KTM RC 390 User Manual

16 COOLING SYSTEM 141
16.3 Checking the antifreeze and coolant level
Warning
Danger of scalding During motorcycle operation, the coolant gets very hot and is under pressure.
– Do not remove the radiator cap, radiator hoses or other cooling system components when the engine is hot. Allow the engine
and cooling system to cool down. In case of scalding, rinse immediately with lukewarm water.
Warning
Danger of poisoning Coolant is poisonous and a health hazard.
– Coolant must not come into contact with the skin, eyes, or clothing. If contact occurs with the eyes, rinse with water immedi-
ately and contact a physician. Immediately clean contaminated areas on the skin with soap and water. If fuel is swallowed, con-
tact a physician immediately. Change clothing that is contaminated with coolant. Keep coolant out of reach of children.
Condition
The engine is cold.
Preparatory work
– Remove the right side cover. ( p. 100)
S00783-10
Main work
– Stand the motorcycle upright on a horizontal surface.
–
Remove the cap of the compensating tank

.
– Check the coolant antifreeze.
−25… −45 °C (−13… −49 °F)
» If the coolant antifreeze does not meet specifications:
– Correct the coolant antifreeze.
– Check the coolant level in the compensating tank.
The coolant level must be between MIN and MAX.

KTM RC 390 Specifications

General

Displacement	373.2 cc
Max Torque	37 Nm @ 7000 rpm
Transmission	6-speed
Cooling System	Liquid Cooled
Front Suspension	WP APEX 43
Rear Suspension	WP APEX Monoshock
Rear Brake	230 mm disc, single-piston floating caliper
Fuel Tank Capacity	13.7 liters
Seat Height	824 mm
Bore x Stroke	89 mm x 60 mm
Compression Ratio	12.6:1
Frame	Steel Trellis Frame, Powder Coated
Engine Type	Single-cylinder, 4-stroke
Max Power	43.5 PS @ 9000 rpm
Fuel System	Electronic Fuel Injection
Front Brake	320 mm disc, 4-piston radial caliper
ABS	Dual Channel ABS
Dry Weight	172 kg
Front Tire	110/70 R17
Rear Tire	150/60 R17
Ground Clearance	158 mm