New Holland 499 Operator's Manual page 7

19. Never work under a raised header unless it is
securely locked with the header transport
stops.
20. Always block the wheels before working on
or under the machine.
21. Limit towing speeds to 32 km/hr (20 mph)
maximum.
22. Never stand behind the mower-conditioner
while it is running.
23. Operate the machine only at the PTO speed
for which it is designed. attach a 540 rpm
implement only to a 540 rpm PTO and a 1000
rpm implement to a 1000 rpm PTO.
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