GxT V083-01, Ferret 83 Self-Powered Advance Timing Light - Manual (Page 5)

Timing-Advance Test Procedure - Analog T/L
This light measures advance by delaying the fl ash so that it appears to
align the crank shaft TDC mark to its pointer. The indicator knob will
display the degrees of advance.
1. Place the Inductive Pick up around the #1 spark plug wire.
2. Prepare the engine for timing tests, such as: warming-up, disabling
electric and vacuum control lines, and cleaning the wheel timing
marks. Then run the engine. When you press the buttons on the
handle the light should begin fl ashing.
3. Point the light beam onto the degree marks at the engine damper
wheel or fl ywheel, and move the mark to the TDC position using
the Advance knob, and read the timing advance on the back panel.
NOTE: Align your eye squarely with the timing marks when to avoid
parallax error.
4. To measure RPM, turn the advance knob until the RPM light is
on. The advance knob now indicates RPM. 15 degrees would be
1,500 RPM.
5. Compare the measurement with the specifi cation. Adjustments are
made by turning the distributor slightly or by moving the ignition
timing sen sor.
6. Restore all engine parts to their normal arrangement.
Charging the Batteries
Simply plug the AC charger into a 110 volt AC source, then plug the
AC charger into the Timing Light. The AC charger replaces the spark
pickup. A red LED, located near the nose of the timing light will fl ash
one time per second while the batteries are being charged. If the LED
fl ashed rapidly there is a charging fault and you may need to contact
technical support for assistance. If the LED turns off, the light is fully
charged. You may leave the charger plugged into the timing light for
an extended period of time.
Battery Pack Warranty
The battery pack is warranted for 90 days from the date of purchase.
Should the battery fail to charge, or hold a charge and the unit has
been in service for less than 90 days, simply return the light to GxT for
repair or replacement.
Automatic Power Shutdown
To save power the timing light will shut down 7 minutes after the last
button press.