Toro 74177 Operator's Manual page 45

does not become part of solid waste or waters.
Management and disposal practices must be within
relevant federal, state or local laws.
Return the switch to your Toro dealer if it is faulty and is
being replaced or if the unit containing the switch is no
longer operating and is being scrapped. If the switch is
damaged or broken open use extreme caution in handling.
Call your local waste management authority or Toro
Customer Service for instructions.
Caution
The mercury contained in the tilt switch is
poisonous and exposure to mercury can cause
severe illness.
Never attempt to open or repair the tilt
switch.
Avoid contact with the mercury.
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