KTM LC4 Workshop Manual for 400 SC, 620 SC, 640 LC4-E / Adventure & 660 SMC (1998–2003)
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Sample pages from the KTM LC4 Workshop Manual for 400 SC, 620 SC, 640 LC4-E / Adventure & 660 SMC (1998–2003) manual
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Models Covered & Key Technical Specifications
- LC4 400 SC (1998)
- LC4 620 SC (1999)
- LC4 640 LC4-E (2000)
- LC4 640 ADVENTURE (2001)
- LC4 625 SC (2002)
- LC4 660 SMC (2003)
Professional Workshop Service Manual & Technical Specifications
The Essential KTM LC4 Workshop Manual: Comprehensive Repair Guide (1998–2003)
The KTM LC4 Comprehensive Repair Manual is the definitive, factory-issued resource for maintaining and servicing your high-performance single-cylinder motorcycle. If you own an LC4 model from the highly desirable 1998 to 2003 era, this manual provides the professional, step-by-step guidance necessary to perform everything from routine maintenance to a complete engine overhaul. Stop guessing and start repairing with confidence.
Unmatched Model Coverage: Specifics You Need
This manual provides dedicated service procedures and technical specifications for the entire 400cc to 660cc LC4 range, ensuring you have the exact data required for your specific bike. It covers the crucial models listed below:
- LC4 400 SC (1998)
- LC4 620 SC (1999)
- LC4 640 LC4-E (2000)
- LC4 640 ADVENTURE (2001)
- LC4 625 SC (2002)
- LC4 660 SMC (2003)
Key Sections and In-Depth Procedures
This is more than just a booklet; it's an extensive guide structured for practical use in the garage. The detailed sections ensure that both seasoned mechanics and DIY riders can follow along:
Engine & Mechanical Servicing
- Complete Engine Workflow: Detailed instructions for removing, refitting, disassembling, and precisely assembling the engine components.
- Component Servicing: Dedicated chapters on the cylinder head, clutch, transmission, and crankshaft, including critical measurement and wear limits.
- Fuel System Mastery: In-depth procedures for carburetor disassembly, cleaning, assembly, and fine-tuning setup for optimal power delivery.
Electrical & Troubleshooting
- Comprehensive Wiring Diagrams: Clear, multi-color wiring layouts to simplify electrical fault diagnosis, covering ignition, charging, and lighting circuits.
- Troubleshooting Guide: A systematic chapter dedicated to diagnosing common issues, saving you time and frustration.
Chassis & Maintenance
- Periodic Maintenance Schedules: Exact service intervals and checklists to keep your LC4 running reliably and extend its service life.
- Technical Specifications: Tables listing torque specifications, fluid capacities, and crucial dimensional data for all covered models.
The Value Proposition: Why You Need This Manual
If you ride or maintain an aging KTM LC4—especially one of the high-performance SC, SXC, or SMC variants—access to factory specifications is essential.
- Save Time & Money: Avoid costly mistakes by following factory-approved repair methods and torque specs.
- Maintain Peak Performance: Properly tuned engines and calibrated suspension are key to the LC4's performance legacy.
- Increase Resale Value: Demonstrate that your motorcycle has been maintained according to professional standards.
- Clear, High-Quality Illustrations: The manual is filled with detailed figures and exploded views that clearly illustrate component placement and assembly steps.
The KTM LC4 Repair Manual is the single best investment you can make to preserve the power, reliability, and riding pleasure of your 1998–2003 KTM LC4 motorcycle.
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