Category:
Performance Scooter
Target Audience:
Enthusiasts and professional mechanics working on Aprilia Quasar scooters
Competitors 2003:
Piaggio Zip, Gilera Runner, Yamaha Aerox, MBK Nitro
Design Philosophy:
Sporty design, agile handling, and reliable performance for urban commuting and light sport riding
Manual Value Proposition:
Provides dealer-level technical information to enable owners and technicians to perform all necessary maintenance and repairs efficiently and accurately.
Engine:
Complete disassembly, assembly, tuning, and troubleshooting of 50cc and 100cc 2-stroke engines
Fuel System:
Carburetor (Dell'Orto PHVA/PHVB), fuel lines, fuel pump, fuel tank, fuel filter maintenance and adjustment
Ignition System:
CDI, spark plug, ignition coil, timing adjustment procedures
Cooling System:
Air cooling system inspection and maintenance
Exhaust System:
Exhaust pipe, muffler inspection and replacement
Transmission:
Automatic CVT (Continuously Variable Transmission) disassembly, inspection, belt replacement, clutch and torque converter servicing
Brakes:
Front and rear brake systems (hydraulic disc front, drum rear for some variants), brake pad replacement, caliper servicing, brake fluid bleeding and replacement
Suspension:
Front telescopic fork maintenance, rear shock absorber inspection and replacement
Electrical System:
Wiring diagrams, battery maintenance, lighting systems (headlight, taillight, turn signals), starter system, charging system (alternator/stator)
Chassis And Bodywork:
Frame inspection, body panel removal and installation, seat, handlebars, and footrest servicing
Wheels And Tires:
Wheel bearing inspection, tire pressure, tire replacement, wheel balancing
Scheduled Maintenance:
Detailed procedures for routine checks, oil changes, filter replacements, spark plug service, and lubrication points
Troubleshooting:
Diagnostic charts and symptom-based troubleshooting guides for common issues
Repair Procedures:
Step-by-step instructions for component removal, disassembly, inspection, repair, and reassembly
Technical Specifications:
Torque specifications, fluid capacities, electrical tolerances, and performance data
Overhaul Guides:
Complete engine and transmission overhaul instructions
Wiring Diagrams:
Comprehensive electrical system wiring schematics
Depth:
Comprehensive, from basic maintenance to complete engine rebuilds and advanced electrical diagnostics
Diagrams:
Detailed exploded views and step-by-step illustrations for all procedures
Diagnostic Tools:
Information on required tools and specialized equipment
Engine Code:
Likely variants based on Piaggio's Master or Quasar engine family (specific code not provided, common to Aprilia/Piaggio)
Engine Description:
Single-cylinder, two-stroke, liquid-cooled (for 100cc, air-cooled for 50cc variants are common)
Displacement 50Cc:
Approximately 49.4 cc
Displacement 100Cc:
Approximately 96 cc
Horsepower 50Cc:
Typically 5-7 HP (varies by market and de-restriction)
Horsepower 100Cc:
Typically 8-10 HP (varies by market and de-restriction)
Top Speed:
Limited by regulation for 50cc (approx. 45 km/h), higher for 100cc
Fuel Delivery:
Carburetor (e.g., Dell'Orto PHVA 17.5 or similar)
Fuel Type:
Unleaded gasoline (RON 95 recommended)
Oil System:
Separate 2-stroke oil injection system
Crash Test Ratings:
N/A (Scooters typically not subject to formal automotive crash testing standards)
Braking System:
Front hydraulic disc brake, Rear drum brake (typical configuration)
Lighting:
Headlight, taillight, brake light, turn signals
Frame Construction:
Steel frame providing structural integrity
Mirrors:
Rear-view mirrors for enhanced visibility
Oil Change Interval:
Every 3,000 - 5,000 km or annually (check manual for exact)
Spark Plug Replacement:
Every 6,000 - 10,000 km (specific plug type recommended)
Air Filter Cleaning:
Every 2,000 - 4,000 km
Cvt Belt Inspection:
Every 5,000 - 8,000 km
Engine Oil Type:
2-stroke scooter oil meeting API TC or JASO FD specifications
Transmission Fluid:
Typically not required for CVT transmission (grease for clutch/torque converter components)
Brake Fluid:
DOT 4 brake fluid
Common Wear Items:
CVT belt wear, spark plug fouling, carburetor jetting sensitivity, rear shock absorber damping
Electrical Quirks:
Occasional issues with starter solenoid or battery connections due to vibration.
Carburetor Performance:
Can be sensitive to altitude, temperature, and fuel quality, requiring periodic tuning.
Manufacturer:
Aprilia is an Italian manufacturer with a strong heritage in motorcycle racing and performance scooters.
Quasars Era:
The Quasar line represented Aprilia's effort to provide stylish, modern, and performance-oriented scooters in the early 2000s.
Platform Sharing:
The Quasar platform shared many components and technologies with other Piaggio Group scooters (Piaggio, Gilera) of the same era, especially regarding engine and transmission options.
Manufacturing Location:
Italy (Typical for Aprilia)
Production Period:
Early 2000s (2003 model year is a key entry point)
