New crush washers #9
Yamaha 01 Fork fluid or equivalent
Fork Seals #21,22,23
Motorcycle jack or Front Head Stand (not the one with pins or fingers that hold onto the bottom of the fork)
Sockets and allen wrenches
Spring compressor tool
Small screw driver or pick
You can actually leave the forks in the triple tree clamps for this.
I would recommend changing out the seals while you're in there as well.
Lift the rear of the bike with the rear stand. Lift the front of the bike so the forks hang freely.
Unbolt fender, brakes, and remove wheel. Directly on the bottom of the fork there is an allen bolt, remove it to drain fluid and release the cartridge. This bolt may be a little bit difficult to move. The whole cartridge will want to spin with it. I used a 3/8" to release it.
Once bolt removed, move fork up and down to drain cartridge.
Next remove the cap at the top of the fork (the larger hex). Once that is loosened you can remove the cartridge.
You will need to use the spring compressor to gain access to the retainer that holds the spring. Remove retainer and replace spring. Install in reverse order.
Fork Seals, CAREFULLY pry the outer dust cap off. Remove seal retaining clip. Make sure the bike is fully supported and sturdy because you will want to use the bottom leg like a slide hammer to pop the old seal out. Place new seal on bottom leg and reinstall into the upper fork tube. Using a seal driver carefully drive the seal into the top tube until it bottoms out and the grove for the retaining ring can be seen. Reinstall the retaining ring and dust shield.
Slide the cartridge back into the fork. Put the new crush washer on the drain bolt. Push the lower fork leg up and insert bolt (this makes the hole line up easier). Fill with Yamaha's 01 or equivalent fork fluid I believe it's .5L per side. Then before screwing the top cap on, work the bottom fork to release air bubble and to get fluid back into the cartridge. Tighten the top cap, reinstall fender, brakes, and wheel. You're all done