L.B. White Pilot Light Ignition Installation And Service Manual page 67

Do not use pliers when removing or tightening the
attachment nut or connector nut. Doing so will
round off the nuts creating service problems.
Insure dirt or debris has not fallen into the power
unit prior to thermocouple installation. Dirt and
debris will block the electrical pathway of the
thermocouple, creating pilot outages.
August 1999
Instructions
Insure the thermocouple is fully and firmly
positioned in the pilot bracket by either its
attaching nut or clip.
Do not make sharp kinks or bends in the
thermocouple's copper tube.
damage the thermocouple.
Servicing
Thermocouple
Doing so may
8.6-2 2