Omarv TFR 180 Use And Maintenance Manual page 31

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WARNING WARNING
WARNING WARNING
In the event that the front PTO of the tractor rotates in the direction indicated
in Figure13, it is necessary to invert the direction of rotor rotation, by
overturning the over gear unit, not forgetting to invert the breather cap with
the discharge cap. In this case the PTO shaft to be used must have the free
wheel on the right.
In the eve that the front PTO of the tractor rotates in the direction indicated in
Fugure14, no intervention is required on the drive unit. In this case the PTO
shaft must have the free wheel on the left.
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