I have a 3 week old 2000 TXT 280, and was checking the bike over for loose fasteners, after riding some slow sections for break-in. The maintenance video mentioned the factory sets dampening on the rear shock to the softest setting. I put a 7mm wrench on adjuster on the bottom side of the rear shock, and it felt loose. When I turned the adjustment bolt, it turned without much resistance. I was able to wiggle the bolt with a small pair of pliers, and pull it out. The O ring, and grease on the adjuster was the only thing keeping the adjuster in the shock body. The adjuster seems to be cleanly sheared off just at the base of the "cone" where the adjuster tapers down to a smaller size. My first question is, does this sound like a defect, or have I somehow cut the adjuster in half?

Second, will the shock lose compression or fluid with this adjuster broken? I see no oil leaking from the spot. Is it possible to ride the bike, and just not have the ability to make adjustments? If it does not need immediate attention I prefer not to miss the start of the season with the brand new bike out of commission. If it does need to be fixed ASAP, what would be the best action to take?

Thanks

Michael

Michael,

This sounds like a problem that your Dealer needs to take a look at. I haven't heard of this happening before (shearing of the adjuster). I know from doing a lot of competition suspension work that bottoming out/topping out adjusters with any amount of force can create problems, but shearing off is somewhat unusual. This is also a problem with carb air/fuel needle adjusters. They are usually a fine Metric thread and adjustments should be done with a light "feel" (thumb and index fingers) and little force. The o-rings on needle adjusters (especially carb types) are usually to provide resistance (hold the adjustment) and seal out dirt. I would guess that the shaft leads to the damping needle/orfice, which is sealed inside the shock. Might be a good idea to have your Dealer look at it.

Jon