KTM 125 SX Owner'S Manual Download Page 40

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ENGLISH

TECHNICAL SPECIFICATIONS – ENGINE 125/250 SX 2007

BASIC CARBURETOR SETTING

125 SX

250 SX

Carburetor

Keihin PWK 39

Keihin PWK 36 S AG

Carburetor setting mark

98SA0/98SA1

FK0160

Main jet

188 (185/190)

158 (155, 160)

Idling jet

45 (48)

45 (42)

Starting jet

Jet needle

R1469D (R1468D)

N1EI (N1EH)

Needle position from top

III

Throttle valve

5.5

6,5

Air adjustment srew open

1,5

TIGHTENING TORQUES - ENGINE

Flange bolts - cylinder-head (125 SX)

18 Nm

Flange bolts - cylinder-head (250 SX)

27 Nm

Nuts-cylinder base (125 SX)

30 Nm

Nuts-cylinder base (250 SX)

M10

35 Nm

Flywheel collar nut

M12x1

60 Nm

Nut for primary sprocket (125 SX)

M16x1,5 links

Loctite 243 + 130 Nm

Nut for primary sprocket (250 SX)

M18x1,5 links

Loctite 270 + 150 Nm

Nut for inner clutch hub (125 SX)

M18x1,5

130 Nm

Nut for inner clutch hub (250 SX)

M18x1,5

Loctite 270 + 100 Nm

Bundschraube Kupplungsfeder

10 Nm

Oil drain plug (125/250 SX)

M12x1,5

20 Nm

Oil drain plug (125 SX) Kupplungsdeckel

M10x1

15 Nm

Drain plug for water pump cover

M10x1

15 Nm

Collar screw for water pump cover

Loctite 243 + 10 Nm

Water pump wheel

Loctite 243 + 6 Nm

Crankcase and clutch cover bolts

10 Nm

Collar screws for ignition cover

5 Nm

Collar screws for exhaust flange

6 Nm

Spark plug

M14x1,25

25 Nm

Collar screws for ignition system

6 Nm

Collar screw for kickstarter lever

Loctite 243 + 25 Nm

Other screws

M 6

10 Nm

M 8

25 Nm

M 10

45 Nm

Summary of Contents for 125 SX

Page 1: ...KTM Sportmotorcycle AG A 5230 Mattighofen www ktm at KTM Group Partner 6 2006 FOTO MITTERBAUER 125 SX 250 SX OWNER S MANUAL 2007 ART NR 3 211 174 EN ENGLISH...

Page 2: ...TRIA All rights reserved Reprint also in extracts with written allowance of KTM SPORTMOTORCYCLE AG Mattighofen only We would like to congratulate you on your purchase of a KTM motorcycle You are now t...

Page 3: ...uction series It cannot be completely ruled out however that minor discrepancies may exist resulting from further design upgrades of these motorcycles This manual is an important part of your motorbik...

Page 4: ...the Owner s Manual or automotive fluids with equivalent specifica tions must be used in accordance with the maintenance schedule SPARE PARTS ACCESSORIES For your own safety use KTM approved parts and...

Page 5: ...sition 19 Check chain tension 20 Correct chain tension 20 Adapting the chain guide 20 Correct chain tension 21 Chain maintenance 21 Chain wear 21 General information about KTM disc brakes 22 Adjusting...

Page 6: ...r The clutch lever 1 is located on the left side of the handlebars The adjust ing screw A is used to change the original position of the clutch lever see maintenance work on chassis and engine The clu...

Page 7: ...ther hose 2 without kinks Fuel tap OFF In this position the fuel tap is closed No fuel can flow to the carburetor ON During operation the twist grip must be turned to ON This means that the fuel can f...

Page 8: ...idle speed is located between first and second gear OPERATION INSTRUMENTS 1 N 2 3 4 5 6 Kickstarter The kickstarter is mounted on the left side of the engine Its upper part can be swivelled Foot brake...

Page 9: ...ize the compression damp ing in the low and high speed range separately Dual Compression Control Low and high speed refers to the movement of the shock absorber during com pression and not to the spee...

