🏷️ Basic Information

Make:

KTM

Model:

625 LC4 SXC

Model Year:

2003

Sub Model:

SXC

Type:

Motorcycle

👋 Introduction

Vehicle Segment:

High-performance Dual-Sport / Supermoto motorcycle.

Target Audience:

Riders seeking off-road capability with on-road performance, often for recreational or competitive use in supermoto events.

Key Competitors:

Other European and Japanese dual-sport and supermoto models of the era, such as certain Yamaha WR models, Honda XR series, Suzuki DR-Z series, and Ducati Hypermotard precursors.

Engine Platform:

KTM's robust LC4 single-cylinder engine, known for its torque and durability in demanding applications.

Suspension Bias:

Performance-oriented suspension (WP Suspension) tuned for supermoto riding, offering significant adjustability.

Intended Use:

Versatile for both spirited road riding and light off-road excursions, with a focus on agile handling and power delivery.

📋 Manual Details

Primary Coverage:

Owner's Manual / User Manual

Estimated Page Count:

Likely 100-200 pages (typical for an owner's manual of this era and type)

Manual Type:

Official Owner's User Manual

Language:

English

File Format:

PDF

Delivery Format:

PDF Download

📖 Manual Coverage

Engine Systems:

Engine operation, basic maintenance, break-in procedure, cooling system (if applicable to model variant).

Chassis Systems:

Frame, suspension (forks, shock absorber), wheels, tires, brakes (front and rear), steering.

Electrical Systems:

Battery, lighting, ignition system basics, instrument panel functions, horn.

Fuel System:

Fuel tank, fuel lines, carburetor operation (likely Mikuni BST/BSR based on LC4 platform), fuel filter access.

Exhaust System:

Exhaust pipe and silencer identification, basic inspection.

Routine Maintenance:

Oil changes, air filter cleaning/replacement, spark plug inspection, chain adjustment and lubrication, brake fluid level checks, tire pressure checks.

Operator Controls:

Identification and operation of all controls: throttle, clutch, brakes, gear shifter, starter, kill switch, lights, horn, choke.

Safety Precautions:

Riding safety tips, protective gear recommendations, pre-ride inspection checklist.

Troubleshooting Basic:

Basic guidance for common operational issues (e.g., starting problems, unusual noises).

Storage Procedure:

Recommendations for short-term and long-term storage.

Depth Level:

Owner-level operations, basic maintenance, safety, and troubleshooting. Does not typically include in-depth engine rebuilds, transmission overhauls, or complex electrical diagnostics. Focus is on user understanding and routine care.

📊 Manual Specifications

Zoom Functionality:

Yes

Searchable Text:

Likely yes, if the PDF was created from a digital source with OCR capabilities.

Printability:

Yes

Manual Quality:

Factory Quality

Binding Type:

N/A (Digital PDF)

Paper Type:

N/A (Digital PDF)

Shipping:

No Shipping Cost

Delivery Time:

Instant Download

Guarantee:

Full Money Back Guarantee

⚙️ Engine Specifications

Engine Type:

Four-stroke, single-cylinder, liquid-cooled (often with an oil cooler integrated)

Displacement:

625cc (approximately)

Bore X Stroke:

Typical for LC4: ~100mm x 80mm (exact figures to be verified in the manual)

Valve Train:

SOHC (Single Overhead Camshaft), 4 valves

Compression Ratio:

Typically around 10.0:1 to 11.5:1 (exact to be confirmed)

Horsepower:

Estimated 45-55 HP (at crankshaft) (exact figures in manual)

Torque:

Estimated 50-58 Nm (at crankshaft) (exact figures in manual)

Carburetor Type:

Likely a single Mikuni BST 40 or similar CV (Constant Velocity) carburetor.

Fuel Type:

Unleaded gasoline, minimum octane rating specified by KTM (likely 91 AKI / 95 RON).

