Features, Detonation elimination technology (d.e.t.) – Polaris 600 Fusion User Manual

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FEATURES

Detonation Elimination Technology (D.E.T.)

The DET system prevents damage to the engine from detonation while

developing the maximum power of the engine safely. A detonation sen-

sor monitors the engine and responds to detonation by automatically

reducing the engine timing. This can result in decreased engine RPM

and performance.

The engine is designed to provide maximum power when premium (91

octane) fuel is used. If a lower octane fuel is used, or if the jetting is

incorrect for your altitude, the DET system will retard ignition to pre-

vent detonation.

When the DET system is adjusting the timing, the DET light on the

gauge will flash. In most cases the flashing will be temporary and the

timing will return to normal. If there is intermittent flashing, it’s likely

that the fuel or jetting is incorrect.

In extreme conditions the DET system retards timing and holds it in a

retarded state. The DET light will remain on until the engine is turned

off and restarted.