Unit 4118: Comprehensive Motorcycle Mechanics

1. Introduction to Motorcycle Mechanics

• Overview of motorcycle mechanics
• Main components of a motorcycle
  • Frame
  • Engine
  • Transmission
  • Suspension
  • Brakes
• Engine types
  • Two-stroke
  • Four-stroke
  • Electric motors
• Common terminology in motorcycle mechanics

2. Motorcycle Engine Systems

• Fuel system
  • Components: fuel tank, fuel lines, carburetor, fuel injection
• Ignition system
  • Spark plugs, ignition coils, CDI units
• Cooling system
  • Air cooling, liquid cooling, oil cooling
• Lubrication system
  • Types of lubricants
  • Oil pumps, oil filters

3. Motorcycle Maintenance and Inspection

• Importance of regular maintenance
• Oil changes
  • Frequency and procedure
• Chain adjustments
  • Tensioning, lubrication
• Brake checks
  • Pads, fluid levels, wear indicators
• Tire maintenance
  • Pressure checks, tread inspection, replacement criteria

4. Motorcycle Electrical Systems

• Battery types and maintenance
• Charging system
  • Alternators, regulators/rectifiers
• Wiring harness
  • Common wiring layouts
• Troubleshooting common electrical issues
  • Dead battery, faulty wiring, blown fuses

5. Motorcycle Suspension and Steering

• Types of suspension systems
  • Telescopic forks, mono-shock, dual shocks
• Steering geometry
  • Rake, trail, caster angle
• Adjustments for optimal handling
  • Preload, damping, rebound settings

6. Motorcycle Braking Systems

• Drum brakes
  • Components and operation
• Disc brakes
  • Calipers, rotors, hydraulic systems
• Anti-lock Braking Systems (ABS)
  • Functionality and benefits
• Maintenance techniques
  • Brake fluid replacement, pad inspection

7. Motorcycle Fuel Systems

• Carburetors
  • Components, jetting, choke operation
• Fuel injection systems
  • Sensors, injectors, control units
• Fuel filters and pumps
• Tuning for optimal performance

8. Motorcycle Transmission and Clutch

• Manual transmissions
  • Gearbox operation, gear ratios
• Automatic transmissions
  • Types: CVT, dual-clutch
• Clutch operation
  • Types: wet, dry, multi-plate
• Gear shifting techniques
• Maintenance tips

9. Troubleshooting and Diagnostics in Motorcycle Mechanics

• Diagnosing engine misfires
• Identifying electrical problems
• Troubleshooting starting issues
• Addressing performance problems
  • Power loss, overheating, unusual noises

10. Safety Practices in Motorcycle Mechanics

• Personal protective equipment (PPE)
  • Gloves, eye protection, ear protection
• Proper tool usage
• Safe working procedures in the workshop
  • Clean workspace, proper lifting techniques, fire safety