TROUBLESHOOTING TIMING LIGHT
The DC power timing light is a precision instrument which, if used prop-
erly, will give many years of service. Observing the following precautions
will prevent damage and extend service life.
1. Before starting engine, double check to make certain that all, leads are
2. Switch light ON only when observing timing marks. Life of lamp will be
prolonged by intermittent use.
A timing light that fails to perform satisfactorily should be checked as
outlined in Table 1, Troubleshooting Procedures.
XENON LAMP REPLACEMENT
An inoperative xenon lamp may be removed and replaced in the field.
Removal and replacement are easily accomplished. The lamp is installed in the
lower front portion of the timing light and held in place with a removable
knob. To remove the lamp, proceed as follows:
Grasp the protruding portion of the knob with the fingers, press in, and
rotate to the right or left until the knob's locking tab engages the tab
opening. Slip knob and lamp assembly down from the housing.
Remove the lamp from the knob and insert a replacement lamp.
Carefully insert the lamp and knob assembly into the timing light housing
and press in until locking tab clears surface of housing. Rotate one
quarter turn right or left to engage locking tab. Internal spring pres-
sure will hold assembly in position.