Oil Type:

KTM recommends specific motorcycle-specific engine oil, often a high-quality synthetic or semi-synthetic. Manual will specify viscosity (e.g., 10W-50, 15W-50) and API/JASO standards.

Oil Capacity:

Approximately 1.2 - 1.5 liters (including filter), exact figure in manual.

🔧 Transmission

Transmission Type:

Constant mesh, 6-speed sequential gearbox.

Clutch Type:

Wet multi-plate clutch, hydraulically operated.

Final Drive:

Chain drive (O-ring or X-ring chain).

📐 Dimensions

Wheelbase:

Approximately 1470 mm / 57.9 inches (typical for this model, exact in manual).

Seat Height:

Approx. 900-920 mm / 35.4-36.2 inches (subject to suspension setup, exact in manual).

Dry Weight:

Around 135-140 kg / 298-309 lbs (exact in manual).

Fuel Tank Capacity:

Approximately 10-12 liters / 2.6-3.2 US gallons (exact in manual).

Front Wheel Size:

17-inch

Rear Wheel Size:

17-inch

Front Tire Size:

Typically 120/70-17 (supermoto specific)

Rear Tire Size:

Typically 160/60-17 (supermoto specific)

🛡️ Safety Features

Safety Standards:

Adherence to applicable motorcycle safety regulations for the model year and region of sale.

Braking System Front:

Hydraulically operated, single or dual disc brake (likely Brembo calipers), specify disc size (e.g., 320mm front).

Braking System Rear:

Hydraulically operated, single disc brake (e.g., 240-260mm rear disc).

Lighting:

Headlight, taillight, brake lights, turn signals.

Horn:

Standard horn.

💡 Technology Features

Instrument Cluster:

Digital or analog/digital combination cluster displaying speed, RPM, odometer, trip meters, indicator lights (neutral, turn signals, oil pressure, etc.).

ABS:

ABS was not standard or common on performance supermotos of this era; likely not equipped unless specified as an option or later variant.

Connectivity Features:

None typical for this model year and type of motorcycle; focused on mechanical and riding performance.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000-5,000 km or 6-12 months, whichever comes first. The manual will provide precise intervals.

Air Filter Cleaning:

Frequent checks recommended, especially in dusty conditions. Intervals in the manual will likely be shorter than oil changes.

Spark Plug Replacement:

Usually around 10,000-15,000 km, but inspection intervals are more frequent. Manual will specify.

Chain Maintenance:

Lubrication and adjustment recommended every 500-1000 km, and pre-ride checks.

Valve Clearance Check:

Likely around 10,000-20,000 km, manual will detail this critical interval.

Brake Fluid:

DOT 4 (or specified alternative) hydraulic brake fluid. Manual will detail replacement interval.

Coolant:

If liquid-cooled, a mixture of distilled water and appropriate antifreeze (e.g., ethylene glycol based). Manual will specify ratio and type.

Common Lc4 Points:

While robust, some LC4 models of this era could experience occasional issues like cam chain tensioner wear, carburetor jetting sensitivity to altitude/temperature, and starter clutch wear. The manual will help users identify and address normal wear and tear.

📚 Vehicle History

Brand Focus:

KTM is renowned for its off-road racing heritage and performance motorcycles, particularly in motocross, enduro, and rally raid.

Lc4 Platform:

The LC4 engine platform has a long history within KTM, evolving over many years and powering various models from adventure bikes to supermotos, known for its torque and robustness.

Sxc Designation:

The SXC designation typically refers to a sport-oriented, often street-legal, variant of the LC4, leaning towards supermoto styling and performance.

Manufacturing Location:

Primarily Austria for KTM motorcycles.

🏆 Awards & Recognition

Motorcycle Reviews:

KTM LC4 models historically received praise for their powerful engines, agile handling, and off-road pedigree, often performing well in comparison tests for dual-sport and supermoto categories.

Performance Ratings:

Consistently rated highly for performance and rider engagement in the supermoto segment.