2004 Daelim S2-125/Freewing 125 S2 OEM Service Manual (P/N SM51-0411-01E)

• Daelim S2-125 factory service manual, Publication No. SM51-0411-01E, printed November 2004; 184 pages covering engine, chassis/frame, and electrical service
• Covers engine removal and installation, cylinder-head/valve service, cylinder/piston inspection, crankshaft/crankcase work, lubrication, and oil-pump repair procedures, with factory inspection data and torque tables for the covered assemblies
• Details CVT drive-belt, movable drive face, weight roller, clutch/driven pulley, transmission, and bearing removal, inspection, disassembly, reassembly, and installation
• Includes hydraulic brake service and air bleeding, front and rear caliper work, front-fork overhaul, steering-stem and wheel-bearing service, rear suspension, and swing-arm work, backed by system-specific troubleshooting
• Provides charging, CDI ignition, starter, lights/switches/horn diagnostics, wire and cable routing views, continuity charts, troubleshooting flowcharts, system schematics, and the full Section 18 wiring diagram

Workshop Utility and System Overview

This manual is organized around actual system service, not just routine maintenance. For engine repair, it moves through the lubrication and fuel systems, engine removal, CVT, A.C. generator and starter clutch, cylinder head and valves, cylinder and piston, and the transmission/crankshaft/crankcase assemblies. The SOHC top-end coverage includes camshaft and rocker-arm inspection, valve spring and valve-guide work, valve-seat inspection and refacing, cylinder-head assembly, cam-chain timing, and final valve-clearance adjustment.

Fuel-system repair goes well beyond basic carburetor settings. The manual covers fuel-tank removal, the CVK 116 A vacuum carburetor, diaphragm and jet inspection, float-chamber disassembly, carburetor cleaning and reassembly, float-level inspection, carburetor-insulator service, and pilot-screw adjustment. Lubrication coverage includes engine-oil and filter service, oil-pump removal, disassembly, inspection, assembly and installation, oil-radiator service, transmission-oil inspection, and chassis lubrication points.

CVT, Transmission, Chassis, and Brake Work

The automatic transmission sections provide the procedures a shop or experienced DIY owner needs for deeper drive-system repair. Coverage includes drive-belt removal and inspection, movable drive face and weight rollers, clutch/driven pulley disassembly, pulley and clutch inspection, driven-face bearing replacement, and reassembly with the specified special tools. The separate transmission/crankshaft/crankcase chapter covers drive, counter, and final shafts; transmission bearings; crankcase separation; crankshaft inspection and removal; bearing replacement; and crankcase reassembly.

Chassis repair is treated at the same level. The front-end chapter covers wheel and axle inspection, wheel-bearing replacement, speedometer gear service, brake master-cylinder and caliper disassembly, hydraulic brake bleeding, front-fork removal and overhaul, and steering-stem service. Rear sections cover the brake caliper, rear wheel, parking-brake adjustment, rear cushion, and swing arm. External-body chapters also show removal and installation for the seat, luggage box, body covers, floor panels, windscreen, fenders, muffler, and exhaust pipe when access is required.

Electrical Diagnostics and Visual References

Electrical diagnosis is divided by system rather than left to one generic schematic. The charging chapter includes battery checks, charging-system troubleshooting, A.C. generator inspection, and regulator/rectifier testing. Ignition coverage includes the CDI unit, pulse generator, ignition coil, ignition timing, side-stand cut-off circuit, and a dedicated no-spark troubleshooting chart. The starter section covers starter-device location, fault isolation, starter-motor disassembly and inspection, and starter magnetic-switch tests. Lights, switches, horn, fuel unit, headlight controls, and related continuity checks are handled in their own chapter.

Useful visual references include the vehicle wire/cable routing views, charging-system schematic, CDI ignition schematic, starter-system schematic, switch continuity charts, and the full vehicle wiring diagram in Section 18. Exploded assembly views throughout the manual support component identification for the CVT, starter clutch, cylinder head, crankcase, front-end, and rear suspension assemblies.

Factory Reference Data and Special Tools

Rather than using isolated specification numbers as marketing copy, the manual supplies the underlying shop data where each repair needs it: component-specific torque tables, service limits and wear specifications, fluid-capacity data, carburetor adjustment specifications, and electrical test values.

Special tools are identified at the procedures that require them. Flywheel work calls out an A.C.G. rotor puller and holder; CVT service identifies drive-face holding tools, a clutch spring compressor, and lock-nut wrench; cylinder-head work names the valve spring compressor, valve-guide tools, and seat cutters. Fork, steering, wheel-bearing, transmission, and crankshaft work likewise identifies the required seal drivers, steering sockets, bearing removers, and driver sets, while electrical diagnosis specifies digital, PVA, and CDI testers.

Manual-Specific Repair Notes

The manual warns against using the rear wheel or rear brake to hold the CVT while loosening the drive-face hardware because that can damage the final-reduction system. Flywheel removal is another tool-sensitive job: hammering directly on the flywheel can damage the crankshaft or related components. During piston service, reused piston-pin clips are specifically flagged as a possible cause of serious engine damage, and piston/ring orientation is treated as part of the installation procedure.

Safety Note

Fuel-system work, hydraulic brake repair, battery service, and rotating engine components involve fire, chemical, electrical, and mechanical hazards. Follow the manual’s safety precautions, secure the vehicle correctly, isolate electrical power where specified, and use the designated service tools before beginning those repairs.

The 184-page PDF keeps service information, troubleshooting, specifications, inspection criteria, diagrams, and repair procedures grouped by system, making it practical to confirm that the exact assembly or workshop procedure you need is covered before the scooter is disassembled.