2. After the engine is warm, operate it at idling speed or the RPM
specified in the vehicle manual.
3. Aim the timing light at the timing marks, press the switch to
operate the timing light and observe the timing mark. The position
of the timing mark must agree with the manufacturer's
specification. If it does not, reset the timing as follows:
4. Stop the engine. Loosen distributor hold-down device (consult
service manual for specific method). Distributor should be just
loose enough to permit rotating the distributor body by hand.
5. Restart the engine. Slowly turn the distributor in the correct
direction in order to line up the timing marks.
6. When the specified timing marks are in line, stop the engine and
securely tighten the distributor hold-down device.