The MX Er 125/150 is a lightweight scooter designed for urban commuting, emphasizing reliability, fuel efficiency, and ease of operation. This model, from a Taiwanese manufacturer renowned for its scooters and motorcycles, features an automatic CVT transmission for effortless riding and a comfortable seating position suitable for daily transportation. Its engineering focuses on providing practical and economical mobility, making it a competitive choice in its segment against other commuter scooters. This Workshop Service Repair Manual provides comprehensive guidance for the MX Er 125/150. It covers detailed maintenance procedures, including routine servicing and fluid changes, as well as in-depth troubleshooting steps for common and uncommon issues. The manual also offers thorough explanations of repair processes for all major vehicle systems, such as the engine, transmission, chassis, brakes, and electrical components, complete with technical specifications and diagrams to assist owners, mechanics, and technicians in maintaining and repairing the vehicle effectively. 🏷️ Basic Information Identification Make: Kymco Model: MX Er 125 150 👋 Introduction Market Position Vehicle Segment: Lightweight Scooter / Commuter Scooter Target Audience: Urban commuters, riders seeking economical and practical transportation. Competitive Analysis Key Competitors: Honda PCX, Yamaha NMAX, SYM Jet, Suzuki Address (models with similar engine displacement and purpose). Key Features Design Philosophy: Focus on reliability, fuel efficiency, and ease of operation for daily commuting. Scootability: Automatic transmission (CVT) for effortless riding, comfortable seating position, under-seat storage. Ergonomics: Designed for comfortable urban riding with an upright posture and easy reach to controls. 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Format: PDF Download Language: English Page Count Page Count: Hundreds of pages (exact number not specified, but implies comprehensive coverage) Manual Type Manual Scope: Official Factory Service Repair Manual 📖 Manual Coverage Systems Covered Engine: Complete overhaul, tuning, diagnostics, cooling system, lubrication system, fuel system, ignition system, exhaust system, engine components (pistons, rings, valves, camshafts, crankshaft, bearings, etc.). Transmission: Automatic transmission (CVT) operation, maintenance, repair, clutch system, drive belts, variator, torque converter. Chassis: Frame inspection and repair, suspension (front forks, rear shock absorber) maintenance and adjustment, steering system service. Brakes: Front and rear brake system service, hydraulic lines, brake pads, brake discs, master cylinder, caliper overhaul, bleeding procedures. Electrical: Complete wiring diagrams, lighting system, battery maintenance, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), ignition system components, diagnostic trouble codes (DTCs) and troubleshooting. Fuel System: Fuel tank, fuel pump, fuel filter, carburetor (or fuel injection system, if applicable) adjustment and cleaning, fuel lines. Bodywork: Body panel removal and installation, fairings, seat, luggage compartment, cosmetic repairs. Procedures Included Maintenance: Oil change, filter replacement (oil, air, fuel), spark plug replacement, chain adjustment and lubrication (if applicable), brake fluid flush, coolant flush, general inspections. Troubleshooting: Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting charts, electrical system fault finding. Repair: Detailed instructions for component disassembly, inspection, repair, and reassembly for all major vehicle systems. Includes torque specifications for critical fasteners. Adjustments: Carburetor synchronization, idle speed adjustment, brake lever free play, suspension preload. Technical Depth Diagnostics: Advanced diagnostics, including interpretation of diagnostic trouble codes (DTCs), wiring harness testing, component electrical testing. Rebuilds: Comprehensive instructions for engine and transmission rebuilds, including specifications for machining and clearances. Component Specs: Detailed specifications for all major components, including tolerances, clearances, and wear limits. 📊 Manual Specifications File Format File Format: PDF Print Quality: High-resolution, printable pages Searchable Text: Yes, text-searchable for quick information retrieval Binding Type Binding Type: Digital (PDF Download) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, SOHC, Air-cooled Displacement 125Cc: 124.6 cc (for 125cc variant) Displacement 150Cc: 150 cc (for 150cc variant - exact displacement may vary slightly based on regional specification) Performance Horsepower Approx 125Cc: Estimated 8-10 HP (at crankshaft, dependent on exact model year and tune) Horsepower Approx 150Cc: Estimated 10-12 HP (at crankshaft, dependent on exact model year and tune) Cooling System: Forced Air Cooling Fuel System Fuel Delivery: Carburetor (common for this class, though later models might have EFI) Fuel Type: Unleaded Gasoline Fuel Tank Capacity: Typically around 5-7 Liters (specific value to be confirmed in manual) Ignition System: CDI (Capacitor Discharge Ignition) 🔧 Transmission Standard Transmission Type: Automatic (CVT - Continuously Variable Transmission) Drive Type: Belt Drive Features Clutch Type: Centrifugal Clutch 📐 Dimensions Exterior Length: Approx. 1800-1900 mm (specific to model year) Width: Approx. 650-750 mm (specific to model year) Height: Approx. 1100-1200 mm (specific to model year) Wheelbase: Approx. 1300-1350 mm (specific to model year) Weights Dry Weight: Approx. 100-115 kg (specific to model year and variant) Curb Weight: Includes all necessary fluids and a full tank of fuel 🛡️ Safety Features Active Features Braking System: Front disc brake, Rear drum brake (common configuration; some later models may have dual discs or ABS on specific variants). Tire Size Front: Typically 100/80-14 or similar (confirm in manual)...