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400/620
BEDIENUNGSANLEITUNG
OWNER'S HANDBOOK
MANUALE D'USO
SX/SC/EGS
MANUEL D'UTILISATION
MANUAL DE INSTRUCCIONES
ART. NR. 3.205.30
9.97
'98

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Summary of Contents for KTM 400 SC

  • Page 1 400/620 BEDIENUNGSANLEITUNG OWNER’S HANDBOOK MANUALE D’USO SX/SC/EGS MANUEL D’UTILISATION MANUAL DE INSTRUCCIONES ART. NR. 3.205.30 9.97 ’98...
  • Page 3 IMPORTANT WE STRONGLY SUGGEST THAT YOU READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE GOING ON YOUR FIRST RIDE. IT CONTAINS A GREAT DEAL OF INFORMATION AND ADVICE WHICH WILL HELP YOU USE AND HANDLE YOUR BIKE PROPERLY. IN YOUR OWN INTEREST, PLEASE PAY PARTICULAR ATTENTION TO NOTICES THAT ARE MARKED AS FOLLOWS: WARNING IGNORING THESE INSTRUCTIONS, CAN ENDANGER YOUR...
  • Page 4 Introduction We would like to congratulate you on your purchase of a KTM motorcycle. Let us also take this opportunity to thank you for putting your trust in us; we will not let you down. You are now owner of a sporty and modern motorcycle which you are bound to have a great time with provided you care for it properly.
  • Page 5: Table Of Contents

    Re-initation after time of storage ..........38 Chain maintenance ...............18 TECHNICAL SPECIFICATIONS - CHASSIS........39 Chain wear ................19 General informations about KTM disc brakes ......19 TECHNICAL SPECIFICATIONS - ENGINE .......40 Checking of free travel at the hand brake lever ......19 WIRING DIAGRAMME ..........APPENDIX Checking of brake fluid level - front brake......20...
  • Page 6: Serial Number Locating

    SERIAL NUMBER LOCATIONS 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 of the engine below the chain sprocket.
  • Page 7: Choke Lever (Egs)

    Choke lever (EGS) If the choke lever is pulled backwards, a bore will be opened in the carburetor through which the engine may draw in additional fuel. This produces a „rich“ fuel/air mixture necessary for cold start. If the choke lever is pushed forward up to the stop, the bore will be closed again.
  • Page 8: Ignition Lock

    Ignition lock Switch positions of ignition lock = Ignition off, light off PARK = Ignition off, parking light on (only versions with battery) ON 1 = Ignition on, light on (if engine is running) ON 2 = Ignition on, light on (if engine is running) The ignition key can be withdrawn in positions OFF and PARK.
  • Page 9: Combination Switch (Egs)

    Combination switch (EGS) The rocker switch LIGHTS actuates the high beam or low beam. = High-beam light = Low-beam light The indicator switch returns to central position after actuation. Press indicator switch towards switch housing to switch off the indicator. The horn is sounded with button The light signal (high beam) is actuated with button NOTE: The engine must be running in order to check that the electric compo-...
  • Page 10: Fuel

    Fuel The LC4 engine needs premium gasoline with an octane number of 95 or higher. CAUTION ). N SE LEADED OR UNLEADED PREMIUM GRADE GASOLINE OCTANES EVER USE ANY GASOLINE HAVING LESS THAN OCTANES BECAUSE IT MAY DAMAGE THE ENGINE WARNING ASOLINE IS HIGHLY FLAMMABLE AND POISONOUS XTREME CAUTION SHOULD BE USED...
  • Page 11: Hot Start Device

    Hot-start device The carburetor is equipped with a hot-start device which makes it easier to start the engine when hot. Press the hot-start button until it engages. This will slightly lift the throttle valve. Once the engine is running, pull the hot-start button back into its original position.
  • Page 12: Compression Damping Of Fork

    Compression damping of fork The compression damping mechanism is built into the left fork tube. It only regu- lates the degree of damping during compression. By using the knob (COM), the degree of damping of the compression can be adjusted. Turn the knob clockwise to increase damping, turn it counterclockwise to reduce damping during compression.
  • Page 13: Driving Instructions

    Arrange for the as close as possible to the middle of the vehicle; distribute the braking system to be checked by a KTM specialist, as complete weight evenly between the front and rear wheel. Never exceed failure of the braking system can be avoided.
  • Page 14 Starting when the engine is cold 1 Open the fuel tap 2 Switch on the ignition and the emergency OFF switch 3 Swing up the side stand or center stand. 4 Put the gear in neutral 5 Operate the choke 6 Leave throttle closed and push the kickstarter hard ALL THE WAY.
  • Page 15: Stopping And Parking

