Specifications

Å Are there multiple symptoms with a common
root?
Å Is there obvious physical damage that might be
related to the symptoms?
Å Know the system: eg. If the engine turns off when
the seat is occupied and the operator releases
the brake, does the tractor “know” that anyone is
in the seat?
Å Scientific method: develop hypothesis, then test
hypothesis
Question #2:
Where do the symptoms point?