Lawn and Garden Equipment Repair and Restoration

  1. Engine Systems Diagnosis and Service
    1. Fuel Systems
      1. Fuel Types and Properties
        1. Gasoline Grades and Octane
          1. Ethanol Blends and Effects
            1. Fuel Degradation
              1. Two-Stroke Oil Mixing
                1. Mixing Ratios
                  1. Oil Types and Quality
                  2. Fuel Stabilizers and Additives
                  3. Fuel Storage and Handling
                    1. Proper Storage Containers
                      1. Fuel Age and Quality
                        1. Contamination Prevention
                        2. Fuel Delivery Components
                          1. Fuel Tanks
                            1. Tank Construction
                              1. Venting Systems
                                1. Cap and Seal Inspection
                                2. Fuel Lines and Connections
                                  1. Line Material Types
                                    1. Clamp Inspection
                                      1. Leak Detection
                                      2. Fuel Filters
                                        1. Inline Filters
                                          1. In-Tank Filters
                                            1. Filter Replacement
                                            2. Fuel Pumps
                                              1. Mechanical Fuel Pumps
                                                1. Impulse Fuel Pumps
                                                  1. Pump Testing
                                                  2. Primers and Chokes
                                                    1. Manual Primer Operation
                                                      1. Automatic Choke Systems
                                                    2. Carburetor Systems
                                                      1. Carburetor Principles
                                                        1. Air-Fuel Mixture Theory
                                                          1. Venturi Effect
                                                            1. Atmospheric Pressure Effects
                                                            2. Carburetor Types
                                                              1. Diaphragm Carburetors
                                                                1. Float-Type Carburetors
                                                                  1. Rotary Valve Carburetors
                                                                  2. Carburetor Components
                                                                    1. Float and Needle Valve
                                                                      1. Diaphragms and Springs
                                                                        1. Jets and Passages
                                                                          1. Throttle and Choke Plates
                                                                          2. Carburetor Diagnosis
                                                                            1. Rich Mixture Symptoms
                                                                              1. Lean Mixture Symptoms
                                                                                1. Flooding Conditions
                                                                                  1. Sticking Components
                                                                                  2. Carburetor Service
                                                                                    1. Disassembly Procedures
                                                                                      1. Cleaning Methods
                                                                                        1. Ultrasonic Cleaning
                                                                                          1. Gasket and Diaphragm Replacement
                                                                                            1. Reassembly Techniques
                                                                                            2. Carburetor Adjustments
                                                                                              1. Idle Speed Adjustment
                                                                                                1. Low-Speed Mixture
                                                                                                  1. High-Speed Mixture
                                                                                                    1. Accelerator Pump Adjustment
                                                                                                  2. Fuel Injection Systems
                                                                                                    1. Electronic Fuel Injection Components
                                                                                                      1. Fuel Injectors
                                                                                                        1. Electronic Control Units
                                                                                                          1. Fuel Rail and Pressure Regulator
                                                                                                          2. Fuel Injection Diagnosis
                                                                                                            1. Injector Testing
                                                                                                              1. Fuel Pressure Testing
                                                                                                                1. ECU Diagnostics
                                                                                                            2. Ignition Systems
                                                                                                              1. Ignition Theory
                                                                                                                1. Spark Generation Principles
                                                                                                                  1. Ignition Timing Concepts
                                                                                                                    1. Combustion Requirements
                                                                                                                    2. Ignition System Components
                                                                                                                      1. Magneto Systems
                                                                                                                        1. Permanent Magnets
                                                                                                                          1. Armature and Coil
                                                                                                                            1. Points and Condenser
                                                                                                                            2. Solid-State Ignition
                                                                                                                              1. Electronic Modules
                                                                                                                                1. Hall Effect Sensors
                                                                                                                                  1. Optical Sensors
                                                                                                                                  2. Ignition Coils
                                                                                                                                    1. Primary and Secondary Windings
                                                                                                                                      1. Coil Testing
                                                                                                                                      2. Spark Plugs
                                                                                                                                        1. Heat Range Selection
                                                                                                                                          1. Gap Setting
                                                                                                                                            1. Thread Types
                                                                                                                                            2. Spark Plug Wires
                                                                                                                                              1. Resistance Testing
                                                                                                                                                1. Insulation Inspection
                                                                                                                                              2. Ignition Timing
                                                                                                                                                1. Static Timing Procedures
                                                                                                                                                  1. Dynamic Timing Methods
                                                                                                                                                    1. Timing Light Usage
                                                                                                                                                      1. Timing Adjustment
                                                                                                                                                      2. Ignition System Diagnosis
                                                                                                                                                        1. No Spark Conditions
                                                                                                                                                          1. Weak Spark Diagnosis
                                                                                                                                                            1. Intermittent Spark Issues
                                                                                                                                                              1. Component Testing Procedures
                                                                                                                                                            2. Lubrication Systems
                                                                                                                                                              1. Four-Stroke Lubrication
                                                                                                                                                                1. Oil Types and Viscosity Ratings
