🏷️ Basic Information

Make:

SYM (Sanyang Motor)

Model:

Mio

Model Variants Covered:

Mio 50, Mio 100

Vehicle Type:

Scooter

Engine Code Mio 50:

Likely a 4-stroke, air-cooled, single-cylinder engine (specific code varies by production year, e.g., F33)

Engine Code Mio 100:

Likely a 4-stroke, air-cooled, single-cylinder engine (specific code varies by production year, e.g., F37)

👋 Introduction

Target Audience:

Professional SYM dealership technicians, independent motorcycle repair shops, and experienced DIY enthusiasts.

Manual Value Proposition:

Provides factory-level accuracy and detail, equivalent to what authorized SYM service centers use, ensuring correct and efficient repairs. Offers a significant cost saving over dealership service fees.

Diagrams Illustrations:

Includes detailed step-by-step diagrams and illustrations for virtually every procedure.

Technical Data Accuracy:

Factory-sourced data ensures precision in specifications like torque settings, fluid capacities, and wear limits.

Compatibility:

Windows and MAC compatible PDF format for broad accessibility.

📋 Manual Details

General Coverage:

All aspects of workshop service, repair, diagnostics, and maintenance for SYM Mio 50 and Mio 100 scooters.

Specific Systems Covered:

Engine, Transmission (CVT), Fuel System (EFI/Carburetor depending on year), Electrical System (including ignition and lighting), Cooling System (Air), Braking System (Front Disc/Rear Drum typical), Suspension (Front Telescopic Fork/Rear Mono-shock), Chassis and Frame, Bodywork and Panels, Wheels and Tires, Lubrication System.

Estimated Page Count:

Hundreds of pages (specific count varies, but typical professional workshop manuals are extensive).

Manual Classification:

Workshop Repair Manual / Service Manual

Language:

English (typical for officially distributed manuals, may contain localized sections or diagrams)

Digital Format:

PDF

📖 Manual Coverage

Engine Mechanical:

Detailed engine overhaul procedures, piston and cylinder inspection, valve clearance adjustment, crankshaft and connecting rod checks, gasket replacement, sealing.

Fuel System:

Carburetor cleaning, adjustment, and rebuilding (for older models); Fuel injection system diagnostics, injector testing, fuel pump checks (for newer models).

Transmission Drivetrain:

Continuously Variable Transmission (CVT) inspection, variator roller and clutch assembly maintenance, belt replacement, gear oil change (if applicable).

Electrical System:

Wiring diagrams for all circuits, starter system, charging system (stator, regulator/rectifier), ignition system (CDI, spark plug), lighting circuits, horn, battery maintenance and testing.

Brakes:

Brake pad replacement, brake fluid flush and bleed, caliper inspection and service, master cylinder checks, brake line condition.

Suspension Steering:

Front fork oil change and seal replacement, rear shock absorber inspection and replacement, steering bearing adjustment and replacement, handle bar alignment.

Routine Maintenance:

Oil and filter changes, air filter replacement, spark plug replacement, drive belt inspection, brake checks, tire pressure and condition.

Troubleshooting:

Diagnostic procedures for common starting issues, performance problems, electrical faults, and system malfunctions, often with symptom-based guides.

Repair Rebuild:

Step-by-step instructions for engine rebuilds, transmission servicing, electrical component replacement, body panel repair and replacement, and more.

Technical Data Tables:

Torque specifications for all fasteners, fluid capacities, component dimensions, wear limits, and adjustment specifications.

Depth Of Information:

Comprehensive, covering basic maintenance to complete engine and transmission overhauls, including electrical system diagnostics and troubleshooting.

📊 Manual Specifications

File Type:

Adobe Acrobat PDF

Searchability:

Typically fully searchable text within the PDF document.

Print Readability:

High resolution, designed for clear viewing and printing of text and diagrams.

Binding Method For Physical Manuals:

N/A (Digital Download)

Paper Quality For Physical Manuals:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Four-stroke, air-cooled, SOHC, single-cylinder

Displacement:

Approximately 49.4 cc (exact value may vary slightly by production year)

Bore X Stroke:

Specifics vary, but typically around 39.0 mm x 41.4 mm (check specific model year in manual).

Compression Ratio:

Typically around 10.5:1 (check specific model year in manual).

Engine Type:

Four-stroke, air-cooled, SOHC, single-cylinder

Displacement:

Approximately 98.5 cc (exact value may vary slightly by production year)

Bore X Stroke:

Specifics vary, but typically around 50.0 mm x 49.5 mm (check specific model year in manual).

