New Holland 499 Operator's Manual page 40

REEL SPEED
For most crops, the reel speed should be
approximately 10% faster than ground speed.
Example: The reel speed chart shows the machine
as shipped from the factory with the outer sheave
flush with the hub. This provides a tine tip speed of
10.6 km/hr (6.6 MPH). The tractor ground speed
would be approximately 9.7 km/hr (6 MPH). These
are only guidelines. Different crop conditions may
require other adjustments.
WARNING
Disengage the PTO, turn off the tractor engine
and remove the key. Wait for all movement to
stop before leaving the operator's position.
Never adjust, lubricate, clean or unplug machine
with the engine running. Failure to comply could
result in death or serious injury.
SECTION 2 - OPERATION
The reel speed chart shows the various reel speeds
resulting from rotating the outer sheave half on the
inner hub. Another range of reel speeds results if the
outer sheave half is turned so the belt rides on the
"low side," small diameter flange. Speeds are listed
for the standard 19-tooth or optional 16-tooth reel
speed reduction sprocket. These sprockets are on
the outer side of the left sickle drive gearbox. The
optional reel speed reduction sprocket is available
from the parts department at your local New Holland
dealer.
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