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General| Brand | Yamaha |
|---|---|
| Model | YZ125(D) |
| Category | Motorcycle |
| Language | English |
Introduces the Yamaha YZ series and the purpose of the manual.
Details critical safety precautions for operating the competition-use machine.
Explains how to navigate the manual using its structure and edge symbols.
Describes the sequential, step-by-step format and notation used in the manual.
Explains the meaning of symbols used in exploded diagrams and text.
Identifies and explains important labels on the vehicle for safe operation.
Provides an illustrated overview of the vehicle's main components.
Details reasons for knowing serial numbers and identifies included parts.
Provides crucial preparation steps before removal and disassembly.
Lists special tools required for tune-up and assembly with their part numbers and uses.
Explains operation of clutch, throttle, brakes, engine stop, and starter.
Details fuel requirements, starting procedures, and break-in guidelines.
Lists general specifications like model, dimensions, weight, and engine details.
Details transmission ratios, chassis type, caster angle, and brake specifications.
Provides specifications for cylinder bore, piston, and crankshaft measurements.
Lists specifications for clutch, transmission, shifter, and carburetor settings.
Provides specifications for cooling system, steering, and suspension components.
Details specifications for swingarm, wheels, brakes, and drive chain.
Details inspection and replacement intervals for key engine and chassis components.
Lists torque specifications for electrical and engine components.
Lists torque specifications for chassis components like steering and front fork.
Specifies general torque values and defines common measurement units.
Illustrates the correct routing of various cables and hoses on the motorcycle.
Provides steps to check and change the engine coolant.
Explains how to inspect the radiator cap for damage and wear.
Details how to adjust clutch lever and throttle grip free play.
Explains how to check the cooling system for leaks and pressure.
Provides instructions for throttle lubrication and air filter cleaning.
Explains how to check the transmission oil level.
Outlines the procedure for bleeding the hydraulic brake system.
Provides steps for draining and refilling transmission oil.
Explains pilot air screw and engine idling speed adjustments.
Details how to adjust front brake lever and rear brake pedal height.
Outlines how to inspect and replace front and rear brake pads.
Explains brake fluid checks and drive chain inspection.
Provides steps for adjusting the drive chain slack.
Details how to inspect the front fork's smooth action and oil leakage.
Explains how to clean front fork seals and relieve pressure.
Details how to adjust front fork rebound and compression damping.
Outlines inspection and adjustment of rear shock absorber preload and damping.
Explains how to inspect wheels for runout and tighten spokes.
Provides steps to check and adjust the steering head for play and smooth action.
Outlines the procedure and torque values for removing body panels.
Details the procedure and torque values for removing the exhaust system.
Outlines the steps and torque values for removing the radiator.
Details the procedure for removing the carburetor and reed valve assembly.
Illustrates the components of the carburetor and their disassembly.
Explains inspection of throttle valve, needle valve, and carburetor body.
Details inspection of jet needle and carburetor filter.
Provides steps for measuring and adjusting the fuel level in the float chamber.
Details the procedure and torque values for removing the cylinder head and cylinder.
Outlines the procedure for removing the piston and power valve assembly.
Explains how to remove the push rod and piston/piston rings.
Outlines procedures for cleaning and checking cylinder head and cylinder.
Details the procedure for removing and inspecting clutch components.
Outlines the procedure and torque values for removing the clutch boss.
Explains inspection of clutch housing, gear, springs, and plates.
Details inspection of push rod, shaft, and related components.
Provides steps for installing clutch components.
Illustrates the components of the kick and shift shaft systems and their removal.
Explains inspection of kick shaft, gears, shift shaft, guide, lever, stopper, and primary gears.
Illustrates the components of the YPVS governor assembly and their removal.
Details the parts and procedure for disassembling the water pump.
Illustrates the CDI magneto components and their removal.
Outlines the steps and torque values for removing the engine from the frame.
Details the procedure and torque values for removing the crankshaft.
