KTM RC 390 User Manual

17 TUNING THE ENGINE 148
17.1 Checking the play in the throttle cable
400192-11
– Check the throttle grip for smooth operation.
– Move the handlebar to the straight-ahead position. Move the throttle grip back and forth
to ascertain play

in the throttle cable.
Throttle cable play 3… 5 mm (0.12… 0.2 in)
» If the throttle cable play does not meet specifications:
– Adjust the play in the throttle cable. ( p. 149)
Danger
Danger of poisoning Exhaust gases are toxic and inhaling them may result in
unconsciousness and/or death.
– When running the engine, always make sure there is sufficient ventilation,
and do not start or run the engine in an enclosed space without an effective
exhaust extraction system.
– Start the engine and let it run idle. Move the handlebar to and fro over the entire steer-
ing range.
The idle speed must not change.
» If the idle speed changes:
– Check the throttle cable routing.

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