Yamaha YZ125X 2023 Owner's Manual

12345678910GENERAL INFORMATIONSAFETY INFORMATION..................................................................................1-1FOR SAFETY, BE SURE TO OBEY THE FOLLOWING: ..........................1-1LOCATION OF IMPORTANT LABELS ............................................................1-4DESCRIPTION..................................................................................................1-7IDENTIFICATION..............................................................................................1-8VEHICLE IDENTIFICATION NUMBER ......................................................1-8ENGINE SERIAL NUMBER .......................................................................1-8INCLUDED PARTS...........................................................................................1-9NIPPLE WRENCH......................................................................................1-9VALVE JOINT.............................................................................................1-9COLLAR (tool for YPVS) ............................................................................1-9IMPORTANT INFORMATION .........................................................................1-10PREPARATION FOR REMOVAL AND DISASSEMBLY..........................1-10REPLACEMENT PARTS..........................................................................1-10INSTRUMENT AND CONTROL FUNCTIONS ...............................................1-11ENGINE STOP SWITCH..........................................................................1-11SHIFT PEDAL ..........................................................................................1-11KICKSTARTER LEVER............................................................................1-11FRONT BRAKE LEVER ...........................................................................1-11REAR BRAKE PEDAL..............................................................................1-11FUEL COCK .............................................................................................1-11STARTER KNOB (CHOKE) .....................................................................1-12SIDESTAND .............................................................................................1-12STARTING AND BREAK-IN...........................................................................1-13FUEL AND ENGINE MIXING OIL ............................................................1-13STARTING A COLD ENGINE ..................................................................1-13STARTING A WARM ENGINE.................................................................1-13BREAK-IN PROCEDURES ......................................................................1-13MAINTENANCE AFTER BREAK-IN ..............................................................1-15MAJOR MAINTENANCE..........................................................................1-15AIR FILTER MAINTENANCE ...................................................................1-15TORQUE-CHECK POINTS.............................................................................1-16MOTORCYCLE CARE AND STORAGE ........................................................1-18CARE........................................................................................................1-18STORAGE ................................................................................................1-19