KTM 390 DUKE 2017 User Manual

15 ELECTRICAL SYSTEM
173
Info
Even when there is no load on the battery, it discharges steadily.
The charging level and the method of charging are very important for the service life of the battery.
Rapid recharging with a high charging current shortens the battery's service life.
If the charging current, charging voltage, or charging time is exceeded, electrolyte escapes through the
safety valves. This reduces the battery capacity.
If the battery is depleted from starting the vehicle repeatedly, the battery must be charged immediately.
If the battery is left in a discharged state for an extended period, it will become over-discharged and sul-
fate, destroying the battery.
The battery is maintenance-free. The acid level does not have to be checked.
Preparatory work
– Switch off all power consumers and switch off the engine.
–
Remove the passenger seat. ( p. 121)
– Remove the front rider's seat. ( p. 122)
– Disconnect the negative cable of the battery to avoid damage
to the onboard electronics.

KTM 390 DUKE 2017 Specifications

General

Displacement	373.2 cc
Bore x Stroke	89 mm x 60 mm
Compression Ratio	12.6:1
Torque	37 Nm @ 7, 000 rpm
Transmission	6-speed
Fuel System	Electronic Fuel Injection
Cooling	Liquid cooled
Frame	Steel trellis frame, powder coated
Rear Suspension	WP monoshock
Front Tire	110/70 R17
Rear Tire	150/60 R17
Seat Height	830 mm
Ground Clearance	185 mm
Dry Weight	149 kg
Engine Type	Single cylinder, 4-stroke
Power	32 kW (44 hp) @ 9, 000 rpm
Clutch	Wet multi-disc clutch
Front Suspension	WP upside-down Ø 43 mm
Front Brake	320 mm Disc, Four-Piston Radial Fixed Caliper
Rear Brake	230 mm Disc, Single-Piston Floating Caliper
ABS	Bosch 9MB two-channel ABS
Fuel Tank Capacity	13.4 liters