Page 10: ...as close as possible to the middle of the vehicle distribute the weight evenly between the front and the rear wheel Never exceed the maximum permissible laden weight and the axle weights The maximum p...

Page 11: ...nt tread and incorrect air pressure deteriorate the driving performance 5 BRAKES Check correct functioning of the braking system Verify that there is suf ficient brake fluid in the reservoir The reser...

Page 12: ...the engine when cold Since the piston warms up and expands faster than the water cooled cylinder this might cause engine damage Always let engine idle until warm or drive it warm at low r p m speeds...

Page 13: ...discs brake pads brake caliper and brake fluid heat up The hotter these parts get the weaker the breaking effect In extreme cases the entire braking system can fail If the resistance in the hand brake...

Page 14: ...setting z z Check function of electric systems low beam high beam break light indicator z z z indicator lamps speedometer illumination horn emergency OFF switch or button BRAKES Check brake fluid lev...

Page 15: ...ntacts and switches with contact grease z Change break fluid z z z z z Change the hydraulic clutch oil z 125 250 SX 2007 IMPORTANT CHECKS AND MAINTENANCE TO BE CARRIED OUT BY THE RIDER before each sta...

Page 16: ...ned they can become loose and cause the motorcycle to go out of control while you drive Tightening the screws and nuts too tightly can damage the thread and components Let your motorcycle cool down be...

Page 17: ...ycle on ground unloaded dimension B 565 mm Static sag 35 mm If the static sag is lower the spring preload of the shock absorber must be increased if the static sag is reduced the spring preload must b...

Page 18: ...ng rate of the rebound stage can be reduced by a few clicks for a softer spring or increased by a few clicks for a harder spring Breather plug front fork After every 5 hours of use for competitive rac...

Page 19: ...a cable tie to keep the brake line from kinking see illustration Loosen the clamp screws and take the fork legs out of the triple clamps Loosen the collar screw 2 on the lower triple clamp 2 turns Rem...

Page 20: ...put the motorcy cle on a stand so that the front wheel is off the ground Now try to move the fork forward and backward To adjust the 5 clamping screws 1 and 3 loosen the upper triple clamp and turn t...

Page 21: ...one another The bores at the handlebar support 2 are offset from the center by 3 5 mm 0 13 in Accordingly you can mount the han dlebar in 4 different positions For this purpose remove screws 3 of the...

Page 22: ...ew chains wear faster if used on old used sprockets When you assemble a rear sprocket with 14t the collar must be on the inside Secure the screws of the chain wheel by applying Loctite and fasten them...

Page 23: ...efilling you may use DOT 4 brake fluid However you should replace it as soon as possible with DOT 5 1 Never use brake fluid DOT 5 The color of this silicon oil based product is purple red The gaskets...

Page 24: ...completely worn In this case consult an author ized KTM dealer immediately Refilling the front brake fluid reservoir Loosen screws 2 and remove lid 3 and membrane 4 Place hand brake cylinder in a hori...

Page 25: ...e piston in the brake cylin der to be recognised from the resistance on the foot brake pedal If this free play is not present then pressure can build up in the brake sys tem when driving causing the r...

Page 26: ...or damage Slide the left brake pad into the brake caliper and fix it with the pin Slide in the right brake pad and knock the bolt 3 in as far as it will go Mount the safety device 2 It is very importa...

Page 27: ...from jamming To install the front wheel lift it into the fork position and mount the axle shaft 1 Mount the collar nut 2 tighten the clamping screws 3 on the right fork leg axle passage to prevent the...

Page 28: ...and overheating of the tire can result Checking spoke tension The correct spoke tension is very important for the stability of the wheels and thus for riding safety A loose spoke causes the wheel to b...

Page 29: ...Use a mixture of 40 antifreeze and 60 distilled water for the cooling liq uid The antifreeze should be designed for temperatures of at least 25 C This mixture offers frost protection as well as good c...

Page 30: ...ex liquid Bio Power Also clean the air filter box Check the carburetor collar for damage and that it is filled correctly Place the air filter on the filter support and insert both in the center of the...