                                                                                                                                                                  1. Splash Lubrication Systems
                                                                                                                                                                    1. Pressurized Oil Systems
                                                                                                                                                                      1. Oil Pump Operation
                                                                                                                                                                        1. Oil Filter Types and Service
                                                                                                                                                                          1. Oil Change Procedures
                                                                                                                                                                          2. Two-Stroke Lubrication
                                                                                                                                                                            1. Pre-Mix Oil Systems
                                                                                                                                                                              1. Oil Injection Systems
                                                                                                                                                                                1. Oil Pump Adjustment
                                                                                                                                                                                  1. Reservoir Maintenance
                                                                                                                                                                                2. Cooling Systems
                                                                                                                                                                                  1. Air Cooling Systems
                                                                                                                                                                                    1. Cooling Fin Design
                                                                                                                                                                                      1. Shroud and Ducting
                                                                                                                                                                                        1. Flywheel Fan Operation
                                                                                                                                                                                          1. Debris Removal
                                                                                                                                                                                            1. Fin Straightening
                                                                                                                                                                                            2. Liquid Cooling Systems
                                                                                                                                                                                              1. Radiator Construction
                                                                                                                                                                                                1. Coolant Types and Properties
                                                                                                                                                                                                  1. Water Pump Operation
                                                                                                                                                                                                    1. Thermostat Function
                                                                                                                                                                                                      1. System Flushing Procedures
                                                                                                                                                                                                    2. Exhaust Systems
                                                                                                                                                                                                      1. Exhaust System Components
                                                                                                                                                                                                        1. Muffler Types and Construction
                                                                                                                                                                                                          1. Spark Arrestor Function
                                                                                                                                                                                                            1. Exhaust Manifolds
                                                                                                                                                                                                            2. Exhaust System Service
                                                                                                                                                                                                              1. Carbon Buildup Removal
                                                                                                                                                                                                                1. Leak Detection and Repair
                                                                                                                                                                                                                  1. Gasket Replacement
                                                                                                                                                                                                                    1. Spark Arrestor Cleaning
                                                                                                                                                                                                                  2. Starting Systems
                                                                                                                                                                                                                    1. Recoil Starting Systems
                                                                                                                                                                                                                      1. Recoil Spring Operation
                                                                                                                                                                                                                        1. Rope and Handle Service
                                                                                                                                                                                                                          1. Pawl and Ratchet Mechanisms
                                                                                                                                                                                                                            1. Spring Replacement
                                                                                                                                                                                                                            2. Electric Starting Systems
                                                                                                                                                                                                                              1. Starter Motor Construction
                                                                                                                                                                                                                                1. Solenoid Operation
                                                                                                                                                                                                                                  1. Battery Systems
                                                                                                                                                                                                                                    1. Battery Testing
                                                                                                                                                                                                                                      1. Charging System Operation
                                                                                                                                                                                                                                        1. Battery Maintenance
                                                                                                                                                                                                                                        2. Safety Interlocks
                                                                                                                                                                                                                                          1. Neutral Start Switches
                                                                                                                                                                                                                                            1. Operator Presence Controls
                                                                                                                                                                                                                                              1. Blade Engagement Switches

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                                                                                                                                                                                                                                        2. Core Engine Principles

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                                                                                                                                                                                                                                        4. Drivetrain and Chassis Systems