New Holland T6010 Operator's Manual page 157

NOTE: The P.T.O. shaft speed (1) may be displayed
in the central LCD if required.
NOTE: If overspeeding of the P.T.O. occurs (i.e.
P.T.O. speed exceeds 630 rev/min) the light (2) will
flash for 5 seconds, then remain steady. When the
1000 rev/min shaft is in use, the light may also flash
(but may be ignored) as P.T.O. shaft speed passes
through the 630 rev/min range. The light will flash
again at 1170 P.T.O. rev/min to indicate that
overspeeding has occurred in the 1000 rev/min
P.T.O. range.
IMPORTANT: An automatic P.T.O. brake is installed
to stop shaft rotation quickly when the P.T.O. is
disengaged. To avoid overstressing the P.T.O.
brake, slow down the implement by reducing engine
speed before disengaging the P.T.O. This is
particularly important with implements having a high
inertia. Such implements should, ideally, be fitted
with an overrun clutch. To avoid damage to the brake
when operating high inertia implements, hold down
the switch (1), to disengage the brake and allow the
implement to come to rest naturally.
DANGER
To avoid inadvertent movement of the implement,
disengage the P.T.O. after each use.
SECTION 3 - - FIELD OPERATION
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3--23