UNITS ARE NOT A SAFETY CLUTCH!
prevent the tractor PTO and transmISsion being driven by implements
on the over-run ie. inability to stop single clutch tractors such
as the Ferguson Te20, TO20, MF35 single, Ford 8N, 9N, 2N when a Rotary Cutter IS attached.
protection under load hence normally used in conjunction with a separate
COMBINED FREEWHEEL / SAFETY CLUTCHES