As stated above, before using any attachments or implements, always read, understand and follow the manufacturer’s safety manual.
Only use equipment that’s in good repair. Ensure that all guards or shields happen to be set up and operational.
Guards around the energy take-off shafts, gear box and other rotating/spinning apparatus are very important.
Lower hydraulics.
Shut off the tractor engine.
Apply tractor parking brake.
Hitch tractor to implement.
Ensure that universal joints are in the correct phase 
when connecting the shaft.
Do not wear loose clothing. Tie back long hair. Do not dress in shoe laces dangling.
Stand from moving or rotating products. Where possible, function from the tractor chair, and have bystanders become at least 6 metres (20 toes) away.
Do not take out shields from the PTO shaft.
Be sure that the PTO spinner/integral shields rotate freely.
Use the correct size drive for the machine being powered.
Match the right PTO rate for the machine being used.
Do not stage over a rotating shaft. Actually PTO shafts with guards will be dangerous. Walk around the gear.
Know how to prevent the tractor, engine and attachment quickly in the event of emergency.
Follow shutdown procedures and wait for all moving parts to avoid before moving away from the tractor or approaching the attachment.
Disconnect PTO you should definitely in use.
“Power Take Off” (PTO) is a term used to describe the process of transmitting power from one point to another.A PTO shaft, for instance, is a cylindrical metallic rod that attaches to a electric power source, such as a tractor, at one end and an attachment, like a brush hog mower, at the various other. When the tractor’s engine is running, electric power flows along the shaft. The shaft rotates at engine quickness, transferring energy from the engine to the attachment.
When attaching or detaching PTO-driven equipment:
PTO was developed mainly through the Power Take Off Shaft china ingenuity of farmers. In the past, power take-off employed belt drives, drive shaft attachments and pneumatics like bleed air flow, but a geared tranny is more common today.
Power Take-Off accidents are very common on a farm. According to the National Agricultural Safety Data source, most PTO accidents occur when garments and/or limbs happen to be entangled in the rotating PTO shaft.