2000 Yamaha EW50 Slider Service Manual
Complete factory service documentation for the Yamaha EW50 Slider scooter. Covers engine overhaul, chassis repair, electrical systems, and routine maintenance procedures. PN: 5JH1-AE1
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Models Covered & Key Technical Specifications
Yamaha EW50 — 2000 Expert Guide Library | EW50 Series Record.
- Calibrated Engine Data: 49.2 cm³ (3.0 cu in) is established at the air-cooled 2-stroke single-cylinder displacement Architecture.
- Rated Compression Ratio: For optimal combustion, 7.2:1 is standardized to the gasoline torque induction requirement Norms.
- Defined Fuel Capacity: 6.5 L (1.72 US gal) reaches the operational tank volume Parameters.
- Universal Tire Pressure: The cold single riding condition dictates 150 kPa (1.50 kg/cm²) front specification Bounds.
- Maximum Brake Disc Specification: Front disk brake assembly specifies 190.0 x 3.5 mm diameter and thickness Topology.
- Documented Battery Rating: 12V 4AH represents the electrical storage capacity requirement Matrix.
Professional Workshop Service Manual & Technical Specifications
Definitive Service Manual: Scooter Official Yamaha EW50 Scooter (2000) Service & Repair Manual - Factory Procedures Parts-Reference
System-Identifier: Yamaha BW EW50 (1999-2000) // System-Identifier: Fuel system and ignition logic // System-Identifier: Air-cooled two-stroke gasoline torque induction engine specifications.
| Feature Category | Documentation Scope | Technical References |
|---|---|---|
| Engine Systems | Cylinder head, piston assemblies, crankshaft configurations | Complete specifications provided |
| Belt Drive Assembly | Primary and secondary pulley configurations, V-belt parameters | Chapter index included |
| Chassis Components | Wheel bearing assemblies, brake disc parameters, suspension specifications | Reference data documented |
Integrated service sections encompass engine overhaul procedures alongside carburetor adjustments, which document brake system maintenance alongside front fork assembly protocols. The manual discusses transmission oil specifications, then covers electrical system fundamentals, proceeds through chassis service intervals, and addresses troubleshooting logic for both ignition and signal systems.
Core Framework
The document includes coverage of general information sections that establish identification procedures and special tool requirements. Specifications are documented for maintenance intervals (1,000 km initial through 24,000 km cycles), including spark plug types (NGK BR8HS or BR9HS depending on market), engine oil requirements (Yamalube 2 or JASO FC grade), and transmission fluid capacities. Bolt torque specifications are documented throughout, with values provided for fastener applications ranging from 3 Nm for oil pump bolts to 103.5 Nm for rear wheel axle nuts, ensuring proper joint separation prevention.
Systematic Architecture
Safety procedures are documented for battery handling (electrolyte contact precautions, charging protocols), brake fluid replacement intervals (every two years), and electrical testing methodologies. The manual provides wiring diagrams with complete color-code references (Black, Brown, Chocolate, Dark Green, Green, Grey, Blue, Orange, Pink, Red combinations), switch continuity inspection procedures, and circuit analysis for ignition, charging, lighting, and signal systems.
Modular Parameters
Fluid capacities are listed for engine oil (1.4 L total with 0.13 L periodic change), transmission oil (0.11 L with 0.13 L total fill), and front fork legs (0.115 L per leg using ISO 6743/4-LHV 46 or SAE 10 grade). Tool requirements are listed for major service operations, including crankcase separating tool (90890-01135), flywheel puller (90890-01189), rotor holding tool (90890-01235), and specialized magnetic force measurement devices.
Diagnostic Protocol
Troubleshooting sections present logical flow for starting system failures (analyzing fuel pathways, electrical delivery, compression integrity), idle speed performance issues, acceleration problems, and brake system malfunctions. The manual references symptom categories including hard kicking analysis, clutch engagement failure investigation, and front fork oil leakage diagnosis alongside handling instability assessment protocols.
Engineered Framework
Periodic maintenance charts identify component inspection points with specific kilometer-based intervals (3,000 km, 6,000 km, 12,000 km, and 24,000 km schedules). The technical specifications section documents cylinder bore measurements (39.993–40.012 mm standard with 0.05 mm taper limit), piston clearance ranges (0.034–0.047 mm), and piston ring end gap specifications (0.15–0.35 mm for both top and second rings). Electrical specifications are provided for battery capacity (12V 4Ah), charging voltage regulation (13–14 V no-load), and circuit breaker amperage (7A main circuit).
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