Target Audience:
Professional motorcycle technicians, DIY enthusiasts, and workshop owners seeking accurate and complete repair information for SYM Jet 50/100 scooters.
Value Proposition:
Provides the same in-depth, factory-authorized information as used by official SYM dealerships, offering a cost-effective solution for maintaining and repairing the vehicle.
Manufacturer Origin:
Written and provided by the original manufacturer, ensuring the highest level of accuracy and completeness.
Accessibility:
Instant download access allows immediate use for diagnostics and repairs.
Engine Systems:
Engine Mechanical (disassembly, inspection, reassembly), Fuel System (carburetor/injection, fuel pump, filter), Ignition System, Cooling System, Lubrication System, Exhaust System, Emissions Control System.
Drivetrain Systems:
Transmission (CVT operation, maintenance, fluid), Final Drive System (gearbox, lubrication).
Chassis Systems:
Suspension (front forks, rear shock absorber, adjustment), Brakes (front and rear brake systems, hydraulic lines, pads, discs/drums, bleeding), Steering System (handlebar, steering column, bearings).
Electrical Systems:
Wiring Diagrams, Lighting System (headlight, taillight, indicators), Starting System (starter motor, battery), Charging System (alternator/stator, regulator/rectifier), Instrumentation, Horn, Sensors.
Body And Frame:
Body Panels (fairings, seat, storage), Frame, Handlebars, Controls, Stands (center and side).
Maintenance Procedures:
Scheduled maintenance, oil changes, filter replacements, spark plug service, brake fluid flush, coolant checks, tire pressure checks, chain adjustment (if applicable), battery maintenance.
Diagnostic Procedures:
Troubleshooting guides for common issues, symptom-based diagnostics, electrical system diagnostics, engine performance checks.
Repair Procedures:
Detailed step-by-step instructions for component removal, inspection, repair, and reinstallation for all major vehicle systems.
Engine Rebuild:
Complete engine disassembly, cleaning, inspection, component replacement, cylinder head service, piston and ring replacement, crankshaft and connecting rod service, valve timing, engine reassembly.
Electrical Troubleshooting:
Schematic interpretation, component testing, wiring continuity checks, fault finding for ignition, charging, and lighting circuits.
Depth Of Information:
Comprehensive; covers all workshop procedures from basic maintenance to complete engine and transmission overhauls, including detailed diagnostic and repair information.
Diagrams And Illustrations:
Includes detailed step-by-step diagrams, exploded views, and wiring schematics.
Special Tools:
Lists specific tools and equipment required for certain repair and diagnostic procedures.
Engine Type:
Air-cooled, four-stroke, single-cylinder. (Specific displacement variations for 50cc and 100cc models are distinct).
Bore X Stroke 50Cc:
Typically around 39mm x 41.4mm (actual values may vary by specific EURO variant).
Bore X Stroke 100Cc:
Typically around 50mm x 49.5mm (actual values may vary by specific EURO variant).
Horsepower 50Cc:
Approximately 3-4 HP (varies by market and specific EURO emission tuning).
Horsepower 100Cc:
Approximately 6-7 HP (varies by market and specific EURO emission tuning).
Fuel Delivery:
Carburetor or Fuel Injection (FI) depending on the specific model year and EURO standard implementation.
Fuel Type:
Unleaded gasoline
Oil Type:
SAE 10W-40 or 10W-30 API SG or higher (check manual for specific grade recommendations).
Oil Capacity:
Typically around 0.8 - 1.0 liters (check manual for exact capacity).
Engine Oil Change:
Every 3,000 km or 6 months, whichever comes first (refer to manual for precise interval).
Air Filter Cleaning Replacement:
Inspect every 3,000 km, clean or replace as needed. Replace annually or as per manual recommendation.
Spark Plug Replacement:
Every 6,000 - 10,000 km (depending on plug type and condition).
Cvt Belt Inspection Replacement:
Inspect every 6,000 km, replace as needed or at recommended intervals (often around 12,000 - 18,000 km, consult manual).
Brake Fluid Type:
DOT 4 (refer to manual for specific brake system recommendations).
Gear Oil Type:
SAE 80 API GL-4 or GL-5 (typically 0.15L capacity, check manual).
Common Wear Items:
CVT belt, brake pads, tires, suspension bushings due to typical urban usage. Electrical connectors can sometimes corrode.
Carburetor Tuning:
Carburetors may require adjustment or cleaning over time, especially with fuel quality variations or infrequent use.
Brand Overview:
SYM (Sanyang Motor) is a Taiwanese manufacturer known for its scooters, motorcycles, and mobility scooters, established in 1954. They are recognized for producing reliable and accessible two-wheeled vehicles.
Jet Series:
The Jet series is a line of popular urban scooters from SYM, characterized by their sporty styling and practical features. The Jet 50 and Jet 100 represent entry-level and mid-range offerings within this segment.
Manufacturing Origin:
Primarily manufactured in Taiwan, with potential production facilities in other regions.
