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KTM 125 SX 2023 User Manual

KTM 125 SX 2023
151 pages
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INDEX
146
INDEX
1
12-V battery
charging . . . . . . . . . . . . . . . . . . . . . . . . . 107
installing . . . . . . . . . . . . . . . . . . . . . . . . . 106
removing . . . . . . . . . . . . . . . . . . . . . . . . . 105
starting power . . . . . . . . . . . . . . . . . . . . . . 24
A
Air filter
cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 65
installing . . . . . . . . . . . . . . . . . . . . . . . . . . 66
removing . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Air filter box
cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Air filter box cover
installing . . . . . . . . . . . . . . . . . . . . . . . . . . 63
preparing for securing . . . . . . . . . . . . . . . . . 67
removing . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Air suspension XACT . . . . . . . . . . . . . . . . . . . . . 42
Antifreeze
checking . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Auxiliary substances . . . . . . . . . . . . . . . . . . . . . . 9
B
Basic chassis setting
checking with rider's weight . . . . . . . . . . . . . 36
Blink code . . . . . . . . . . . . . . . . . . . . . . . . 127-128
Brake discs
checking . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Brake fluid
front brake, adding . . . . . . . . . . . . . . . . . . . 83
rear brake, adding . . . . . . . . . . . . . . . . . . . 89
Brake fluid level
front brake, checking . . . . . . . . . . . . . . . . . 82
rear brake, checking . . . . . . . . . . . . . . . . . . 88
Brake lining retainers
of front brake, checking . . . . . . . . . . . . . . . . 84
of rear brake, checking . . . . . . . . . . . . . . . . 90
Brake linings
of front brake, changing . . . . . . . . . . . . . . . 85
of front brake, checking . . . . . . . . . . . . . . . . 84
of rear brake, checking . . . . . . . . . . . . . . . . 90
of the rear brake, changing . . . . . . . . . . . . . 90
C
Capacity
coolant . . . . . . . . . . . . . . . . . . . . . . . . . . 131
gear oil . . . . . . . . . . . . . . . . . . . . . . 119, 131
Chain
checking . . . . . . . . . . . . . . . . . . . . . . . . . . 74
cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Chain guide
checking . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Chain tension
adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . 73
checking . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Clutch
fluid level, checking/correcting . . . . . . . . . . . 78
fluid, changing . . . . . . . . . . . . . . . . . . . . . . 79
Clutch lever . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
basic position, adjusting . . . . . . . . . . . . . . . 78
Cold start button . . . . . . . . . . . . . . . . . . . . . . . . 19
Combination instrument . . . . . . . . . . . . . . . . . . . 17
Compression damping
fork, adjusting . . . . . . . . . . . . . . . . . . . . . . 44
Coolant
changing . . . . . . . . . . . . . . . . . . . . . . . . . 103
draining . . . . . . . . . . . . . . . . . . . . . . . . . 100
refilling . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Coolant level
checking . . . . . . . . . . . . . . . . . . . . . . . 99-100
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . 99
Customer service . . . . . . . . . . . . . . . . . . . . . . . . 9
D
Defined use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Diagnostics connector . . . . . . . . . . . . . . . . . . . 110
Difficult operating conditions . . . . . . . . . . . . . . . . 24
dry sand . . . . . . . . . . . . . . . . . . . . . . . . . . 25
high temperatures . . . . . . . . . . . . . . . . . . . 26
low temperature . . . . . . . . . . . . . . . . . . . . . 27
muddy surfaces . . . . . . . . . . . . . . . . . . . . . 26
slow speed . . . . . . . . . . . . . . . . . . . . . . . . 26
snow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
wet sand . . . . . . . . . . . . . . . . . . . . . . . . . . 25
wet surfaces . . . . . . . . . . . . . . . . . . . . . . . 26
E
Engine
running in . . . . . . . . . . . . . . . . . . . . . . . . . 23
Engine guard
installing . . . . . . . . . . . . . . . . . . . . . . . . . . 62
removing . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Engine number . . . . . . . . . . . . . . . . . . . . . . . . . 12
Engine sprocket
checking . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Exhaust control
end positions, programming . . . . . . . . . . . . 111

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KTM 125 SX 2023 Specifications

General IconGeneral
Displacement124.8 cm³
Bore x Stroke54 mm x 54.5 mm
StarterElectric starter
Transmission6-speed
Front SuspensionWP XACT-USD, Ø 48 mm
Rear SuspensionWP XACT Monoshock with linkage
Front BrakeDisc brake
Rear BrakeDisc brake
Ground Clearance375 mm
Seat Height950 mm
Weight (without fuel)87.5 kg
CoolingLiquid cooled
Front Tire80/100-21"
Rear Tire100/90-19"
Front Brake Diameter260 mm
Rear Brake Diameter220 mm
Engine TypeSingle-cylinder, 2-stroke
FrameCentral tube frame made of chrome molybdenum steel
Fuel Tank Capacity7.2 liters

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