New Holland LS140 Workshop Manual page 495

START RELAY GROUND CIRCUIT
The start relay is grounded through the (B-6) wire to
the ground terminal on the preheat relay and then
through the (B-8) wire to the engine bell housing.
START INTERLOCK RELAY OPERATION
The start interlock relay, 1, controls the starting circuit
when the "SERVICE/RUN" switch is in the "RUN"
position, allowing the engine to start.
SECTION 55 - ELECTRICAL SYSTEM
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55-70
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