    By shifting down, use the brakes if necessary and close throttle at the – A LWAYS TAKE OUT THE IGNITION KEY WHEN PARKING YOUR MOTORCYCLE same time. Pull clutch lever and shift down to the next gear. Let SO THAT IT CANNOT BE USED BY UNAUTHORIZED PERSONS clutch lever go slowely and open throttle or shift down again.
  • Page 16: Periodic Maintenance-Schedule

    PERIODIC MAINTENANCE SCHEDULE rider dealer 9.97 IF THE MOTORCYCLE IS USED PRIMARILI FOR OFF ROAD RIDING OR COMPETITIVE RACING, THE 5000 KM (3000 MILES) SERVICE NEEDS TO BE CARRIED OUT AFTER EACH RIDE OR RACE Check engine oil level Change engine oil (SX, SC) Change engine oil (EGS) Clean oil screen and magnet of the drain plugs whenever you exchange the engine oil Change oil filter unit...
  • Page 17: Maintenance Work On Chassis And Engine

    MAINTENANCE WORK ON CHASSIS AND ENGINE WARNING ALL MAINTENANCE AND ADJUSTEMENT OPERATIONS THAT ARE MARKED WITH A * REQUIRE SPECIALIST KNOWLEDGE. FOR YOUR OWN SECURITY, LET THESE TASKS BE CARRIED OUT BY A KTM-DEALER CAUTION – W HEN CLEANING THE MOTORCYCLE...
  • Page 18: Tool Set

    Tool set (SC) The tool set is located at the bottom of the seat. Tool set (EGS) The tool set is located in the tool box under the right side cover. Breather plug front fork After every 5 hours of use for competitive racing, slacken the breather plugs few turns in order to relieve excess pressure from the inside of the fork.
  • Page 19: Changing The Spring Preloading Of The Shock Absorber

    Measure the distance between the two discs at various points around their cir- cumferences. The space should be at least 2.5 mm (0,1 in) wide. Have the rubber min. 2,5 mm ring replaced by an KTM dealer when compaction due to wear has exceeded this lower limit. CAUTION...
  • Page 20: Check Chain Tension

    Checking chain tension – For checking, put the motorcycle on its main stand or jack it up on its frame so that the rear wheel is relieved of any load. – Push the chain upwards appr. 30 mm (1,2 in) from the end of the chain sliding component until the upper part of the chain is tensioned (see illustr.) –...
  • Page 21: Chain Wear

    In this case, consult an authorized KTM dealer immediately. BRAKE FLUID: KTM fills the brake systems with CASTROL DOT 5.1 brake fluid, one of the best brake fluids that is currently available. We recommend that you continue to use it.
  • Page 22: Checking Of Brake Fluid Level - Front Brake

    Checking of brake fluid level - front brake The brake fluid reservoir is linked with the hand brake cylinder at the handlebar and the reservoir is provided with an inspection glass. With the reservoir in a hori- zontal position, the brake fluid level should not drop below the middle of the glass. The reservoir should be kept completely full at all times for best performance.
  • Page 23: Changing The Basic Position Of The Brake Pedal

    Mount the right brake pad and fix it with the bolt. Mount the left brake pad and insert the bolt until it stops. Mount the clips. When mounting the brake pads, be sure to check for correct fit of the sliding metal-sheet in the caliper support and of the leaf spring WARNING...
  • Page 24: Checking The Rear Brake Pads

    Checking the rear brake pads min. The brake pads can be inspected from the rear. The thickness of the linings may 1 mm not be less than 1 mm (0.04 in). WARNING T THEIR MOST WORN POINT BRAKE PAD LININGS SHOULD NOT BE THINNER THAN ’...
  • Page 25: Dismounting And Mounting The Front Wheel (Egs)

    Dismounting and mounting the front wheel (EGS) To remove the front wheel, jack the motorcycle up by the frame so that the front wheel no longer touches the ground. Loosen the collar screw , and the 4 clam- ping screws on the axle clamps.
  • Page 26: Checking The Cush Drive Rubbers In The Rear Wheel Hub (Egs)

    – Tire pressure should be checked regularly on a “cold” tire. Proper pressure ensures optimum driving comfort and extends the life of your tires. WARNING – D KTM. O O NOT MOUNT TIRES WHICH HAVE NOT BEEN APPROVED BY THER TIRES TIRES - AIR PRESSURE COULD HAVE ADVERSE EFFECTS ON THE WAY YOUR MOTORCYCLE BEHAVES –...
  • Page 27: Checking Spoke Tension

