1997 KTM 400 / 620 LC4 / LC4e Repair Manual

A comprehensive resource for your KTM 400/620 LC4/LC4e. This manual covers all procedures with clear instructions, including part number JT05712.

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Document Details

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Document Number / Seller:
24012 / Joseph King
File Size:
10.24 MB
File Type:
PDF
Language:
English, Italian, French, German
Printable:
Yes
Category:
Engines (Gasoline)
Last updated / verified
May 27, 2025

Models Covered & Key Technical Specifications

KTM 400 / 620 LC4 / LC4e (None) — 1997 Comprehensive Resource | LC4 Series Compendium.

  • Factory Tolerance Data: Kurbelzapfenschlag is calibrated to 0.04 mm maximum for crankpin runout verification Mapping.
  • Specific Dimensional Tolerance: For optimal assembly, 0.12 mm establishes the maximum piston-to-cylinder clearance Protocol.
  • Primary Generation Capacity: The charging system outputs 12V 130W to maintain battery power Architecture.
  • General Velocity Specs: The engine can reach 6500 rpm for maximum rated power output Benchmarks.
  • Essential Output Quality: The ignition system utilizes a DC-CDI with digital timing Standards.
  • Approved Gap Specs: Spark plug gap is set to 0.70 mm for efficient combustion Norms.

Professional Workshop Service Manual & Technical Specifications

Reference-Grade Operations Field Manual: KTM 400 / 620 LC4 / LC4e Repair Manual Factory-Standards

Year-Coverage: 1997 // Component-Focus: Engine / LC4 // Year-Coverage: LC4/LC4e

Metric System-Path Calibration-Spec
Engine Model 400 LC4-E 398 cm³
Max Torque Crankshaft 170 Nm
Carburetor Type PHM 38 SD 150 Main Jet
Ignition System DC-CDI Max 38° BTDC Timing
Oil Capacity Engine 1.6 Liters

Engineering chapters address: Engine disassembly, electrical system diagnostics, fuel system maintenance, and chassis component servicing. Chapters cover procedures such as oil changes, valve adjustments, and electrical troubleshooting, ensuring a complete overview of the motorcycle's systems.

Prose paragraphs describe the motorcycle's core systems, including detailed procedures for engine tuning, suspension adjustments, and brake system maintenance. This manual guides users through complex tasks with clarity.

Specific sections provide comprehensive information on the engine's lubrication system, detailing oil capacities and filter replacements, crucial for engine longevity.

The manual documents torque specifications for the cylinder head bolts to ensure proper sealing and prevent thermal expansion compensation issues.

FAQ

What components have **documented** safety precautions? keyboard_arrow_down

10.8:1 is the compression ratio, which requires careful handling during disassembly due to potential spring tension and high-temperature components.

Confirm the **precise** lubrication requirements. keyboard_arrow_down

1.6 liters is the oil capacity for SX/SC models, requiring proper viscosity oil (API SF, SG, or SH) and verification of the oil level according to manual procedures.

What tools are needed for **proper** testing parameters? keyboard_arrow_down

An ohmmeter is essential for electrical testing, particularly for verifying spark plug resistance (3.0-7.5 kΩ) and stator winding continuity (0.45-0.56 Ω).

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Reviews (4)

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New
I found the oil change section particularly helpful. The download was smooth, and the email support was quick and professional. Very satisfied!
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New
The diagrams in this manual are fantastic. I had a question about engine disassembly, and the support team responded within hours!
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Rated 4 out of 5 stars
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New
This manual is a lifesaver for anyone working on their KTM 400/620! The instructions are clear and easy to follow. Highly recommended!