Spearhead MULTICUT
820
8
Introduction
The Spearhead 820 is a heavy-duty rotary mower for a set-aside, stubble and
pasture topping. By carefully following the instructions in this handbook, the 820 will
give many years of trouble free operation.
Safety First
Never start using the machine until the handbook has been read and understood.
The 820 rotary mower is a potentially lethal machine if used incorrectly and it is
essential that the operator fully understands the working before starting up
.
Tractor Requirements
Spearhead recommend tractors of plus 150 hp.
A clevis drawbar must be used. Do not use the pick-up hitch.
The tractor should have a minimum weight of 6000 kg.
The tractor should have a 1,000rpm p.t.o. 1 ¾ “ – 20 spline.
Two external hydraulic services are required, single acting for height control
and double acting for wings with float facility.
Attaching To The Tractor
It is essential to ensure that the tractor lift arms cannot foul the p.t.o. shaft, even
when the tractor is on full lock. It is advisable to remove them altogether if there is
any doubt.
The tractor drawbar should be extended to its maximum not less then 400mm from
the p.t.o. This will enable turning in work without damaging the drive shaft. Never
attach the mower using the
pick-up hitch as this will cause damage to
the drive shaft.
Fit the nylon washer between the mower
drawbar and the tractor clevis, as shown, to
reduce wear between the two parts. The
nylon washer is a replaceable wearing part.
Warning
Do not attach machine to pick
up hook. This will damage the
P.T.O. shaft