Distributor rotation (advance vs. retard)
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
Updated:
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The rotor under the distributor cap rotates clockwise.
To retard the timing: Rotate the distributor body clockwise.
To advance the timing: Rotate the distributor body counterclockwise.