KTM 640 LC4 - Manuals

ENGLISH 4 Page SERIAL NUMBER LOCATIONS .............................................5 Chassis number ................................................................5Engine number, engine type .............................................5 OPERATION INSTRUMENTS .........................................

ENGLISH 5 Chassis number The chassis number is stamped on the right side of the steering head tube.Write this number into the relevant area on page 1. Engine number, engine type The engine number and engine type are stamped on the right hand side ofthe engine below the chain sprocket. Write this num...

ENGLISH 6 Multi-functional digital speedometer The universal instrument is divided into 3 parts.Use the MODE and SET 1 button to change the display and the basic set- tings in the display.Display 2 shows all of the information that may be of interest to you. 5 display modes can be selected with the ...

ENGLISH 7 Setting options in the display KILOMETERS OR MILES.You can have the speed and distance shown in kilometers or miles in thedisplay. The display can be adapted to the respective country on long-distance trips.To switch from kilometers to miles, switch on the ignition and press theMODE 1 butt...

ENGLISH 8 Cooling liquid temperature display The temperature display 1 is shown in 7 bars. The more bars that light up, the hotter the cooling liquid. When the lowest bar lights up, the coolingliquid has reached a temperature of approx. 40°C (104°F). When the upperbar lights up 120°C (248°F), all of...

ENGLISH 9 Combination switch The rocker switch LIGHTS 1 actuates the high beam or low beam. = High-beam light = Low-beam light The light signal (high beam) is actuated with button 2 . The indicator switch 3 returns to central position after actuation. Press flasher switch towards switch housing to s...

ENGLISH 10 Fuel tap OFF In this position the fuel tap is closed. No fuel may flow to the carburetor. ON When using the motorcycle, the twist grip must be set to the ON position. Now fuel may flow to carburetor. In this position the tankempties down to the fuel reserve of approx. 2.5 liters. RES The ...

ENGLISH 11 Compression damping of fork The compression damping is to be set at the lower end of the fork tubes. Itonly regulates the degree of damping during compression. Remove closingcap A . By using the knob 1 (COM), the degree of damping of the compression can be adjusted. Turn the knob clockwis...

ENGLISH 12 GENERAL TIPS AND WARNINGS FOR STARTING THE MOTORCYCLE Instructions for initial operation – Verify that your KTM dealer performed the PREPARATION OF VEHICLE jobs (see Customer Service Manual). – Read these operating instructions carefully before your first ride. – Enter the chassis, engine...

ENGLISH 13 Check the following before each start When you start, the motorcycle must be in perfect mechanical condition.For safety reasons, you should make a habit of performing an overall checkof your motorcycle before each start. The following checks should be performed: 1 CHECK OIL LEVEL Insuffic...

ENGLISH 14 Starting when the engine is cold 1 Open the fuel tap 1 2 Switch on ignition (turn ignition key 2 into position ). 3 Switch on emergency OFF switch 3 . 4 Switch transmission to idle (green indicator lamp N 4 lights up). 5 Operate cold starting device (choke) 5 . 6 Do not accelerate; operat...

ENGLISH 15 Kickstart instructions Be sure to kick up the side stand before you start the engine toavoid any damage.Start as described above, then push the kickstarter hard ALLTHE WAY. WARNING – W HEN STARTING THE ENGINE , MAKE SURE THAT YOU ALWAYS WEAR STURDY MOTORCYCLING BOOTS IN ORDER TO AVOID INJ...

ENGLISH 16 Stopping and parking Apply the brakes fully and put the engine into neutral. To stop the engine,switch off the ignition. Turn the fuel tap to the OFF position, park on anarea where the ground is firm, and lock the motorcycle. WARNING – ALWAYS PARK YOUR MOTORBIKE ON A SOLID AND HORIZONTAL ...

ENGLISH 18 PERIODIC MAINTENANCE SCHEDULE 1. Service after 1000 km 2. Service after5000 km, then every 5000 km or once a year IF MOTORCYCLE IS USED FOR COMPETITION 5000 KM SERVICE SHOULD BE CARRIED OUT AFTER EVERY RACE! S ERVICE INTERVALLS SHOULD NEVER BE EXCEED BY MOOR THAN 500 KM . M AINTENANCE WOR...