Explains how to remove the segment and disassemble the crankcase halves.
Details how to remove the crankshaft and crankcase bearings.
Outlines inspection of crankcase, bearings, and crankshaft measurements.
Illustrates the transmission components and their removal.
Explains inspection of gears, bearings, shift forks, cam, and segment.
Outlines the procedure and torque values for removing the front wheel.
Details the procedure and torque values for removing the rear wheel.
Explains inspection of wheel axle, brake discs, and wheels.
Outlines the procedure and torque values for removing the front brake system.
Details the procedure and torque values for removing the rear brake system.
Illustrates the components of the brake caliper and their disassembly.
Details the components of the brake master cylinder and their disassembly.
Explains how to drain brake fluid and remove caliper pistons.
Outlines how to inspect the brake master cylinder and diaphragm.
Provides steps for installing rear brake caliper and master cylinder kit.
Explains how to install the front brake master cylinder and bracket.
Details how to install rear master cylinder and front brake hose.
Explains how to install rear brake hose and fill brake fluid.
Outlines the procedure and torque values for removing the front fork assembly.
Illustrates the components of the front fork and their disassembly.
Explains how to remove damper assembly and base valve.
Details how to remove the adjuster and inner tube.
Outlines how to inspect the damper assembly and O-ring for damage.
Explains how to inspect the base valve, O-ring, piston metal, spring, and bleed screw.
Details inspection of collar and fork spring.
Explains how to inspect inner and outer tubes for wear.
Outlines how to inspect the adjuster and O-ring for wear.
Provides steps for washing parts, stretching damper, and filling with oil.
Outlines the procedure and torque values for removing the handlebar.
Illustrates the components of the throttle assembly and their disassembly.
Details how to remove brake master cylinder and grip.
Outlines how to inspect the handlebar for bends and damage.
Provides steps for assembling throttle and installing handlebar.
Outlines the procedure and torque values for removing the steering assembly.
Explains how to remove steering ring nut and lower bearing.
Details inspection of steering bearings, races, and stem.
Provides steps for installing the lower steering bracket and bearings.
Outlines the procedure and torque values for removing the swingarm.
Illustrates the components of the swingarm and their disassembly.
Explains how to remove swingarm cap, bearings, and oil seals.
Outlines inspection of swingarm, relay arm, and connecting rod.
Provides steps for installing bearings and oil seals into the swingarm.
Outlines the procedure and torque values for removing the rear shock absorber.
Explains how to remove and inspect shock absorber bearings.
Details how to inspect damper rod, shock absorber, and spring.
Provides steps for installing bearings into the rear shock absorber.
Details how to install the spring, spring guides, and spring seat.
Provides steps for installing dust seal, O-ring, collar, bushing, and shock absorber.
Introduction to the electrical system servicing section.
Identifies electrical components and presents the wiring diagram.
Outlines steps for diagnosing ignition system malfunctions and spark plug issues.
Details spark gap testing and coupler/lead connection checks.
Explains inspection of engine stop switch and ignition coil resistance.
Outlines inspection of spark plug cap for connection and resistance.
Details inspection of CDI magneto coil resistances and CDI unit.
Explains the role of fuel mixture and factors affecting carburetor settings.
Outlines engine test runs and interpreting spark plug discoloration.
Explains how to adjust main jet and pilot air screw for fuel mixture.
Details pilot jet changes and jet needle clip position adjustments.
Explains how jet needle settings affect fuel mixture and performance.
Lists carburetor parts like jets, valves, and needles with part numbers.
Discusses spark plug selection and secondary gear ratio for racing.
Advises adjusting tire pressure and front fork settings for optimal performance.
Provides a chart for adjusting front fork settings based on symptoms.
Lists rear shock absorber springs with part numbers and ID marks.
Provides a chart for adjusting front fork settings based on symptoms.
Provides a chart for adjusting rear shock absorber settings based on symptoms.
