Typical service:

Valve adjustment
Oil/filter change
New spark plugs
New air filter
Replace chain and sprockets
Replace tank
Repair headlight bracket
Service hydraulic clutch

It's always kind of frightening to see things sitting in pieces.

Inside the sprocket cover was 20K miles of crud. Problem is, to get the cover off, you first have to take off the clutch actuator, which is kinda a pain, so this area doesn't get cleaned much. You can't even see the shift rod in the lower right.

Hydraulic clutch actuator - pretty much like a brake caliper. Zip-tied it to keep the piston from popping out and strapped a block of wood between the lever and bar, to prevent my own stupidity.

Before it could be cleaned, it had to be scraped.

Finally, there are shiny parts.

20K miles on the old front sprocket (left). I didn't think I'd ever get the nut off. Breaker bar wouldn't do it. Breaker bar and a 3-foot pipe wouldn't do it. Impact wrench wouldn't do it. So I bought a bigger impact wrench. That did it!

You can see the wear better close-up.

Chain was replaced with the same brand and type. Just for kicks, I laid 'em out on the bench.

Lined up the pins at the beginning.

By the end, the old one was about half a link longer over the course of 120 links.

Lightly used rear sprocket is an aluminum carrier with a steel ring. Looks pretty cool. The old one was aluminum and well-worn.

Back together.

The bike also got a nearly perfect new/used tank to replace the dented original. The petcock (right) is a vacuum type that's prone to leaking past an o-ring and into the emissions plumbing, which opens into the crankcase and mixes with gas and oil. Since everything had to come apart, a new o-ring is a no-brainer. That's the fuel level sensor on the left.

The petcock seals to the tank with an o-ring. This one is kinda used up. The green paint is from the tank.

Petcock apart. It operates off that rubber diaphragm, which was getting a little stiff. Kind of a hinky design. In the end, it got a new, old-school petcock - the kind that requires the owner to turn it on and off.

Obviously, the seal around the tank was a little leaky.

On to the big job - adjusting the valves. Cam cover comes off. It got a good cleaning.

Scary bits inside.

Crankshaft. Rotate counterclockwise only!

Cam and valve shim in place.

Rocker arm slid to the side and rested against the shoulder of the cam. The outside shims were easy to get to. The ones on cylinders 2 and 3 in the middle, not so much.

Reassembled. Amazingly enough, it started right up.

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