KTM 125 SX 2020 User Manual

14 COOLING SYSTEM
94
14.1 Cooling system
K01177-10
Water pump
1
in the engine ensures forced circulation of the
coolant.
The pressure resulting from the warming of the cooling system is
regulated by a valve in radiator cap
2
. This ensures that operat-
ing the vehicle at the specified coolant temperature will not result
in a risk of malfunctions.
120 °C (248 °F)
Cooling is effected by the air stream.
The lower the speed, the less the cooling effect. Dirty cooling fins
also reduce the cooling effect.
14.2 Radiator cover
Info
Do not use radiator covers in difficult operating conditions.
K00459-01
The radiator cover is mounted in front of the left radiator between
the radiator shield and radiator.
The radiator cover keeps the coolant temperature in the correct
range.
Coolant temperature 65 … 70 °C (149 … 158 °F)
M01121-10
The radiator cover is installed in front of the left radiator, depend-
ing on the ambient temperature.
Full radiator
cover
1
< 7 °C (< 45 °F)
Half radiator
cover
2
7 … 16 °C (45 … 61 °F)
No radiator cover > 16 °C (> 61 °F)
Info
Do not use both radiator covers at the same time.
14.3 Installing the radiator cover
K00460-10
–
Remove screws
1
.
–
Remove screws
2
.
–
Take off radiator shield
3
.

KTM 125 SX 2020 Specifications

General

Engine Type	1-cylinder, 2-stroke engine
Displacement	124.8 cm³
Bore x Stroke	54 mm x 54.5 mm
Starter	Kickstarter
Transmission	6-speed
Front Brake	Disc brake
Rear Brake	Disc brake
Ground Clearance	375 mm
Seat Height	950 mm
Clutch	Wet, multi-disc clutch, Brembo hydraulics
EMS	Kokusan
Frame	Central double-cradle type, 25CrMo4 steel
Front Suspension	WP XACT-USD, Ø 48 mm
Rear Suspension	WP XACT shock absorber with linkage
Fuel Tank Capacity	7.5 liters
Fuel System	Keihin carburetor