Actron Advance Timing Light CP7528 - Manual (Page 17)

ADVANCE TIMING LIGHT
1. At distributor, leave vacuum line disconnected and plugged.
2. Press and hold down button. View timing marks. Turn advance
knob until moving mark is aligned with stationary “0” degree mark.
Note degrees advance at idle speed.
3. Slowly increase engine speed to 2500 RPM,
or other speed specified by manufacturer.
Timing mark should move smoothly in
opposite direction of engine rotation.
4. Turn advance knob until moving mark is
aligned with stationary “0” degree mark.
5. Subtract degrees advance at idle from
degrees at higher speed. Difference is
amount of centrifugal advance.
6. Slowly decrease engine speed to idle RPM. Timing mark should move
smoothly in direction of engine rotation.
NOTES
ADVANCE READING (RPM NOTED
IN SERVICE MANUAL OR VECI)
TIMING AT IDLE
CENTRIFUGAL ADVANCE
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