Turn it to the opposite direction that the rotor rotates.
To advance ignition timing, loosen the distributor clamp and in very small increments turn the distributor body in the OPPOSITE direction of the rotor's normal rotation. If you don't know which way the rotor turns, you can find out easily by removing the distributor cap and having a helper turn the engine over with the ignition key switch. To advance the timing turn the distributor counter clockwise.
Rtr. turning clockwise. Rotate distributor counter clockwise to advance timing, clockwise to retard.
turn the distributor.
Turn it to the left which will be counterclockwise.
counter clockwise
counter clockwise
Counter clockwise to advance.......clockwise to retard
To advance, rotate the distributor counter-clockwise. To retard, roatate it clockwise).
counter clockwise.
Loosen the bolt holding the distributor in place, and turn the distributor counter clockwise. If it bucks the starter, it is too far advanced.
I'm not sure if you can on that model. If it has a distributor, you can loosen the hold down bolt and turn it to advance or retard your timing. If it doesn't have a distributor, it set by the ecm.