Model Variant:
Daystar 125 (VL125) single-cylinder cruiser-style motorcycle
Production Years Covered:
Late 1990s through mid-2000s model years
Market:
Europe and Asia, sold as an entry-level learner-legal cruiser
Manual Type:
Complete Service and Repair Manual
Coverage:
All systems, procedures, specifications and diagnostics
Delivery:
Instant download after payment
Printing:
All pages are printable
Target Audience:
Entry-level riders, learner-legal commuters and DIY owners
Class:
Lightweight 125cc cruiser-style motorcycle
Price Point:
Affordable alternative to Japanese 125cc cruisers
Running Costs:
Low fuel consumption and inexpensive consumable parts
Serviceability:
Simple single-cylinder layout, easy to maintain at home
Engine:
Air-cooled 124cc single-cylinder four-stroke
Transmission:
5-speed manual gearbox
Styling:
Classic cruiser proportions with low seat height
Licence Category:
Suitable for learner-legal A1 category riders
Coverage Areas:
Engine, fuel system, cooling, exhaust, ignition, clutch, transmission, frame, suspension, brakes, wheels, tyres, electrical, wiring diagrams and bodywork
Procedures Included:
Scheduled maintenance, diagnostics, dismantling, repair, reassembly and torque specifications
Illustrations:
Detailed illustrations, diagrams and wiring schematics throughout
Instructions:
Step-by-step, sequential procedures written for technician and DIY use
Delivery Method:
Instant download
Printing:
Printable on standard home or workshop printers
Search:
Text-searchable PDF for quick location of sections
Portability:
Can be stored on computer, tablet or smartphone
Shipping:
No shipping cost, no CD or paper manual required
Engine Removal and Installation:
Full step-by-step strip-down and refit procedures
Cylinder Head and Valves:
Inspection, valve clearance adjustment and refurbishment
Cylinder and Piston:
Bore inspection, piston and ring measurement and replacement
Crankcase and Crankshaft:
Teardown, bearing inspection and reassembly with torque figures
Camshaft and Timing:
Timing chain or cam drive inspection and alignment procedures
Lubrication System:
Oil pump, oilways and filter service
Carburettor:
Strip, clean, jetting, float level and adjustment procedures
Fuel Tank and Petcock:
Removal, cleaning, fuel tap and line service
Air Intake:
Filter element service and intake tract inspection
Ignition System:
Coil, pickup, CDI and spark plug diagnostics and testing
Exhaust System:
Inspection, removal and refitting
Clutch:
Adjustment, plate inspection and replacement
Gearbox:
5-speed transmission dismantling and reassembly
Primary and Final Drive:
Chain, sprocket and drive-line service
Frame and Steering:
Frame inspection, steering head bearing adjustment
Front Suspension:
Fork oil, seals and spring service
Rear Suspension:
Shock absorber inspection and replacement
Brakes:
Drum or disc brake servicing, bleeding and pad or shoe replacement
Wheels and Tyres:
Wheel removal, spoke and bearing checks, tyre and pressure information
Electrical and Diagnostics
Charging System:
Alternator, regulator and battery testing
Starting System:
Starter motor and relay diagnostics
Instrumentation and Lighting:
Bulb replacement, switchgear and lamp wiring
Wiring Diagrams:
Full schematics with connector and colour references
Fault Finding:
Systematic diagnostic tables for common faults
Torque Specifications:
Fastener tightening tables for engine, chassis and brakes
Service Limits:
Wear limits and measurement tolerances for key components
Parts Information:
Component identification to support ordering of replacement parts
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Type:
Air-cooled, four-stroke, single cylinder, SOHC
Bore and Stroke:
Approximately 56.5 mm x 49.5 mm
Compression Ratio:
Approximately 9.2:1
Valve Train:
Two valves, overhead camshaft
Cooling:
Air-cooled with finned cylinder
Maximum Power:
Approximately 10-11 hp at 9,000 rpm
Maximum Torque:
Approximately 8-9 Nm at 7,000 rpm
Top Speed:
Approximately 95-105 km/h
Fuel Consumption:
Approximately 2.0-2.5 l/100 km depending on riding conditions
Fuel Delivery:
Carburettor
Starter:
Electric start with kick-start backup on some variants
Ignition:
CDI electronic ignition
Fuel Tank Capacity:
