KTM 2006 660 SMC User Manual

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KTM-Sportmotorcycle AG

A–5230 Mattighofen

www.ktm.at

KTM Group Partner

7/2005 FOTO: MITTERBAUER

660 SMC

OWNER’S MANUAL 2006

ART. NR. 3.211.77EN

ENGLISH

Table of Contents

Questions and Answers:

B
Bruce HendersonAug 14, 2025
How to start a KTM 2006 660 SMC Motorcycle if the engine will not start?
- J
  Javier MolinaAug 14, 2025
  To address an engine that won't start on your KTM Motorcycle, ensure the ignition and emergency OFF switch are on, the fuel tap is open, and there's sufficient fuel in the tank. Avoid using the choke unnecessarily. If the motorcycle has been idle for over a week, drain old fuel from the float chamber. For a flooded engine, 'pump it free' by using the hand decompression lever, fully revving the engine, and actuating the kickstarter multiple times. Dry or replace a sooty or wet spark plug, adjusting the electrode gap to 0.9 mm. Check for a strong spark by grounding the spark plug. Inspect and clean the ignition system connectors, emergency OFF switch, and carburetor, ensuring the carburetor is correctly fitted.
P
Patrick NormanAug 17, 2025
Why KTM Motorcycle engine does not rev high?
- M
  Mrs. Dominique BellAug 18, 2025
  If your KTM Motorcycle engine is not revving high enough, tighten the loose carburetor jets. If the problem persists, have the electronical ignition system checked.
A
Adam BlackAug 20, 2025
What to do if my KTM 2006 660 SMC Motorcycle engine will not reach full power?
- A
  Amanda ReyesAug 21, 2025
  To restore full power to your KTM Motorcycle engine, begin by cleaning and inspecting the fuel system and carburetor, and replace the float if necessary. Clean or replace the air filter. Check the exhaust system for damage and replace the glass fiber yarn in the exhaust silencer if needed. Adjust the valve gap. Finally, have the ignition system checked.
J
Jacob GutierrezAug 25, 2025
Why does my KTM 2006 660 SMC engine get too hot?
- A
  Amanda NormanAug 25, 2025
  If your KTM Motorcycle engine is overheating, refill the cooling liquid and check the cooling system for leaks. Ensure adequate airflow and clean the radiators with a water jet. Replace the cooling liquid, using antifreeze. Shorten or replace any bent cooling hoses. Inspect the thermostat for proper function (opening temperature 70°C). Contact a KTM dealer to check the thermoswitch. Verify the fan operates correctly by starting the engine and bypassing the connections to the thermoswitch.
K
Kristen YoungAug 27, 2025
What to do if my KTM Motorcycle engine stops or sputters in carburetor?
- L
  lindabarrettAug 27, 2025
  If your KTM Motorcycle engine stops or sputters, start by cleaning and inspecting the fuel system and carburetor. Also, check the intake flange and carburetor to ensure they are firmly in place.
R
Rick RodriguezAug 31, 2025
How to fix a KTM Motorcycle engine that will not idle?
- R
  robert29Aug 31, 2025
  To fix a KTM Motorcycle engine that won't idle, start by dismounting the carburetor and cleaning the jets. Adjust the carburetor screws as needed. If the issue persists, have the ignition system checked.
J
jose41Sep 3, 2025
What causes high oil consumption in a KTM Motorcycle?
- L
  Lisa StewartSep 3, 2025
  To address high oil consumption in your KTM Motorcycle, first, dislocate or replace any buckled gearing ventilation hoses. Next, check the engine oil level when the engine is warm and correct if necessary. If the issue continues, use a thicker engine oil.
S
Stephanie WeberSep 6, 2025
What to do if all switched on lamps blown out on KTM 2006 660 SMC?
- B
  bowendanaSep 6, 2025
  If all the switched-on lamps in your KTM Motorcycle have blown out, remove the right side cover and check the connections. Have the capacitor and voltage regulator checked.
M
millerpatrickSep 10, 2025
How to restore data in KTM Motorcycle electronic speedometer?
- M
  michellebraunSep 10, 2025
  To restore the data in your KTM Motorcycle electronic speedometer, replace the battery.

KTM 2006 660 SMC Specifications

General

Engine Type	Single cylinder, 4-stroke
Displacement	654 cc
Compression Ratio	11.5:1
Ignition	Kokusan digital
Cooling	Liquid cooled
Transmission	5-speed
Front Brake	Brembo 4-piston caliper, 320 mm disc
Rear Brake	Brembo 1-piston caliper, 220 mm disc
Seat Height	910 mm
Fuel Capacity	12 liters
Power	63 hp
Fuel System	Keihin FCR 41
Front Suspension	WP USD 48 mm
Rear Suspension	Monoshock
Front Tire	120/70-17
Rear Tire	160/60-17
Cooling System	Liquid

Summary

Important Information and Introduction

Important Warnings and Advice

Crucial notices regarding safety, operating instructions, and potential hazards.

Motorcycle Introduction and Usage Tips

Welcomes the owner and provides initial guidance for motorcycle operation and care.

Motorcycle Operation and Controls

Serial Number Locations

Identifies the location of chassis and engine serial numbers for registration purposes.

Electronic Speedometer Functions

Details the digital speedometer modes, settings, and indicators.

Control Levers and Switches

Explains the function of handlebar controls, levers, and pedals.

Riding and Starting Procedures

Pre-Ride Checks and Initial Operation

Essential checks before starting and initial riding advice for safe operation.

Engine Starting Procedures

Guides for starting cold, warm, or flooded engines, including safety warnings.

Shifting, Riding, Braking, and Parking

Techniques for gear shifting, riding, braking, and safe parking.

Maintenance and Service

Periodic Maintenance Schedule

Outlines recommended service intervals and tasks for regular upkeep.

Chassis Component Maintenance

Covers fork, shock absorber, steering head bearing, and wheel checks.

Drivetrain and Brake System Maintenance

Details chain adjustment, brake fluid, pads, and disc checks.

Engine and Cooling System Maintenance

Covers air filter, cooling system, and exhaust system service.

Carburetor, Clutch, and Oil System Maintenance

Details clutch, carburetor, and engine oil checks and changes.

Technical Specifications and Wiring

Engine Technical Specifications

Lists detailed engine design and performance parameters.

Chassis Technical Specifications

Details frame, suspension, wheels, and dimensions.

Tightening Torques for Chassis Components

Provides critical torque values for chassis assembly and repair.

Wiring Diagram and Cable Colors

Electrical system layout and cable identification for diagnostics.

Troubleshooting and Storage

Common Motorcycle Troubleshooting

Diagnoses and remedies for engine starting and running issues.

Cleaning, Conservation, and Storage

Procedures for cleaning, winter storage, and post-storage re-initiation.

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