Yamaha YZ125X 2023 Owner's Manual

CHASSIS8-12EAM30177SETTING OF SPRING AFTERREPLACEMENTAfter replacement, be sure to adjust the spring tothe set length [sunken length 90–100 mm (3.5–3.9 in)] and set it.1. Use of soft spring• Adjust to decrease rebound damping force tocompensate for less spring load. Run with therebound damping force adjuster one or twoclicks turned out, and readjust it to suit yourpreference.2. Use of stiff spring• Adjust to increase rebound damping force tocompensate for greater spring load. Run withthe rebound damping force adjuster one ortwo clicks turned in, and readjust it to suit yourpreference.TIPAdjusting the rebound damping force will be fol-lowed more or less by a change in the compres-sion damping force. For correction, adjust todecrease compression damping force.WARNINGEWA19200When using a rear shock absorber otherthan currently installed, use the one whoseoverall length “a” does not exceed the stan-dard as it may result in faulty performance.Never use one whose overall length is great-er than standard.EAM30178REAR SHOCK ABSORBER SETTING PARTS• Rear shock spring “1”[Equal-pitch steel spring]Length “a” of standard shock490 mm (19.29 in)12STD spring rate(N/mm) 48TypeSpringrate(N/mm)Part number I.D.mark/Q’tySOFT 42 5UN-22212-00(Silver) Brown/144 5UN-22212-10(Silver) Green/146 5UN-22212-20(Silver) Red/148 5UN-22212-30(Silver) Black/150 5UN-22212-40(Silver) Blue/152 5UN-22212-50(Silver) Yellow/154 5UN-22212-60(Silver) Pink/1STIFF 56 5UN-22212-70(Silver) White/1