Page 31: ...y turn the adjusting screw manually and never apply excessive force MAINTENANCE WORK ON CHASSIS AND ENGINE Checking the oil level of the hydraulic clutch125 SX To check the oil level in the master cyl...

Page 32: ...ystem General information on carburetor wear Engine vibrations subject the throttle slide jet needle float needle valve and the needle jet to extreme wear Wear leads to malfunctio ning of the carburet...

Page 33: ...must be lowered by one notch If then the engine pings especially when accelerating under full power at maximum engine revs the jet needle should be raised If these faults should occur at the lower end...

Page 34: ...mark To mount tilt the motorcycle approx 45 to the left remove both screws 2 lift off the closing cover 3 and remove the springs including the spring insert 4 from the clutch cover Pull both springs o...

Page 35: ...if you use too little or low grade oil Use only high grade oil e g Motorex Top Speed 4T 15W50 Check transmission oil level 250 SX In order to check the transmission oil level the control screw 5 on th...

Page 36: ...for brake discs with a wax based anti corro sion agent Keep the anti corrosion agent from getting into contact with the brake discs otherwise this will significantly reduce the braking power After rid...

Page 37: ...r 14 psi Fuel tank capacity 7 5 Liter liters Final drive ratio 13 50 t 13 48 t Available final sprockets 38t 40t 42t 45t 48t 49t 50t 51t 52t Chain 5 8 x 1 4 Steering head angle 63 63 5 Wheel base 1471...

Page 38: ...Clamping screws fork stubs M8 15 Nm Collar nut rear wheel spindle M20x1 5 80 Nm Hexagon nut swing arm bolt M16x1 5 100 Nm Hexagon collar screw handlebar clamp M8 20 Nm Allan head screw handlebar suppo...

Page 39: ...7 mm 1 85 in Exhaust control start open 5500 min Exhaust control fully open 7000 7500 7900 min red yellow green spring Primary drive straight cut spur gears Primary ratio 23 73 26 72 Available chain s...

Page 40: ...Nm Nut for primary sprocket 125 SX M16x1 5 links Loctite 243 130 Nm Nut for primary sprocket 250 SX M18x1 5 links Loctite 270 150 Nm Nut for inner clutch hub 125 SX M18x1 5 130 Nm Nut for inner clutch...

Page 41: ...ck transmission oil level 125 34 Check transmission oil level 250 34 Compression damping of fork 8 Compression damping of shock absorber 8 Correct chain tension 20 Conservation for winter operation 35...

Page 42: ...X S 6 0 0 2 4 0 0 1 l i o c n o i t i n g i n o t t u b p o t s G 3 p u k c i p r o t a r e n e g C D I 0 0 3 2 3 0 9 3 8 4 5 r o t c e l e s e v r u c n o i t i n g i red white red black e t i h w e...

Page 43: ...un br marrone or orange or orange or arancione pi pink pi rosa pi rosa gr grey gr grau gr grigio pu purple pu violett pu violetto ENGLISH FRANCAIS ESPANOL CABLE COLOURS COULEUR DE CABLE COLOR DE CABLE...

Page 44: ...R1468D 3 192 1 5 48 R1469D 2 190 1 5 45 R1469D 2 188 1 75 45 R1470D 2 185 2 42 R1470D 2 182 2 25 40 R1470D 2 180 750 m 2500 ft 301 m 1001 ft LSO ASO LD IJ NADEL NEEDLE POS POS HD MJ 1 50 R1468D 3 195...

Page 45: ...HD MJ 1 48 N1EH 4 162 1 45 N1EH 3 160 1 45 N1EI 3 158 1 42 N1EI 3 158 1 40 N1EI 2 155 2 40 N1EI 2 152 750 m 2500 ft 301 m 1001 ft LSO ASO LD IJ NADEL NEEDLE POS POS HD MJ 1 48 N1EG 4 165 1 48 N1EH 4 1...

Page 46: ...KTM Sportmotorcycle AG A 5230 Mattighofen www ktm at KTM Group Partner 6 2006 FOTO MITTERBAUER 125 SX 250 SX MANUAL DE INSTRUCCIONES 2007 ART NR 3 211 174 ES ESPA OL...

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