    The fuse can be reached from below. Replace a blown fuse only with an equivalent one. If a new fuse that has just been set in gets blown again, you are strongly advised to have it inspected by a KTM dealer. CAUTION “...
  • Page 28: Replacing The Headlight Bulb (Egs)

    Replacing the headlight bulb (EGS) Remove the screws from the left and right side and pull the headlight straight out of the headlight mask. Remove the screws from the left and right side and take out the headlight unit. To change the headlight bulb, pull the plug from the bulb, turn the retaining clip counter clockwise, remove the bulb and dispose of the old bulb.
  • Page 29: Cooling System (Egs)

    SYSTEM FOR LEAKS LSO CHECK IF THERE IS ENOUGH COOLING LIQUID SCALDING HAZARD! D O NOT DRIVE ON UNTIL THERE IS SUFFICIENT LIQUID IN THE KTM’ COOLING SYSTEM OWEVER CALL ON ONE OF S DEALERS AS SOON AS POSSIBLE IN...
  • Page 30: Coolant Level Check

    To replace the rear glass fiber yarn pack, drill the rivets open and remove the rear Always renew the O-rings Glass fiber yarn packs are available in your KTM store. WARNING HE EXHAUST SYSTEM BECOMES VERY HOT WHILE THE MOTORCYCLE IS RUNNING...
  • Page 31: Carburetor - Adjust Idling (Dellorto)

    CARBURETOR – Adjust idling (DellOrto)* Idling adjustment of the carburetor strongly affects the engine’s starting behavior. That is, an engine whose idling speed is adjusted correctly will be easier to start than one whose idling speed has not been adjusted correctly. Idling is controlled by the throttle stop screw and the mixture control screw .
  • Page 32: Adjusting The Throttle Cable (Sx, Sc)

    Adjusting the throttle cable (SX, SC)* There must always be 3-5 mm play in the throttle cable. To check this, move back the protective cover on the twist grip. It must be possible to lift the outer 3-5 mm covering of the cable 3-5 mm (0,12-0,20 in) from the counterbearing of the twist grip, until resistance is felt.
  • Page 33: Adjusting The Choke Cable (Egs)

    Adjusting the choke cable (EGS)* At the choke cable, there must always exist a play of approx. 2 mm. To check this, push choke lever fully forward and pull protective cover from the adjuster piece . Now, it must be possible to lift the outer covering of the cable by approx.
  • Page 34: Checking The Engine Oil Level

    Checking engine oil level Allow the engine to run at idle for about 4 minutes. Turn off the engine and place the motorcycle on a flat, level surface (main stand). Take out the oil dipstick and wipe it off with a cloth. SCREW THE OIL DIPSTICK COMPLETELY INTO THE FILLER HOLE AND THEN The oil level should be within the flat area of the oil dipstick.
  • Page 35: Changing The Engine Oil (Sx, Sc)

    Changing the engine oil (SX, SC)* The engine oil change is to be carried out when the engine is still warm. WARNING N ENGINE HAVING BEEN RUN WARM AND THE ENGINE OIL IN IT ARE VERY HOT DO NOT BURN YOURSELF Place the motorbike on a horizontal surface.
  • Page 36: Changing The Engine Oil (Egs)

    Oil change and bleeding of the oil system (EGS)* NOTE: For improved cooling of the engine oil the front pipe of the frame is inter- grated into the oil circuit. When changing the oil, the engine oil has also to be drained from the front pipe.
  • Page 37: Changing Oil Filter

    Changing oil filter * Replace the oil filter when changing the engine oil. Press the foot brake lever and place a screwdriver or similar between foot brake lever and stopper roll so that the oil filter cover is more accessible. Remove banjo bolt and the three allen head screws.
  • Page 38: Trouble Shooting

    We would like to point out that many operations cannot be performed by oneself. In case of uncertainty, please contact a KTM-dealer.
  • Page 39 TROUBLE CAUSE REMEDY Engine will not reach full Fuel supply partically interrupted or Clean and check fuel system as well as carburettor power carburettor dirty float is not tight, or no axial play replace or abrade the float Air filter very dirty Clean or replace air filter Exhaust leaking or blocked Check if exhaust is damaged, replace glas fibre yarn in exhaust...
  • Page 40: Cleaning

    CLEANING 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 brand-name washing detergent and a sponge. The hard dirt can be removed before washing with the help of a soft water jet.
  • Page 44 K T M - S P O R T M O T O R C Y C L E A-5230 Mattighofen • Postfach 91 • Austria I n t e r n e t : h t t p : / / w w w . k t m . c o . a t FN 102019 d - Landesgericht Ried im Innkreis...