Oil Your Air Filter
Remove the air filter from the airbox and filter cage, then pour a generous amount of high-quality air filter oil on it over a bucket or trash can. Squeeze and massage the oil throughout the filter, but don't wring it like a towel as this could damage the filter at the seams, creating holes and gaps to let dirt in.
Make sure that the oil has permeated through to the inside of the filter by turning it inside out. Add more oil to the inside if it's dry. Let the oil on the filter tack up a bit before taking to the track.
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Grease the Steering Stem
The first step in steering stem maintenance is loosening the top triple clamp bolts and the steering stern nut. This will allow the entire front end to drop out of the frame, granting you access to both steering stem bearings. Take care where you loosen the steering stern nut, as the front end may drop out of the frame suddenly. I like to place a block of wood or something comparable beneath the front tire to support the frontend.
Apply a good amount of grease to the steering stem bearings. Make sure that they rotate as you grease, ensuring complete coverage. If you don't have a grease brush, using your fingers is fine. Repeat the process on the bottom bearing too. Apply a light coat of grease to the bearing race, as this is what the bearing slides on inside. Repeat the process on the bottom race.
Bleed the Brakes
Find a catch container and route a looped section of fuel line into it. The loops helps keep bubbles from finding their way back toward the caliper bleed valve, where you attach the other end of the hose to. The process of bleeding brakes is simple: Pump the pedal or lever several times and, while maintaining pressure on it, crack the bleed valve open and closed to allow a small amount of brake fluid out. Repeat this process until either the feel of the lever or pedal is improved or all of the fluid has been replaced with new fluid.
Remember that as you are bleeding the brakes keep an eye on the fluid level in the master cylinder. Be sure to add more fluid before the level gets to low, or you will actually pump air into the brake line and cause even bigger problem for yourself.
Lube Chain Adjusters
Remove the rear wheel to gain access to the chain adjuster bolts. With the rear wheel off, this is also a good time to service the shock linkage. Loosen the chain adjuster lock nut, the use a T-handle wrench to remove the chain adjuster bolts completely from the swing. Apply a liberal amount of grease and or moly lube to the threads of the chain adjuster bolt, then reinstall the swingarm. Moly lube is more tenacious than standard grease and can stand up to power washings better. A combination of moly and grease is ideal for this application.
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