Engine Systems:
Engine disassembly, assembly, lubrication, cooling, carburetion/fuel injection, ignition, exhaust, engine tuning, common problems, diagnostics.
Transmission Drivetrain Systems:
Clutch operation (CVT), gearbox inspection, chain drive maintenance, rear axle, differentials (if applicable), lubrication.
Chassis Suspension Steering Systems:
Front and rear suspension components, shock absorbers, A-arms, steering mechanism, tie rods, wheel bearings, alignment.
Brake Systems:
Hydraulic brake system (front and rear calipers, master cylinder), brake pad replacement, brake fluid flush, drum brake service (if applicable).
Electrical Systems:
Battery, charging system (stator, regulator/rectifier), starter motor, lighting (headlights, taillights, indicators), ignition switch, wiring diagrams, fuses, relays, diagnostic codes.
Fuel System:
Fuel tank, fuel lines, fuel pump, carburetor/injector cleaning and adjustment, fuel filter replacement.
Cooling System:
Radiator, coolant hoses, thermostat, coolant fluid type and capacity, flushing procedures.
Exhaust System:
Exhaust pipes, muffler, heat shields, gasket replacement.
Bodywork Panels:
Plastic panel removal and installation, seat removal, fender replacement, graphics.
Routine Maintenance:
Oil changes, filter replacements (oil, air, fuel), spark plug inspection/replacement, chain adjustment and lubrication, battery maintenance, tire pressure checks.
Troubleshooting Diagnostics:
Step-by-step diagnostic guides for common issues, symptom-based troubleshooting, electrical system diagnostics, engine performance problems.
Component Repair Rebuild:
Detailed instructions for component disassembly, cleaning, inspection, repair, and reassembly (e.g., engine rebuild, carburetor overhaul, brake caliper service).
Installation Replacement:
Procedures for replacing worn or damaged parts, including engine components, suspension parts, electrical components, and body panels.
Periodic Inspections:
Scheduled inspections for key components to ensure safety and reliability.
Depth Of Coverage:
In-depth professional level, covering everything from basic maintenance to complete engine and transmission overhauls.
Diagnostic Capabilities:
Advanced diagnostic procedures including electrical troubleshooting using wiring diagrams and multimeter usage.
Special Tools:
Identification of necessary special tools and equipment for specific repairs.
Engine Type Hornet 50:
Single-cylinder, 2-stroke (typical for 50cc ATVs)
Engine Type Hornet 90:
Single-cylinder, 2-stroke (typical for 90cc ATVs)
Displacement Hornet 50:
Approximately 49.4cc (standard for 50cc class)
Displacement Hornet 90:
Approximately 89.2cc (standard for 90cc class)
Cooling System:
Air-cooled (common for this class of ATV)
Ignition System:
CDI (Capacitor Discharge Ignition)
Horsepower Hornet 50:
Estimated 5-7 HP (typical for class)
Horsepower Hornet 90:
Estimated 7-10 HP (typical for class)
Carburetor Type:
Mikuni VM series or similar (typical, specific model usually found in manual)
Fuel Type:
Unleaded gasoline (87 octane or higher recommended)
Oil Mixing:
Pre-mix or oil injection system (common for 2-stroke engines, manual will specify)
Length:
Varies by model year, typically around 1400-1500 mm
Width:
Varies by model year, typically around 800-900 mm
Height:
Varies by model year, typically around 900-1000 mm
Dry Weight:
Approximately 100-120 kg (typical for class, specific weight varies by model)
Payload Capacity:
Typically around 100-150 lbs (for rider and light cargo)
Front Tire Size:
Typically 16x7.00-8 or similar
Rear Tire Size:
Typically 16x7.00-8 or similar
Wheel Bolt Pattern:
4x100mm (common for smaller ATVs, specific pattern in manual)
Safety Standards:
Complies with applicable ATV safety standards for its class and intended market (e.g., ANSI, ASTM).
Braking System Type:
Hydraulic disc brakes (front and rear) or drum brakes (rear, depending on model year/spec).
Parking Brake:
Lever-actuated parking brake (typically on rear brake caliper or drum).
Lighting:
Headlights, taillight, brake light, often front and rear turn signals.
Safety Guards:
Footwell guards, chain guard, exhaust heat shields.
Oil Change Interval:
Every 100 hours or annually (typical, consult manual for exact interval and oil type).
Air Filter Cleaning:
Clean every 50 hours, replace every 100 hours or as needed.
Spark Plug Check:
Check gap and condition every 50 hours, replace annually or as needed.
Chain Lubrication Adjustment:
Lubricate and check tension every 10-15 hours of riding.
Engine Oil Type:
Typically SAE 10W-40 or 20W-50, API SG or higher, often a specific 2-stroke blend if oil injection is used. Consult manual for exact specification.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Coolant Type:
Ethylene glycol-based antifreeze with corrosion inhibitors. (Manual will specify ratio and capacity).
Common Wear Items:
CVT belt wear, brake pad and shoe wear, battery terminal corrosion, carburetor jet clogging due to fuel quality.
2 Stroke Specific Issues:
Carbon build-up in exhaust port and cylinder head, proper oil/fuel mixture is critical for engine longevity.
