KTM 990 - Manual (Page 83)

Activating the ignition curve for low-octane fuel
If you are traveling to a country where fuel having at least 95 octane (RON) is not available,
you can easily activate the corresponding ignition curve.
A plug and socket connection [1] on a brown/black cable is located near the upper shock
absorber holder .
If the two connectors are connected to each other, the ignition curve for fuel having at least
95 octane (RON) is activated.
If you disconnect the plug and socket connection, the ignition curve for fuel having 80 - 94
octane (RON) is activated. Although this causes the engine to lose some of its power out-
put, it prevents poor glow ignitions and engine damage.
If fuel having at least RON 95 (USA = Premium PON 91) is not available, the ignition curve
for 80 - 94 octane (RON) must be activated to prevent engine damage.
MAINTENANCE WORK ON CHASSIS AND ENGINE
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