Vehicle Segment:
Lightweight, user-friendly scooter popular for urban commuting and short-distance travel.
Target Audience:
Commuters, younger riders, and those seeking an economical and easy-to-operate mode of transport.
Competitors:
Honda Dio, Yamaha Jog, Kymco Agility, Suzuki Address, various other 50cc and 100cc scooters.
Design Philosophy:
Compact, stylish, and practical design with a focus on ease of use and maneuverability.
Performance Characteristics:
Nimble handling, efficient fuel consumption, and adequate power for urban environments.
Manual Value Proposition:
Provides comprehensive DIY repair and maintenance capabilities, saving on dealership service costs.
Engine Mechanical:
Engine disassembly, assembly, inspection, tuning, lubrication, cooling system, oil pump, oil filter.
Engine Fuel System:
Carburetor adjustment and overhaul, fuel injection system (if applicable to specific models), fuel filter, fuel pump, fuel tank.
Ignition System:
Spark plugs, ignition coil, CDI unit, wiring diagrams, timing.
Transmission:
CVT (Continuously Variable Transmission) inspection, maintenance, clutch, variator unit, belt replacement, drive and driven pulleys.
Brakes:
Brake system overhaul, hydraulic fluid replacement, brake pad replacement, brake caliper maintenance, brake lever adjustment, drum brake adjustment (rear).
Suspension:
Front fork inspection and service, rear shock absorber maintenance, swingarm inspection.
Electrical System:
Battery maintenance, charging system (stator, regulator/rectifier), starter motor, lighting system (headlight, taillight, turn signals), horn, fuses, wiring diagrams.
Frame And Bodywork:
Chassis inspection, body panel removal and installation, seat, handlebars, footpegs, storage compartment.
Wheels And Tires:
Tire inspection, pressure, replacement, wheel bearing maintenance, rim inspection.
Steering:
Handlebar removal and installation, steering head bearing inspection and adjustment.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, tire pressure adjustments, brake adjustments, general lubrication.
Troubleshooting:
Diagnostic procedures for common starting issues, engine performance problems, electrical faults, and more.
Overhaul Procedures:
Detailed step-by-step instructions for disassembling and reassembling major vehicle components.
Component Replacement:
Instructions for replacing wear items and faulty parts such as brake pads, belts, bearings, and bulbs.
Electrical Diagnostics:
Guidance on using multimeters, interpreting wiring diagrams, and diagnosing electrical circuit issues.
Settings And Adjustments:
Carburetor idle speed, mixture, brake lever free play, steering head bearing preload.
Diagnostic Capabilities:
Advanced diagnostic information, including potential fault codes and symptom analysis.
Rebuild Specifications:
Detailed specifications for engine and transmission rebuilds, including clearances, torque values, and tolerances.
Special Tools:
Identification of special tools required for specific maintenance and repair procedures.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all vehicle systems.
Torque Specifications:
Precise torque values for all critical fasteners throughout the vehicle.
Engine Type:
Air-cooled, four-stroke, single-cylinder (typical for Mio models)
Bore X Stroke 50Cc:
Specifics vary by sub-model, but typically around 39.0 mm x 41.4 mm
Bore X Stroke 100Cc:
Specifics vary by sub-model, but typically around 50.0 mm x 49.5 mm
Compression Ratio 50Cc:
Typically around 10.0:1
Compression Ratio 100Cc:
Typically around 9.6:1
Horsepower 50Cc:
Approximately 3.0 - 4.0 HP (depending on specific variant and market regulations)
Horsepower 100Cc:
Approximately 6.0 - 7.0 HP (depending on specific variant and market regulations)
Torque 50Cc:
Typically around 2.5 - 3.0 Nm
Torque 100Cc:
Typically around 6.0 - 7.0 Nm
Fuel Delivery:
Carburetor (Keihin or similar, specific model varies) or Fuel Injection (on later/specific models).
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
Approximately 4.0 - 4.5 Liters (varies by model year and variant).
Engine Oil Change:
Every 3,000-4,000 km or annually (refer to specific model manual for exact interval).
Transmission Oil Change:
Every 6,000-8,000 km or biennially (refer to specific model manual).
Air Filter Cleaning Replacement:
Check every 1,000 km, clean or replace every 2,000-3,000 km.
Spark Plug Replacement:
Every 4,000-6,000 km or as needed based on inspection.
Cvt Belt Inspection Replacement:
Inspect every 5,000 km, replace typically between 15,000-20,000 km or if signs of wear appear.
Engine Oil Type:
SAE 10W-40 API SL or higher (e.g., JASO MA) motorcycle-specific oil.
Engine Oil Capacity:
Approximately 0.7 - 0.8 Liters (including oil filter replacement, refer to manual).
Transmission Oil Type:
SAE 80W-90 API GL-4 or GL-5 gear oil.
Transmission Oil Capacity:
Approximately 100-120 cc (refer to manual for exact capacity).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid (check reservoir cap).
Common Wear Items:
CVT belt wear, brake pad wear, air filter clogging, carburetor jetting issues (older models), spark plug fouling.
Electrical Issues:
Corroded electrical connectors, failing regulator/rectifier, weak battery.
Importance Of Regular Checks:
Regular checks of tire pressure, brake function, and fluid levels are crucial for safe operation and longevity.
Manufacturer:
Sanyang Motor Co., Ltd. (SYM) is a Taiwanese manufacturer founded in 1954, known for producing a wide range of motorcycles, scooters, and ATVs.
Sym Mio Development:
The Mio series has been a consistent offering from SYM, evolving over the years with updates to styling, engine technology (transitioning from 2-stroke to 4-stroke in many markets), and features to meet market demands and emissions standards.
Manufacturing Location:
Primarily manufactured in Taiwan, with potential assembly in other global locations.