Compression Ratio:

Typically around 9.7:1 (check specific model year in manual).

Horsepower Mio 50:

Typically in the 3-4 HP range (check specific model year for exact figures).

Horsepower Mio 100:

Typically in the 6-7 HP range (check specific model year for exact figures).

Fuel Delivery Mio 50:

Primarily Carburetor on earlier models; potential for Fuel Injection on later models. Manual will cover specific system.

Fuel Delivery Mio 100:

Primarily Fuel Injection (EFI) on most models, but earlier versions may have had carburetors. Manual will cover specific system.

🔧 Transmission

Transmission Type:

Automatic CVT (Continuously Variable Transmission) with dry centrifugal clutch.

Transmission Options:

N/A (CVT is standard for these models)

Drive Belt Maintenance:

Manual covers inspection, adjustment, and replacement of the drive belt and associated components (e.g., variator, clutch shoes).

📐 Dimensions

Length:

Approx. 1,700 mm - 1,800 mm (varies by model year and specific Mio variant, check manual for exact dimensions).

Width:

Approx. 670 mm - 700 mm (check manual for exact dimensions).

Height:

Approx. 1,030 mm - 1,060 mm (check manual for exact dimensions).

Dry Weight Mio 50:

Approx. 80 kg - 85 kg (check manual for specific model).

Dry Weight Mio 100:

Approx. 85 kg - 90 kg (check manual for specific model).

Fuel Tank Capacity:

Typically around 5.0 - 5.5 liters (check manual for specific model).

🛡️ Safety Features

Crash Test Data:

Not typically subject to extensive automotive crash testing standards; focus is on maneuverability and basic safety features.

Braking System:

Front disc brake and rear drum brake are standard configurations for most model years. Manual details inspection and maintenance.

Lighting System:

Headlight, taillight, brake light, and turn signals are critical for visibility. Manual covers electrical diagnosis and bulb replacement.

Chassis Integrity:

Manual provides guidance on frame inspection and potential repairs to ensure structural integrity.

💡 Technology Features

Dashboard Features:

Analog or digital speedometer, odometer, fuel gauge, indicator lights (turn signals, high beam, engine check light). Manual explains functionality.

ABS Availability:

ABS is generally not a standard feature on lower-displacement Mio models, but may be available on certain regional variants or later models. Manual will confirm.

Keyless Ignition:

Some higher trim levels or later models might feature keyless ignition systems. Manual will detail operation and maintenance if applicable.

🔧 Maintenance

Engine Oil Change:

Typically every 3,000 km or 6 months, whichever comes first (refer to manual for exact interval and oil type).

Drive Belt Inspection Replacement:

Inspection recommended every 6,000 km, replacement typically around 18,000 - 24,000 km or as wear dictates (refer to manual).

Air Filter Replacement:

Typically every 6,000 km or as needed based on riding conditions (refer to manual).

Spark Plug Replacement:

Typically every 6,000 - 12,000 km depending on spark plug type (refer to manual).

Engine Oil Type:

SAE 10W-40 API SJ or higher (for most models, verify in manual for specific viscosity and API rating).

Engine Oil Capacity:

Approximately 0.8 - 0.9 liters for Mio 50, 0.9 - 1.0 liters for Mio 100 (refer to manual for exact capacity).

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid (verify in manual).

Gear Oil Type:

Specific gear oil (e.g., SAE 80W-90 API GL-4) for the final drive unit (refer to manual).

Common Wear Items:

Drive belt, variator rollers, clutch shoes, brake pads, tires, and suspension components are typical wear items. Manual details inspection and replacement.

Electrical Connections:

Corrosion or loose connections in wiring harnesses can sometimes cause intermittent electrical issues. Manual's wiring diagrams are crucial for diagnosis.

📚 Vehicle History

Manufacturer:

Sanyang Motor Co., Ltd. (SYM) is a Taiwanese company founded in 1954, known for producing scooters, motorcycles, and mobility scooters.

Sym Mio Introduction:

The SYM Mio was introduced to offer a stylish and user-friendly urban scooter. It has seen updates in styling, engine technology (transitioning to fuel injection), and emissions compliance over its production run.

Manufacturing Location:

Primarily manufactured in Taiwan by SYM.

🏆 Awards & Recognition

Manufacturer Awards:

SYM has received various accolades for product design and quality over the years in the scooter and motorcycle industry. Specific awards for the Mio model are not broadly publicized but its consistent market presence indicates acceptance.