ENGLISH 20 WARNING ALL SERVICING AND ADJUSTMENT PROCEDURES DESIGNATED BY AN ASTERISK * REQUIRE THE KNOWLEDGEAND SKILLS OF A PROFESSIONAL. FOR YOUR OWN SAFETY, ALWAYS HAVE SUCH WORK PERFORMED BY ASPECIALIZED KTM DEALER WHERE YOUR MOTORCYCLE WILL BE OPTIMALLY SERVICED BY APPROPRIATELYQUALIFIED,SKILLED...

ENGLISH 21 Checking and adjusting steering head bearing * Check steering head bearing for play periodicaly. To check this putmotorcycle on a stand so that the front wheel is off the ground. Now try tomove the fork forward and backward. To adjust, loosen the five clamp screws 1 of the top triple clam...

ENGLISH 22 Changing the spring preload of the shock absorber KTM sets the shock absorber for a driver only, weighing approximately 75kg (165 lb). If you want to take a passenger with you, of if you weigh considerably more or less than 75 kg (165 lb), you should change the springpreload accordingly A...

ENGLISH 23 Checking chain tension To check, jack up the motorcycle on the center stand or frame until it nolonger touches the ground.Press the chain up approx. 30 mm behind the end of the chain slidingcomponent. The chain should barely touch the swing arm when the upperchain part A is tensioned. If ...

ENGLISH 24 Chain maintenance For long chain life, good maintenance is very important. X-ring chainsrequire only modest maintenance. The best way is to use lots of water, butnever use brushes or solvents. After letting the chain dry, you can use aspecial X-ring chain spray (Motorex Chainlube Racing)....

ENGLISH 25 General informations about KTM disc brakes BRAKE CALIPERS (LC4):The brake calipers of this series “float“. This means that the brake calipersare not solidly attached to the caliper support. Thus, the brake pads arealways in optimum contact with the brake disc. Secure the screws of thecali...

ENGLISH 26 Adjusting of free travel at the hand brake lever (LC4) Free travel at the hand brake lever may be readjusted by using adjustingscrew 1 . In this way, the position of the point of pressure (i.e., the resistance you feel on the hand brake lever when the brake pads are pressed against the br...

ENGLISH 27 Checking the front brake pads (LC4) The brake pads can be inspected from below. The linings must be at least 1 mm (0.04 in) thick. WARNING A T THEIR MOST WORN POINT BRAKE PAD LININGS SHOULD NOT BE THINNER THAN 1 MM , OTHERWISE THEY COULD LEAD TO BRAKE FAILURE . F OR YOUR OWN SAFETY DON ’ ...

ENGLISH 28 Checking rear brake fluid level The reservoir for the rear disc brake is located on the left-hand side of thevehicle next to the carburetor carburetor connection boot. The brake fluidlevel may not drop below the „MlN” marking when the vehicle is in anupright position. WARNING I F THE BRAK...

ENGLISH 29 Dismounting and mounting the front wheel (LC4) To remove the front wheel, jack the motorcycle up on its frame so that thefront wheel no longer touches the ground.Loosen both clamp screws 2 on the left fork leg. Then loosen the collar nuts 1 before loosening the clamp screws 2 on the right...

ENGLISH 30 Dismounting and mounting the rear wheel To remove the rear wheel, jack the motorcycle up on its frame so that therear wheel no longer touches the ground.Loosen the collar nut 1 , remove chain tensioner 2 , hold the rear wheel and pull out the wheel spindle 3 until the rear wheel is free b...

ENGLISH 31 640 LC4 front rear Road, driver only 1,8 bar (26psi) 2,0 bar (29psi) Road, with passenger 2,0 bar (29 psi) 2,2 bar (31psi) 640 LC4 Supermoto front rear Road, driver only 2,0 bar (29psi) 2,2 bar (31psi) Road, with passenger 2,2 bar (31psi) 2,4 bar (34psi) T I R E S - A I R P R E S S U R E ...

ENGLISH 32 Battery The battery is located under the seat and is maintenance-free.It is not necessary to check the electrolyte level or to refill water. Simplykeep the battery poles clean and slightly grease them with an acid-freegrease if necessary. REMOVING THE BATTERY:Remove screws 1 and swing ret...

