Modern AG Super Highway Special - Manual (Page 24)

24 - Superrr Highway & 7' Predatorrr
oPeration Section
tractor Horsepower
the power required to operate a cutter is determined by the tractor PtO horsepower. Operating the
cutter with a tractor that does not have adequate power may damage the tractor engine.
3-Point Hitch
the tractor 3-point hitch must be rated to lift at
least 1000 lbs.
Refer to the tractor operator’s manual for the
category of the tractor being used. If the hitch
does not conform to aSae dimensions, the cutter
may not fit or raise properly.
Depending on the hitch category, certain size
pins are used to attach the cutter to the tractor.
Cat I hitches require 7/8” lower and 3/4” upper
diameter hitch pins.
front end weight
a minimum of 20% total tractor weight must be
maintained on the tractor front end at all times.
Front end weight is critical to maintain steering control and to prevent the tractor from rearing up
while driving. If the front end is too light, add weight until a minimum of 20% total weight is reached
on the front tires. Front weights and weight carriers can be purchased through an authorized tractor
dealership.
Power take off (Pto)
this cutter is designed to operate at a PtO speed of 540. most tractors operate at either 540, or a
combination of 540 and 1000 RPm PtO speeds. the operating speed of the cutter and tractor can be
determined by the number of splines on the driveline yoke and PtO output shaft. those operating
at 540 RPm will have a 6-spline shaft and those operating at 1000 RPm will have a 21-spline shaft.
If operating an older model tractor where the tractor’s transmission and PtO utilize one master
clutch, an over-running clutch must be used between the PtO output shaft and the driveline of
the cutter. an authorized tractor dealer can provide the over-running clutch and its installation if
needed.