Segment:
Lightweight Scooter / Moped
Target Audience:
Owners seeking to perform their own maintenance and repairs, mechanics.
Key Competitors:
Honda Dio, Suzuki Address, Aprilia Scarabeo 50, various other 50cc scooters of the era.
Manual Value Proposition:
Provides comprehensive, detailed instructions for all aspects of repair and maintenance, empowering users to keep their CW50P in optimal condition.
Vehicle Appeal:
Practical, fuel-efficient, and nimble urban mobility solution.
Engine System:
Complete overhaul, tune-up, carburetor adjustment, ignition system, cooling system (if applicable), exhaust system.
Transmission System:
Automatic transmission (CVT) operation, maintenance, repair, belt replacement, clutch assembly.
Chassis System:
Frame, suspension (front fork, rear shock absorber), steering system, wheel and tire maintenance.
Braking System:
Front and rear brake maintenance, adjustments, fluid replacement (if applicable), caliper and drum servicing.
Electrical System:
Wiring diagrams, lighting system, battery maintenance, starter system, charging system, ignition system troubleshooting.
Fuel System:
Fuel tank, fuel lines, fuel filter, carburetor inspection and cleaning.
Bodywork And Trim:
Panel removal, seat maintenance, fairing installation and removal.
Routine Maintenance:
Oil changes, spark plug replacement, air filter cleaning/replacement, drive belt inspection, general lubrication.
Troubleshooting:
Step-by-step diagnostic procedures for common and complex issues.
Rebuilds:
Detailed instructions for engine rebuilds, transmission overhauls, and component replacements.
Technical Adjustments:
Carburetor tuning, idle speed adjustment, brake lever free play adjustment.
Electrical Diagnostics:
Using a multimeter, troubleshooting electrical faults, component testing.
Depth:
Comprehensive (from basic owner maintenance to complete engine and transmission rebuilds).
Diagnostic Capability:
Advanced diagnostic flowcharts and troubleshooting trees.
Engine Type:
2-stroke, air-cooled, reed valve induction
Bore X Stroke:
39.0 mm x 41.0 mm (Typical for this class)
Compression Ratio:
Approx. 7.1:1 (Typical)
Power Output Hp:
Approx. 5.0 - 6.0 HP (Figures can vary by market and tuning)
Torque:
Not typically quoted in high detail for this engine class, but sufficient for its intended use.
Fuel Delivery:
Mikuni VM12-267 or similar carburetor
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Oil System:
Autolube (oil injection system) for 2-stroke oil mixing.
Oil Type:
API TC-rated 2-stroke engine oil (e.g., Yamalube 2).
Type:
Automatic Continuously Variable Transmission (CVT)
Drive Type:
V-belt drive to rear wheel.
Gear Ratios:
Continuously variable, optimizing power delivery across the speed range.
Clutch Type:
Centrifugal automatic clutch.
Transmission Fluid:
No specific transmission fluid required for the CVT; relies on engine oil for autolube.
Length:
Approx. 1,720 mm (Refer to manual for exact spec)
Width:
Approx. 650 mm (Refer to manual for exact spec)
Height:
Approx. 1,040 mm (Refer to manual for exact spec)
Dry Weight:
Approx. 75 kg (Refer to manual for exact spec)
Gross Vehicle Weight Rating:
Sufficient for rider and moderate cargo (consult manual for exact rating).
Storage:
Under-seat storage compartment, potential for rear rack mounting.
Safety Certification:
Standard safety features for mopeds of the era, compliant with relevant regulations.
Lighting:
Headlight, taillight, brake light, turn signals.
Braking System Type:
Front: Drum or Disc (depending on specific market/trim); Rear: Drum.
Frame Construction:
Robust steel frame providing structural integrity.
Infotainment System:
N/A (Basic scooter design focus on utility).
Driver Assistance Features:
N/A
Connectivity Options:
N/A
Dashboard Features:
Speedometer, fuel gauge (may be basic), indicator lights (turn signal, high beam).
Oil Change Interval:
Every 1,000 - 2,000 km or annually (consult manual for precise interval and type).
Spark Plug Replacement:
Every 5,000 - 10,000 km, or as needed based on condition.
Drive Belt Inspection:
Every 5,000 km for wear and tension, replacement typically around 15,000 - 20,000 km.
Air Filter Cleaning:
Every 1,000 - 2,000 km (more frequently in dusty conditions).
Transmission Fluid Spec:
N/A (CVT, autolube system)
Brake Fluid Type:
DOT 3 or DOT 4 (if equipped with disc brakes, consult manual for exact type).
Coolant Type:
N/A (Air-cooled engine)
Common Wear Items:
Drive belt, brake pads/shoes, spark plug, carburetor jets, air filter, starter motor brushes.
Carburetor Problems:
Can become clogged or require adjustment over time, especially with stale fuel or dirt ingress.
Autolube System:
Oil injection pump can occasionally fail or clog, requiring attention to ensure proper 2-stroke oil delivery.
Yamaha Legacy:
Yamaha Motor Company has a long-standing reputation for producing high-quality motorcycles, scooters, and engines known for performance and reliability.
Cw50 Lineage:
The CW50 platform, often marketed under names like Jog or Axis, has been a popular and enduring line of lightweight scooters for Yamaha, evolving through various iterations in styling and minor mechanical updates.
Production Period:
The CW50P designation specifically covers the model years 1999-2002, but the CW50 platform has a broader production history spanning many years before and after this period.
Manufacturing Origin:
Typically manufactured in Japan or other Yamaha global facilities.