ENGLISH 33 Fuses Fuse box A is located under the seat. See "Removing the seat" to remove and mount the seat.The fuses are numbered on the inside of the fuse box.The fuses marked "RES" are spare fuses. Main fuse 1 (20 amperes) protects all power consumers against short circuits. Fuse ...

ENGLISH 34 Exchanging the brake light and tail light bulb Remove the cap 1 on the underside of the license plate retainer. Turn the lamp socket 2 approximately 30° counterclockwise and pull it out of the tail light housing.Slightly depress the bulb, turn it approx. 30° counterclockwise and pull itou...

ENGLISH 35 Checking the cooling liquid level The cooling liquid should be 10 mm (0.4 in) above the cooling elementswhen the engine is cold (cf. diagram). In the event of the cooling liquidbeing drained, always fill the system before hand, then top off while theengine is running. WARNING – I F POSSIB...

ENGLISH 36 Changing the original position of the clutch lever The adjusting screw 1 can be used for individual adjustment of the original position of the clutch lever, thus allowing adjustment to an optimal positionfor every hand size.Turning the adjusting screw clockwise reduces the distance betwee...

ENGLISH 37 Checking and adjusting the choke cable play * The choke lever must always have a play of approx. 4 mm (0.16 in). ! CAUTION ! I F THERE IS NO PLAY IN THE CHOKE CABLE , THE BORE OF THE COLD STARTER SYSTEM CANNOT BE COMPLETELY CLOSED . T HIS RESULTS IN HIGH FUEL CONSUMPTION , AN UNEVEN RUNNI...

ENGLISH 38 Draining the carburetor float chamber * Following every wet-cleaning procedure, the float chamber of thecarburetor should be drained in order to remove any water that may havepenetrated into it. Water in the float chamber causes engine malfunction.Carry out this job with the engine being ...

ENGLISH 39 Oil circuit The oil pump 1 pumps the motor oil past the bypass valve 2 and through the oil filter 3 . Beyond the oil filter, one of the oil lines forks off to a jet 4 that injects motor oil to the piston pin bearing and the piston head. Thesecond oil line leads the main oil flow to the fr...

ENGLISH 40 To facilitate bleeding of the oil system, we have added a hose connectionpiece and a plastic hose to the set of tools. Take an empty oil can (1 liter)and drill a 7 mm (0.28 in) -diameter hole into the lid. Screw the hoseconnection piece into the lid from the outside, and secure it from th...

ENGLISH 41 TROUBLE SHOOTING If you let the specified maintenance work on your motorcycle be carried out, disturbances can hardly be expected. Should an erroroccur nevertheless, we advise you to use the trouble shooting chart in order to find the cause of error.We would like to point out that many op...

ENGLISH 44 Clean your motorcycle regularly in order to maintain the beauty of its plastic surfaces.The best manner would be to use warm water that has been mixed with a normal trade washing detergent and a sponge. The harddirt can be removed before with the help of a soft water jet. ! CAUTION ! N EV...

ENGLISH 45 TECHNICAL SPECIFICATIONS - CHASSIS 640 LC4, 640 LC4 SUPERMOTO 2004 640 LC4 640 LC4 Supermoto Frame Central chrome-moly-steel frame Fork W hite P ower – U p S ide D own 4357 MXMA W hite P ower – U p S ide D own 4860 MXMA Wheel travel front/rear 275 / 290 mm (11 / 11.6 in) 265 / 300 mm (10....

ENGLISH 46 Collar nut front axle M16x1.5 40 Nm Collar nut rear axle M20x1.5 80 Nm Shock absorber top M10 45 Nm Shock absorber bottom M10 45 Nm Collar screws brake disk front/rear M6 (10.9) Loctite 243 + 10 Nm Screw brake caliper front (LC4) M8 Loctite 243 + 25 Nm Screw brake caliper front (Supermoto...

ENGLISH 47 Engine 640 LC4 Design Liquid-cooled single cylinder 4-stroke engine with balancer shaft and electric starter Displacement 625 ccm Bore / Stroke 101 / 78 mm Ratio 11.7 : 1 Fuel unleaded premium gasoline with at least RON 95 (USA = Premium RON 91) (RON 80-94 for other ignition curve Valve t...

ENGLISH 48 Page Accessories and payload .....................................................12 Activating the ignition curve for low-octane fuel .................37 Adjisting of free travel at the hand brake lever ....................26 Adjust idling speed .............................................