OK! A little rust on a chain is nothing to be concerned with unless you want to go for a ride on it. The stock chain is pure garbage any way and lubricating it just means you get some more miles out of it while you're tossing grime all over the rear end of your beautiful bike and adjusting it regularly. A good quality X ring is the very first upgrade I would do so you can pretty much forget the chain for a lot of miles and not have to grind grease off the ass of you pretty bike.Gary, chain was a bit rusted, i assume never lubed since new. Everything else mint, tits still on tires. Does have a bit of a flat/weak spot just above idle. I've read on here adjust idle mixture screw I believe? Other than that tight and smooth.
As you can see, the hump inside the tank and the lip that goes around the fill hole make it extremely hard to see inside the tank. Most of the rust would be found at the lowest point in the tank which is where the petcock is located. When you remove the tank for cleaning and remove the petcock you will get a much better look at what could be going on. The petcock has two tubes with screens, one is for the main fuel and the second is for the reserve. If there is rust it will certainly be here. PO paid $300 to get it running and you can bet probably all they really did was to get it running. Often times this means adding fresh fuel to the stale, replacing or charging the battery and if it starts they might mess with the pilot screw to smooth it out and get it to idle. The pilot screw is on the underside and between the float bowl and the cylinder so very hard to actually see into it. My opinion is to get the tank clean and with fresh fuel and dose it with an internal fuel conditioner as I mentioned earlier. Run it and allow it to sit over night or longer and run it again. Unless you enjoy tearing into carbs I would not go there until you are sure it is necessary and I would not mess with the pilot screw until you are sure it needs adjustments. Only ever make that adjustment when the engine is at full operating temp. I believe most TWs come from the factory adjusted way too lean just so they can pass emissions requirements. Most tend to run quite well with the pilot screw between 2 - 2 1/2 turns out from bottom.Quick look in the tank looked pretty good as far as rust goes. Couple very small rust areas on metal tube on right side of tank, nothing i could see on bottom of tank but would probably have to lift rear end for sediment to move where you could see it. Does have the dead giveaway varnish smell. PO said he just paid 300 to get it running right again. Looking at bowl screws id say they've never been touched. Looking like a carb/fuel tank clean, and fresh gas. Do they run right/strong with stock adjustment on idle mixture screw? Does not appear to be a plug over mine, can see mixture screw.