Do you have a question about the Yamaha YZ125X 2021 and is the answer not in the manual?
Displacement | 125cc |
---|---|
Bore x Stroke | 54.0mm x 54.5mm |
Ignition | CDI |
Transmission | Constant-mesh 6-speed; multiplate wet clutch |
Final Drive | Chain |
Suspension Front | KYB® Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel |
Brakes Front | Hydraulic disc, 270mm |
Brakes Rear | Hydraulic disc, 245mm |
Tires Front | 80/100-21 |
Seat Height | 38.2 in |
Wheelbase | 58.3 in |
Fuel Capacity | 2.1 gal |
Engine Type | Liquid-cooled 2-stroke; reed-valve inducted |
Fuel Delivery | Keihin PWK38S carburetor |
Suspension Rear | KYB® single shock; 12.4-in travel |
Tires Rear | 110/100-18 |
L x W x H | 32.5 in |
Explains symbols used in the manual for easier understanding.
Provides essential safety guidelines for operating and maintaining the motorcycle.
Details the various parts and components of the motorcycle.
Covers crucial details for preparation, parts, and procedures before servicing.
Lists specialized tools required for accurate adjustment and assembly.
Provides instructions for starting the engine and the break-in procedure.
Details the comprehensive maintenance required after the break-in period.
Lists specific torque values for engine components and fasteners.
Outlines general dimensions, weight, and capacity of the vehicle.
Details technical specifications related to the engine, including bore, stroke, and clearances.
Lists technical specifications for the chassis, suspension, and brakes.
Provides detailed specifications for the motorcycle's electrical system components.
Outlines recommended maintenance schedules based on usage intervals or mileage.
Details essential checks and maintenance to perform before operating the motorcycle.
Covers checks and adjustments related to the engine's operation and components.
Details checks and adjustments for the motorcycle's chassis, brakes, and suspension.
Details procedures for removing, disassembling, checking, assembling, and installing the front wheel.
Details procedures for removing, checking, and installing the rear wheel and sprocket.
Covers removal, disassembly, checking, assembly, and installation of the front brake system.
Details procedures for removing, checking, and installing the handlebar and its controls.
Covers removal, disassembly, checking, assembly, and installation of the front fork legs.
Covers procedures for removing, checking, and installing the drive chain and sprockets.
Provides instructions for removing the engine, including the exhaust pipe.
Details procedures for removing, checking, and installing the clutch assembly.
Details procedures for separating, disassembling, checking, and assembling the crankcase.
Covers procedures for removing and checking the radiator.
Details procedures for removing, disassembling, checking, and assembling the water pump.
Covers procedures for removing the fuel tank and its components.
Details procedures for removing and maintaining the air filter element.
Covers removal, disassembly, checking, assembly, and installation of the carburetor.
Covers troubleshooting and checking components of the ignition system.
Identifies and illustrates key electrical components of the motorcycle.
Provides general guidance and context for the troubleshooting information.
Addresses common engine starting and running issues and their causes.
Covers common clutch problems like slippage and dragging, with possible causes and actions.
Addresses issues related to shifting gears, gears jumping out, and transmission noise.
Covers overheating and noise issues related to the cooling system.
Addresses poor disc brake performance, fluid leaks, and stuck components.
Covers front and rear suspension issues like stiffness, softness, and leaks.
Addresses handlebar wobble and heavy steering issues.
Explains how to adjust carburetor settings for optimal engine performance based on conditions.
Discusses tuning aspects of the chassis, including sprockets, tire pressure, and suspension.