Segment:
Lightweight Supersport Motorcycle
Target Audience:
Young riders, enthusiasts seeking performance and styling in a 50cc class
Competitors 2007:
Derbi Senda, Yamaha TZR50, MBK X-Power 50, Gilera SMT 50
Styling:
Aggressive supersport fairings mimicking larger Aprilia sportbikes
Performance Orientation:
Designed for sporty riding, often a platform for tuning and modification
Handling:
Nimble chassis, capable suspension for its class
Engine:
Complete engine disassembly, assembly, tuning, carburetor settings, lubrication system
Transmission:
Gearbox inspection, repair, clutch service, gear selection mechanism
Chassis And Suspension:
Front fork service (rebuild, oil changes), rear shock absorber adjustment and replacement, swingarm maintenance, steering head bearing service
Brakes:
Hydraulic system bleeding, pad replacement, caliper servicing, master cylinder overhaul
Electrical System:
Wiring diagrams, ignition system troubleshooting, lighting, charging system, starter motor
Fuel System:
Fuel tank, petcock, fuel lines, carburetor (specific model if known, e.g., Dell'Orto PHVA)
Cooling System:
Radiator, coolant hoses, water pump inspection and repair (for liquid-cooled variants)
Exhaust System:
Muffler and pipe inspection, gasket replacement
Wheels And Tires:
Tire pressure, wheel bearing inspection, spoke tightening (if applicable)
Preventive Maintenance:
Regular service intervals, oil changes, filter replacements, chain adjustment, spark plug replacement
Troubleshooting:
Diagnostic flowcharts for common problems, electrical fault finding
Engine Repair:
Piston replacement, cylinder head service, crankshaft inspection, sealing procedures
Transmission Repair:
Gearset replacement, shift drum and fork alignment
Brake System Repair:
Hydraulic line replacement, seal kits, brake disc inspection
Suspension Rebuild:
Front fork seal replacement, damper rod service, rear shock rebuild
Electrical Diagnostics:
Testing ignition coils, stator, rectifier-regulator, battery system checks
Carburetor Tuning:
Jetting recommendations, idle speed adjustment, float level setting
Bodywork And Fairings:
Removal and installation of fairings, seat, fuel tank, and other body panels
Wheel And Tire Service:
Tire mounting and balancing, wheel bearing replacement, spoke tensioning
Customization And Tuning:
While not a primary focus, the manual provides the foundational knowledge for understanding engine performance parameters relevant to tuning
Depth Level:
Comprehensive mechanical and electrical repair, including full engine and gearbox rebuilds
Detail Level:
Step-by-step instructions with torque specifications, critical measurements, and alignment procedures
Engine Type:
Two-stroke, single-cylinder
Displacement:
49.7 cc (approx.)
Bore X Stroke:
39.5 mm x 40.0 mm (typical for AM6)
Cooling System:
Liquid-cooled (most RS50 models)
Horsepower Rating:
Nominally 15 hp (restricted for licensing in some regions)
Torque Rating:
Estimated 8 Nm (approx.)
Carburetor Model:
Dell'Orto PHVA 17.5 (common)
Fuel Delivery:
Carburetor with reed valve induction
Ignition Type:
Electronic CDI
Lubrication System:
Automatic oil injection (separate reservoir)
Oil Change Interval:
Every 2,000-3,000 km or annually (refer to manual for exact specification)
Spark Plug Replacement:
Every 5,000-7,000 km (check condition more frequently)
Chain Lubrication And Adjustment:
Every 500-1000 km, adjust slack as needed (refer to manual)
Fork Oil Change:
Recommended every 10,000-15,000 km or as needed for performance
Engine Oil:
2-stroke synthetic oil (specific API TC, JASO FD or higher)
Coolant:
Ethylene glycol-based antifreeze mixture (e.g., Motorex M3.0 or equivalent)
Brake Fluid:
DOT 4 hydraulic fluid
Transmission Oil:
Specific gearbox oil (e.g., SAE 75W/80 or 80W/90 GL-4)
Common Wear Items:
Clutch plates, piston rings, exhaust gaskets, water pump seals
Carburetor Tuning Sensitivity:
Can be sensitive to altitude, temperature, and exhaust/intake modifications
Electrical Connections:
Corrosion or loose connections can lead to intermittent electrical faults
