KTM 990 Super Duke/R Repair Manual

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EPC system 950 Super Enduro
Mode of operation:
Battery voltage from the battery is conducted through the switched on ignition switch
1 to the ECU (control unit) 2.
The EPC valves
3 are supplied with battery voltage via the ignition switch, the ground (red/green cable) is switched by the ECU.
The ECU receives a ground from the gear sensor
4 via the gray (2nd gear) or via the violet/brown (3rd gear) cable if one of the
two gears is engaged.
If the throttle grip is opened all the way (which the ECU recognizes via the TPS
5) at a certain speed (or a certain number of
revolutions) in 2nd or 3rd gear, the ECU activates the ground control of the EPC valves.
Subsequently, the EPC valves will open an air connection to the carburetor diaphragm covers. A controlled amount of fresh air
can be sucked into the space above the diaphragm, reducing the vacuum over the carburetor diaphragm. This causes the
carburetor slides to open more slowly resulting in a lower air-gap area to be sucked in through the engine. The engine
performance and noise are significantly reduced.
NOTE: if the EPC valves are disconnected, this will not influence the other systems.

KTM 990 Super Duke/R Specifications

General

Displacement	999cc
Transmission	6-speed
Lubrication	Forced oil lubrication with 2 oil pumps
ABS	Optional
Front Tire	120/70 ZR17
Starter	Electric
Engine Type	V-Twin, 4-stroke
Bore x Stroke	101 mm x 62.4 mm
Compression Ratio	11.5:1
Power	120 hp (89.5 kW) @ 9000 rpm
Torque	100 Nm @ 7000 rpm
Cooling	Liquid cooled
Front Suspension	WP 48mm upside-down fork, adjustable
Rear Suspension	WP monoshock
Front Brake	Dual 320 mm discs, 4-piston calipers
Rear Brake	Single 240 mm disc, 2-piston caliper
Rear Tire	180/55 ZR 17
Dry Weight	186 kg
Fuel Capacity	18.5 liters