Target Audience:
Hyosung Prima 50 SF50 owners and independent repair shops
Value Proposition:
Provides professional-level repair information, saving money on labor costs and enabling proper vehicle maintenance.
Visual Aids:
Highly detailed exploded pictures and diagrams
Instruction Style:
Easy to follow, step-by-step instructions
Accessibility:
Instant download upon payment
Engine Mechanical:
Engine Removal and Installation, Engine Fuel System, Engine Lubrication and Cooling, Engine Combustion System, Crankcase/Piston/Cylinder, Crankshaft/Transmission/Balancer, Cylinder Head/Valves
Transmission Drivetrain:
Gearbox & Clutch, Transmission System
Chassis Suspension Steering:
Front Wheel and Steering System, Rear Wheel System, Suspension, Chassis
Electrical Ignition:
Alternator/Starter Clutch, Battery/Charging System, Ignition System, Electric Starter, Lights/Meters/Switches, Electrical System, Wiring Diagrams
Fuel System:
Engine Fuel System, Fuel Injection System (if applicable)
Cooling System:
Engine Lubrication and Cooling, Cooling system
Bodywork Exhaust:
Fenders and Exhaust Pipe, Body & Fixtures, Frame/Body Panels/Exhaust System
Wheels Tires:
Wheels & Tyres
Braking System:
Braking System
Maintenance:
Periodic checks & Adjustments, General maintenance
Repair:
All repair procedures covered, from simple to complex
Troubleshooting:
Troubleshooting guides
Diagnostics:
Implied through troubleshooting and detailed system coverage
Depth:
Comprehensive: Covers entire vehicle, step-by-step instructions, exploded pictures and diagrams
Expertise Level:
Suitable for DIY enthusiasts and professional mechanics
Engine Type:
Two-stroke, single-cylinder (Typical for 50cc scooters of this era)
Displacement:
Approximately 49cc (Standard for 50cc class)
Cooling Method:
Air-cooled (Common for this engine size and type)
Horsepower:
Estimated 4-6 HP (Typical range for 50cc two-strokes)
Torque:
Not specified, but typically low for 50cc engines
Fuel Delivery:
Carburetor or Fuel Injection (The manual lists 'Engine Fuel System' and 'Fuel injection system', suggesting it could cover either or specific variants).
Fuel Type:
Unleaded gasoline (Standard)
Oil Type:
2-stroke engine oil (Specific type and grade would be detailed in the manual).
Length:
Not specified, but typically around 1700-1800 mm for 50cc scooters.
Width:
Not specified, but typically around 650-700 mm.
Height:
Not specified, but typically around 1050-1100 mm.
Dry Weight:
Estimated 80-90 kg (Typical for 50cc scooters).
Curb Weight:
Not specified, but slightly higher than dry weight due to fluids.
Crash Test Results:
Not applicable for this type of manual's focus.
Braking System Type:
Disc front, Drum rear (Common configuration for 50cc scooters).
Lighting:
Headlights, taillights, turn signals, brake lights (as detailed in manual's Electrical System section).
Frame Type:
Steel tube frame (Typical construction).
Dashboard:
Analog or digital speedometer, odometer, fuel gauge, indicator lights (as detailed in Lights/Meters/Switches section).
ABS Availability:
Unlikely on this model, but the manual would confirm.
Bluetooth Usb:
Not applicable for this class of scooter.
Oil Change Interval:
Detailed in the manual (typically every few thousand kilometers for 4-stroke, or as per manufacturer recommendation for 2-stroke oil mixing).
Spark Plug Replacement:
Detailed in the manual (e.g., every 5,000-10,000 km).
Air Filter Cleaning Replacement:
Detailed in the manual (e.g., every 2,000-5,000 km).
Transmission Fluid Change:
Detailed in the manual (if applicable, for scooter transmissions).
Engine Oil Type:
Specific 2-stroke oil grade (e.g., API TC, JASO FD) would be listed in the manual.
Coolant Type:
Not applicable if air-cooled.
Brake Fluid Type:
DOT 3 or DOT 4 (Common for motorcycles, specification in manual is definitive).
Common Wear Items:
CVT belt wear, spark plug fouling (common for 2-strokes), battery health, tire wear, brake pad/shoe wear.
Diagnostic Challenges:
Carburetor tuning and adjustment, ignition system troubleshooting (coil, CDI).
Manufacturer:
Hyosung (Manufacturer is S&T Motors, operating as Hyosung Motors & Machinery Inc.)
Model Line:
The Prima 50 (SF50) is a popular entry-level scooter model, likely part of Hyosung's range of smaller displacement vehicles.
Production Years:
Specific production years are not provided, but models like this were common in the 2000s and early 2010s. The manual would cover specific model years within its scope.