Repair manual KTM 125 / 200
Art No 3.206.005 -E
9-6C
Engine 125 EXE
Design Liquid-cooled single-cylinder two-stroke engine with intake and exhaust control
Piston displacement 124.8 ccm
Bore / stroke 54,0 / 54,5 mm (2.125 / 2.145 in)
Fuel unleaded fuel with a least RON 91
Lubrication separate lubrication
Oil / gasolin ratio Shell Advance Ultra 2 or 2-stroke oil for a mix ratio1:50 and separate lubrication
Crankshaft bearing 2 grooved ball bearing
Connecting rod bearing needle bearing
Piston pin bearing needle bearing
Piston cast light alloy
Piston ring 2 rectangular ring
Spark plug NGK BR8 HS
Electrode gap 0.60 mm (0,024 in)
Primary drive straight cut spur gears, primary ratio 23:73
Clutch multiple disc clutch in oil bath, hydraulic operated (Shell HF-E15)
Transmission 6 speed, claw actuated
Gear ratio
1st gear 12 : 33
2nd gear 15 : 31
3rd gear 17 : 28
4th gear 19 : 26
5th gear 21 : 25
6th gear 22 : 24
Gear lubrication 0.7 l gear oil SAE-80W (Shell Advance Gear EP)
Available chain sprockets 14t for chain
5
/8 x
1
/4"
Coolant 0,8 litres, 40% anti freeze, 60% water, at least -25 °C (-13 °F)
Ignition system Kokusan digital 2K-3
Generator output 12V / 110 W
Carburetor flat-slide carburetor, carburetor setting see table
Air-filter wet foam type air filter insert
Oil tank tank content: 1,3 liter (0,34 US gallons)
TECHNICAL DATA - ENGINE 125 EXE / 125 SUPERMOTO 2000
125 EXE
(80 km/h)
125 EXE
(100km/h)
Carburetor
Carburetor setting number
Main jet
Idling jet
Starting jet
Jetneedle
Needle position from top
Throttle valve
Air adjustment screw top
Performance restrictor
Dell’Orto PHBH 28
051299
120
50
70
X83
III
40
1,25
–
Dell’Orto PHBH 28
021199
125
50
70
X83
III
40
1,25
–
125 Supermoto
(100 km/h)
125 Supermoto
(80 km/h)
Dell’Orto PHBH 28
051299
120
50
70
X83
III
40
1,25
–
Dell’Orto PHBH 28
021199
125
50
70
X83
III
40
1,25
–
BASIC CARBURETOR SETTING
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