Yamaha YZF690-U Owner's Manual

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Instrument and control functions3-223EAU76345Adjusting the front forkWARNINGEWA14671Always adjust the spring preload onboth fork legs equally, otherwisepoor handling and loss of stabilitymay result.Each front fork leg is equipped with aspring preload adjusting bolt, the rightfront fork leg is equipped with a re-bound damping force adjusting screwand the left front fork leg with a com-pression damping force adjustingscrew.NOTICEECA10102To avoid damaging the mechanism,do not attempt to turn beyond themaximum or minimum settings.Spring preloadTurn the adjusting bolt in direction (a)to increase the spring preload.Turn the adjusting bolt in direction (b)to decrease the spring preload.The spring preload setting is deter-mined by measuring distance A,shown in the illustration. The shorterdistance A is, the higher the spring pre-load; the longer distance A is, the lowerthe spring preload.Rebound damping forceThe rebound damping force is adjust-ed on the right fork leg only.Turn the adjusting screw in direction (a)to increase the rebound dampingforce.Turn the adjusting screw in direction (b)to decrease the rebound dampingforce.To set the rebound damping force, turnthe adjuster in direction (a) until itstops, and then count the clicks in di-rection (b).TIPBe sure to perform this adjustment onthe right fork leg.1. Spring preload adjusting bolt1. Distance A(a)(a) (b)(b)(a) (b)111Spring preload setting:Minimum (soft):Distance A = 19.0 mm (0.75 in)Standard:Distance A = 14.0 mm (0.55 in)Maximum (hard):Distance A = 4.0 mm (0.16 in)