Lesson 1Wheels, Tyres, and Braking Systems (Rims, Hubs, Disc Rotors, Calipers, Pads)This part explains wheel setups, choosing tyres, and braking tools. You will learn how rims, hubs, rotors, calipers, and pads are described, checked, stored, and made ready for safe fitting.
Types, sizes, and specs of rims and hubsSizes, offset, and fitting of disc rotorsDesigns, fitting styles, and tools for calipersCompounds, wear limits, and codes for brake padsSizing, load ratings, and speed marks for tyresStorage and marking for wheels, tyres, and brakesLesson 2Electrical System Parts (Battery, Wiring Harness, ECU, Ignition, Lighting, Fuses)This part covers the electrical system from power source to lights. You will learn how the battery, harness, ECU, ignition, and safety devices are described, marked, and arranged for putting together and checking.
Types, ratings, and fitting tools for batteriesBranches and connectors of main wiring harnessPlace, fitting, and part numbers for ECUIgnition coils, plugs, and high-tension wiresLighting units, bulbs, and connector rulesLayout for fuses, relays, and circuit safetyLesson 3Overview of 250cc Street Motorcycle StructureThis part gives a big-picture view of a 250cc street motorcycle. You will learn how main parts connect, how weight and space are balanced, and how parts drawings show the full structure.
Breakdown of main assemblies and systemsOverview of frame, engine, and suspension layoutRouting of intake, exhaust, and fuel on the frameRouting of electrical harness and part areasBasics of control comfort and rider positionReading factory exploded views and part listsLesson 4Fuel and Intake Systems (Fuel Tank, Fuel Lines, Petcock, Injectors/Carburettor)This part explains fuel storage and delivery parts. You will learn how tanks, lines, valves, pumps, and injectors or carburettors are described, kept from dirt, and arranged for safe putting together.
Building, caps, and air release for fuel tanksArrangements for fuel petcock, pump, and filterDiameters, materials, and paths for fuel linesParts for injectors, rails, and pressure regulatorsBodies, jets, and float parts for carburettorsOrientation of intake boots, airbox, and clampsLesson 5Bodywork and Finishing Parts (Fairings, Seat, Mounting Fasteners, Decals)This part looks at body panels, seat units, and beauty parts. You will learn how fairings, covers, fasteners, and decals are listed, kept from harm, and matched by colour and finish codes.
Identifying front and side fairing panelsParts for tail section, cowl, and seat baseClips, screws, and rubber mounts for bodyworkReferences for paint, colour, and graphicsWindscreens, mirrors, and trim add-onsPackaging and stopping scratches for panelsLesson 6Controls and Rider Interface (Handlebar, Grips, Throttle, Clutch/Brake Levers, Foot Controls)This part covers all rider control parts and connections. You will learn how handlebars, levers, pedals, and cables are described, adjusted, and stocked to make sure comfort and safe use are steady.
Dimensions, rise, and clamp sizes for handlebarsGrips, bar ends, and parts for vibration controlAssemblies for throttle tube, cables, and housingTypes and pivots for front brake and clutch leversArrangements for footpegs, pedals, and linkagesRanges for control adjustment and reference spotsLesson 7Chassis and Frame Parts (Subframe, Mounting Points, Fasteners)This part explains the main frame, subframe, and strong brackets. You will learn how mounting spots, supports, and fasteners are spotted, kept safe, and arranged to keep straightness and strong build.
Materials and building types for main frameDesigns, load paths, and supports for subframeLocations for engine and suspension mountingBrackets, tabs, and mounts for add-ons on frameGrades, coatings, and torque for chassis fastenersNumbers for frame ID and care against rustLesson 8Engine and Drivetrain Parts (Engine Assembly, Gearbox, Clutch, Chain/Sprockets)This part covers engine, gearbox, clutch, and final drive parts. You will learn how assemblies are split into small parts, how chains and sprockets are described, and how to stock wear and replacement items.
Groups and main small assemblies for engineShafts, gears, and selector parts for gearboxBasket, hub, plates, and action parts for clutchSpecs and tooth counts for front and rear sprocketsPitch, length, and master link types for drive chainInspection for drivetrain wear and replacement setsLesson 9Suspension and Steering Parts (Front Fork, Rear Shock, Triple Clamps, Steering Bearings)This part explains suspension and steering tools. You will learn how forks, shocks, triple clamps, and bearings are spotted, stored, and made ready so that shape, load, and damping stay right.
Types, tube diameters, and travel for front forksUnits, linkages, and mounting for rear shocksOffsets, stem lengths, and pinch for triple clampsBearings, races, and seals for steering headBuilding and pivot tools for swingarmLabelling, pairs, and direction for suspension