Approximately 10-12 litres
Emission Equipment:
Catalytic converter and closed crankcase ventilation on later variants
Type:
5-speed constant mesh manual gearbox
Shift Pattern:
One down, four up
Clutch:
Wet multi-plate clutch
Primary Drive:
Gear drive from crankshaft
Final Drive Type:
Chain drive
Front Sprocket:
Engine output sprocket, teeth count varies by model year
Rear Sprocket:
Rear wheel sprocket, teeth count varies by model year
Chain Adjustment:
Adjuster cams at rear axle, free play specified in manual
Gearbox Oil:
Shared engine and gearbox lubricant, wet sump
Service in Manual:
Clutch adjustment, gearbox strip-down, sprocket and chain replacement covered in detail
Overall Length:
Approximately 2,050 mm
Overall Width:
Approximately 800 mm
Overall Height:
Approximately 1,100 mm
Wheelbase:
Approximately 1,380 mm
Seat Height:
Approximately 690-720 mm
Ground Clearance:
Approximately 150 mm
Curb Weight:
Approximately 130-140 kg depending on variant
Fuel Tank Capacity:
Approximately 10-12 litres
Maximum Load:
Refer to owner data; approximately 180 kg including rider and luggage
Front Tyre:
Commonly 90/90-18 or similar, confirm on vehicle data plate
Rear Tyre:
Commonly 130/90-15 or similar, confirm on vehicle data plate
Ratings and Certification
Crash Test Rating:
N/A - motorcycles are not rated under passenger car crash test programmes
Brakes:
Front disc or drum and rear drum brake, depending on model year
Suspension:
Telescopic front forks and twin rear shock absorbers for stability
Lighting:
Headlamp, tail lamp, brake lamp and turn signals
Frame:
Steel tubular frame with impact-absorbing construction
Controls:
Engine kill switch and side-stand safety switch on later variants
Reflectors:
Front, rear and side reflectors
Instrumentation and Audio
Instruments:
Speedometer with odometer and indicator lamps
Audio System:
N/A - no factory audio system on this model
Lighting:
Halogen headlamp with conventional bulb type indicators
Electrical and Rider Aids
Starting:
Electric start with ignition switch and handlebar controls
Battery:
12 V lead-acid battery
Driver Assistance:
N/A - no electronic rider-assist systems on this model
Charging Output:
Alternator sized for lighting and battery charging only
Engine Oil:
Change at first 1,000 km and every 3,000-4,000 km thereafter
Oil Filter:
Replace or clean at every oil change interval as specified
Spark Plug:
Inspect and clean every 3,000-4,000 km, replace at 8,000-12,000 km
Valve Clearance:
Check and adjust every 4,000-6,000 km
Air Filter:
Clean every 3,000-6,000 km, replace if damaged or heavily soiled
Brake Fluid:
Replace every two years on disc-brake variants
Chain:
Lubricate every 500 km, check free play frequently, replace when worn
Engine Oil Grade:
10W-40 or 20W-50 API SE or higher, quantity approximately 1.0-1.2 litres
Fork Oil:
Hydraulic fork oil as specified in the manual, quantity per leg stated in procedure
Brake Fluid:
DOT 3 or DOT 4 as specified for disc-brake variants
Coolant:
N/A - engine is air-cooled
Fuel:
Unleaded petrol, 91 octane or higher
Known Issues and Wear Items
Cam Chain and Tensioner:
Inspect for rattle and wear at service intervals
Clutch Plates:
Wear over time, check for slipping under acceleration
Drive Chain and Sprockets:
Common wear items, check for stretch, hooking and tight spots
Carburettor:
May gum up with stale fuel, clean and re-jet if running rough
Electrical Connectors:
Check for corrosion, especially lighting and earth points
Battery:
Requires regular charging if the motorcycle is used infrequently
Manufacturer:
Daelim Motor Company
Country of Origin:
South Korea
Established:
Daelim has produced motorcycles and scooters since the 1960s
Brand Focus:
Practical, affordable commuter motorcycles and scooters
Model Family:
Daystar 125, also known as VL125 in some markets
Design Intent:
Learner-legal cruiser with low seat height and relaxed riding position
Production Run:
Sold through the late 1990s and 2000s, with minor updates over the run
Successor:
Followed by later Daelim 125 cruiser and custom variants
Assembly Location:
South Korea, with distribution across Europe and Asia
Market Availability:
Europe, Asia and other markets where learner-legal 125s are popular