedia.org/wiki/Honda_CB500_twin
My advice would be to first get it to crank and run for a short bit before going to overhaul and replace everything. Brake pads might be a little stuck but that ought to loosen up after a few days of driving(the piston’s might be a bit dirty.
Work from the fuel tank down, see if the tank selector valve is still okay, see if it draws a vacuum, presume the carbs are clogged though.