🏷️ Basic Information

Make:

KTM

Model:

690 DUKE

Year:

2008

Type:

Motorcycle Owner's Manual

Oem Part Number:

3206908EN

👋 Introduction

Market Position:

The 2008 KTM 690 DUKE is positioned as a lightweight, agile, single-cylinder naked sportbike, catering to riders seeking a spirited and engaging street riding experience with a focus on performance and handling.

Competitive Analysis:

Competes with other single-cylinder naked bikes from manufacturers like Husqvarna, Yamaha (MT-07), and Triumph (Street Triple variants of that era), offering a distinctive Austrian performance and design ethos.

Key Features:

Powerful LC4 engine, lightweight chassis, minimalist design, sharp handling, premium componentry (e.g., WP suspension, Brembo brakes).

📋 Manual Details

Coverage Areas:

Operation, Maintenance, Troubleshooting, Safety, Specifications, General Information

Page Count:

Approximately 150 pages

Manual Type:

Owner's Manual

Language:

English

Format:

Printed Book

📖 Manual Coverage

Systems Covered:

Engine, Fuel System, Ignition System, Exhaust System, Drivetrain, Suspension, Brakes, Electrical System, Chassis, Controls, Lighting, Instruments, Wheels and Tires, Cooling System

Procedures Included:

Pre-ride inspection, Starting procedures, Riding techniques, Break-in procedures, Routine maintenance (oil changes, filter replacements, chain adjustment, spark plug checks), Tire pressure checks, Brake pad checks, Suspension adjustment, Electrical checks, Troubleshooting basic issues, Safe operation guidelines, Cleaning and storage

Technical Depth:

Covers essential owner-level maintenance and operation. Provides detailed information for safe and effective use, basic checks, and routine adjustments. Does not cover in-depth engine rebuilds or complex electrical diagnostics, which would be found in a service manual.

📊 Manual Specifications

File Format:

N/A (Printed)

Print Quality:

High-quality paper with clear illustrations and legible text.

Binding Type:

Perfect bound or stapled paperback

Paper Type:

Durable, likely coated paper to withstand workshop environments.

⚙️ Engine Specifications

Engine Type:

Single-cylinder, four-stroke, liquid-cooled, SOHC

Displacement:

654 cc (actual displacement may vary slightly based on specific sub-model or market)

Bore X Stroke:

102 mm x 80 mm

Compression Ratio:

12.3:1

Horsepower:

Approximately 63 hp (47 kW) @ 7,500 rpm

Torque:

Approximately 64 Nm (47 lb-ft) @ 6,000 rpm

Fuel System:

Electronic fuel injection (Keihin EFI)

Throttle Body Size:

46 mm

Ignition Type:

Digital CDI with dual ignition

Cooling Medium:

Liquid

Oil Type Recommendation:

SAE 10W-50 (refer to manual for specific KTM recommendations)

Oil Capacity:

Approx. 1.7 liters (1.8 US qt)

🔧 Transmission

Transmission Type:

6-speed, constant mesh

Clutch Type:

Hydraulically operated APTC slipper clutch

Final Drive:

Chain drive, O-ring sealed

📐 Dimensions

Length:

Approximately 2,150 mm (84.6 in)

Width:

Approximately 770 mm (30.3 in)

Height:

Approximately 1,110 mm (43.7 in) to seat

Seat Height:

Approximately 865 mm (34.1 in)

Dry Weight:

Approximately 163 kg (359.4 lbs)

Fuel Tank Capacity:

12 liters (3.2 US gal)

🛡️ Safety Features

Safety Ratings:

As a motorcycle, does not undergo traditional automotive crash testing. Safety is inherent in design and rider responsibility. Manual emphasizes safe riding practices.

Active Features:

High-performance Brembo brakes (dual front discs, single rear disc), responsive chassis, rider aids for stability (e.g., slipper clutch).

Passive Features:

Ergonomic rider controls, comprehensive lighting, clear instrumentation, ABS typically optional or absent on this model year for a more raw experience.

💡 Technology Features

Infotainment Features:

Basic LCD instrument cluster displaying speed, RPM, odometer, trip meter, gear position indicator, fuel level, and warning lights. No advanced infotainment system.

Driver Assistance Features:

APTC slipper clutch for smoother downshifts and reduced rear-wheel hop under aggressive braking.

Connectivity Features:

None.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000 - 7,500 km (3,000 - 4,500 miles) or annually, whichever comes first. Refer to manual for exact mileage.

Valve Clearance Check Interval:

Typically around 10,000 km (6,000 miles).

Chain Maintenance Interval:

Check and lubricate every 500-1,000 km (300-600 miles) and adjust as needed.

Coolant Type:

Antifreeze mixture (e.g., Engine Ice or equivalent ethylene glycol-based coolant, 50/50 mix with distilled water).

Brake Fluid Type:

DOT 4

Clutch Fluid Type:

DOT 4 (hydraulic clutch)

Known Issues:

Potential for increased vibration due to single-cylinder configuration, occasional issues with fuel pump or EFI sensors if not maintained, chain wear if not properly tensioned and lubricated. Early models might have had specific recalls or service bulletins regarding engine or electrical components.

Oil Filter Part Number:

Commonly KTM part number 77003015000 or equivalent aftermarket (e.g., K&N KN-152, Hiflofiltro HF152).

Spark Plug Type:

NGK CR9E or similar (confirm specific recommendation in manual).

📚 Vehicle History

Brand Heritage:

KTM, an Austrian manufacturer, is renowned for its off-road prowess and has successfully transitioned into the streetbike market, emphasizing performance, 'Ready to Race' philosophy, and distinctive design.

Model Evolution:

The 690 DUKE series represents KTM's commitment to the single-cylinder platform, evolving from earlier LC4 models to offer more refined performance, modern electronics, and a sharper naked bike aesthetic.

Production Years Relevant:

2008 is part of the first generation of the 690 DUKE, which commenced production around 2007.

🏆 Awards & Recognition

Recognitions:

While specific awards for the 2008 model year might be scarce, the 690 DUKE platform generally receives praise in motorcycle media for its performance, handling, and unique character.

Ratings:

Consistently rated highly for its engaging ride, powerful single-cylinder engine, and sharp chassis dynamics by motorcycle publications.