Rear Shock Preload Adjustment
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Place the motorcycle in an upright position with the front wheel clamped in a wheel vise.
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Using shock spanner wrench (2884176) loosen the lock nut 1 by turning it counter-clockwise (as viewed from the top of the shock).
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Spray a light lubricant on the adjuster nut where it contacts the spring.
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Adjust shock preload by rotating the adjuster nut clockwise (as viewed from the top of the shock) to INCREASE preload (firm) or counter-clockwise to DECREASE preload (softer).
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Recheck the preload measurement after adjusting.
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Tighten the lock nut securely against the adjuster nut.