English – KTM 250 EXC RACING User Manual

Page 5

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ENGLISH

4

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SERIAL NUMBER LOCATIONS . . . . . . . . . . . . . . . . . . . . . .5

Chassis number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Engine number, engine type . . . . . . . . . . . . . . . . . . . . . .5

OPERATION INSTRUMENTS . . . . . . . . . . . . . . . . . . . . . . .5

Clutch lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Hand decompression lever . . . . . . . . . . . . . . . . . . . . . . .5
Hand brake lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Digital speedometer, indicator lamps . . . . . . . . . . . . . . . .6
Electronic speedometer . . . . . . . . . . . . . . . . . . . . . . . . . .6
Tripmaster switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Short circuit button (SX/MXC) . . . . . . . . . . . . . . . . . . .11
Combination switch (EXC) . . . . . . . . . . . . . . . . . . . . . . .11
Headlamp switch (EXC USA) . . . . . . . . . . . . . . . . . . . . .11
Flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Emergency OFF button (EXC) . . . . . . . . . . . . . . . . . . . .11
Emergency OFF switch (EXC Australia) . . . . . . . . . . . . .12
Filler cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Fuel tap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Choke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Hot start device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Shift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Kickstarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Foot brake pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Side stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Compression damping of fork . . . . . . . . . . . . . . . . . . . .14
Rebound damping of fork . . . . . . . . . . . . . . . . . . . . . . .14
Damping action during compression of shock absorber (SX) . .14
Compression damping of shock absorber (MXC, EXC) . .15
Rebound damping of shock absorber (SX, MXC, EXC) . .15
Steering lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

GENERAL TIPS AND WARNINGS FOR STARTING THE
MOTORCYCLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

DRIVING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . .17

PERIODIC LUBRICATION AND MAINTENANCE-SCHEDULE . . .20

MAINTENANCE WORK ON CHASSIS AND ENGINE . . . . .24

Checking and adjusting the steering head bearing . . . . .24
Breather plug front fork . . . . . . . . . . . . . . . . . . . . . . . . .25
Cleaning the dust sleeves of the telescopic fork . . . . . . .25
Adjusting the spring preload on the fork (SX) . . . . . . . .25
Basic suspension setup for the weight of the driver . . . .26
How to change the handlebar position . . . . . . . . . . . . .28
Changing the spring preload of the shock absorber . . . .28
Pivot bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Check chain tension . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Correct chain tension . . . . . . . . . . . . . . . . . . . . . . . . . .29
Chain maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Chain wear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
General information about KTM disc brakes . . . . . . . . .31
Adjusting the free travel at the hand brake lever . . . . . .32

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Checking the brake fluid level - front brake . . . . . . . . . .32
Refilling the front brake fluid reservoir . . . . . . . . . . . . . .32

Checking the front brake pads . . . . . . . . . . . . . . . . . . .32
Replacing the front brake pads . . . . . . . . . . . . . . . . . . .33
Changing the basic position of the brake pedal . . . . . .33
Checking the rear brake fluid level . . . . . . . . . . . . . . . .33
Refilling the rear brake fluid reservoir . . . . . . . . . . . . . .33
Checking the rear brake pads . . . . . . . . . . . . . . . . . . . .34
Replacing the rear brake pads . . . . . . . . . . . . . . . . . . .34
Dismounting and mounting the front wheel . . . . . . . . .34
Dismounting and mounting the rear wheel . . . . . . . . .35
Tires, air pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Checking the spoke tension . . . . . . . . . . . . . . . . . . . . .36
Replacing the battery of the digital speedometer . . . . .36
Setting the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Kilometers or miles . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Checking/setting distance of the magnetic sensor . . . .38
Battery (MXC/EXC) . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Charging the battery . . . . . . . . . . . . . . . . . . . . . . . . . .39
Fuse (MXC/EXC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Replacing the headlight/parking light lamp . . . . . . . . .40
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Checking the coolant level . . . . . . . . . . . . . . . . . . . . . .41
Bleeding the cooling system . . . . . . . . . . . . . . . . . . . . .41
Replacing the glassfiber yarn packing of the silencer . .42
Cleaning the spark arrestor (MXC/EXC USA) . . . . . . . .42
Cleaning the air filter . . . . . . . . . . . . . . . . . . . . . . . . . .43
Checking adjustment of the hand decompression release cable . .43
Adjusting the throttle cables . . . . . . . . . . . . . . . . . . . . .43
Changing the original position of the clutch lever . . . .44
Checking the oil level of the hydraulic clutch . . . . . . . .44
Bleeding of the hydraulic clutch . . . . . . . . . . . . . . . . . .44
Carburetor adjustment . . . . . . . . . . . . . . . . . . . . . . . . .45
Adjusting the mixture control screw . . . . . . . . . . . . . . .45
Checking the float level . . . . . . . . . . . . . . . . . . . . . . . .45
Draining the float chamber of the carburetor . . . . . . . .46
Oil circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Checking the engine oil level . . . . . . . . . . . . . . . . . . . .46
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Changing the engine oil . . . . . . . . . . . . . . . . . . . . . . . .47

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

CONSERVATION FOR WINTER OPERATION . . . . . . . . .51

STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Using after storage . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

TECHNICAL SPECIFICATIONS - ENGINE . . . . . . . . . . . . .52

TECHNICAL SPECIFICATIONS - CHASSIS . . . . . . . . . . . . .55

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . .Appendix

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