Target Audience:
Hyosung Prima 50 SF50 SF-50 owners, independent repair shops, and motorcycle enthusiasts seeking in-depth maintenance and repair knowledge.
Value Proposition:
Provides dealership-level repair information, including a bonus parts catalogue, at a fraction of the cost of official manuals, with instant digital delivery.
Delivery Method:
Instant digital delivery, no physical shipping required.
Content Enhancements:
Includes a bonus parts catalogue for enhanced repair and parts identification.
Printing Option:
Allows users to print specific sections as needed, promoting a clean workspace.
Primary Coverage:
Complete service, repair, and workshop information
Included Sections:
Engine, General Information, Transmission, Chassis, Lighting, Steering, Seats System, Clutch, Suspension, Locks, Brakes, Lubrication, Electrical, Frame, Fuel System, Battery
Estimated Page Count:
Not specified, but indicated as comprehensive
Type:
Service Repair Workshop Manual & Parts Catalogue (Bonus)
Language:
English (presumed based on product description)
Digital Format:
Adobe Acrobat PDF
Engine Systems:
Engine disassembly, assembly, troubleshooting, diagnostics, tuning, lubrication, cooling, fuel delivery, ignition.
Transmission Drivetrain:
Clutch operation, maintenance, and repair; transmission components and service.
Chassis Suspension Steering:
Frame inspection and repair, suspension fork service, shock absorber maintenance, steering system overhaul, wheel bearing service.
Braking System:
Brake caliper service, brake pad replacement, brake line bleeding, brake fluid specifications, master cylinder repair.
Electrical Lighting Battery:
Wiring diagrams, lighting system troubleshooting (headlights, taillights, turn signals), battery maintenance, charging system inspection, starter system service.
Fuel System:
Carburetor disassembly, cleaning, adjustment, fuel tank inspection, fuel lines, fuel filter service.
Body Seats Locks:
Body panel removal and installation, seat system repair, lock mechanism service.
Maintenance Procedures:
Routine maintenance checks, oil changes, filter replacements, spark plug service, belt tension adjustment, lubrication points.
Diagnostic Procedures:
Troubleshooting guides for common performance issues, electrical faults, and mechanical problems.
Repair Procedures:
Step-by-step instructions for component disassembly, inspection, repair, and reassembly.
Technical Specifications:
Torque specifications, clearance measurements, electrical resistance values, fluid capacities and types.
Depth:
Comprehensive, suitable for dealership-level repairs and advanced DIY mechanics.
Format Type:
PDF (Adobe Acrobat)
Platform Compatibility:
PC and Mac compatible
Searchability:
Likely searchable text within PDF, enabling quick information retrieval.
Printability:
Printable sections or entire manuals for physical reference.
Suggested Binding:
Recommend 3-ring binders for organized reference.
Usage Suggestion:
Printable, allowing users to discard soiled pages instead of damaging an original manual.
Engine Type:
Two-stroke, air-cooled (typical for 50cc scooters of this era)
Displacement:
Approximately 49.4 cc (standard for 50cc class)
Bore X Stroke:
Specification not provided, but typical for 50cc 2-stroke engines.
Horsepower:
Typically around 5-7 HP for this class of scooter.
Torque:
Low-end torque focused for urban acceleration.
Carburetor Model:
Details on specific carburetor model not provided, but manual covers service and tuning.
Fuel Type:
Unleaded gasoline mixed with 2-stroke oil (pre-mix or oil injection system).
Ignition Type:
CDI (Capacitor Discharge Ignition)
Type:
Automatic Continuously Variable Transmission (CVT) with V-belt drive.
Optional Transmissions:
N/A (CVT is standard for this model)
Clutch Type:
Automatic centrifugal clutch.
Gear Reduction:
Integral part of CVT design, providing variable gear ratios.
Overall Length:
Specifications not provided, but typical for a 50cc scooter.
Dry Weight:
Typically around 70-80 kg for a 50cc scooter.
Gross Vehicle Weight Rating:
Specification not provided, but manual would contain this.
Oil Change Interval:
Typically every 1,000-2,000 km or annually, detailed in manual.
Spark Plug Replacement:
Recommended at specified intervals, often around 3,000-5,000 km.
Engine Oil:
Manual would specify SAE grade (e.g., SAE 10W-30 or 10W-40) and JASO standard for 4-stroke. For 2-stroke, it specifies oil-to-fuel ratio or oil type for oil injection system.
Brake Fluid:
Manual would specify DOT standard (e.g., DOT 3 or DOT 4).
Gear Oil:
Manual would specify type and viscosity for transmission/gearbox lubrication if separate.
Common Problems:
Carburetor gumming due to infrequent use, CV transmission belt wear, electrical connections corrosion, exhaust system leaks, and 2-stroke engine decarbonization.
Starting Problems:
Manual covers checks for fuel delivery, spark, compression, and electrical system integrity.
Manufacturer:
Hyosung Motors & Machinery Inc. (South Korea)
Model Segment:
Entry-level 50cc scooter, popular for urban commuting and younger riders.
Production Period:
Produced in the late 1990s and early 2000s, with the 1999 model being a reference point.
