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SECTION I
INTRODUCTION AND DESCRIPTION
1-1 INTRODUCTION
We are pleased to have you as a Bush Hog cus-
tomer. Your Side Mount Rotary Cutter, Model
SM60,has been carefully designed to assure maxi-
mum service with minimum down time. This manual
is provided to give you the necessary operating and
maintenance instructions for keeping your rotary cut-
ter in top operating condition. Please read this man-
ual thoroughly. Understand what each control is for
and how to use it. Observe all safety precautions
decaled on the machine and noted throughout the
manual to insure safe operation of the equipment. If
any assistance or additional information is needed,
contact your local authorized Bush Hog dealer.
1-2 DESCRIPTION
The Side Mount Rotary Cutter (Fig. 1-1) is an agri-
cultural implement designed primarily for cutting
brush up to 1 inch (2.5cm) in diameter along ditches
and banks. It is to be used on tractors weighing
a minimum of 6000 lbs. (2722 kg) not including
ballast and having a minimum of 50 PTO horse-
power. Two models are available; the model
SM60R, requiring 540 rpm PTO speed and the
model SM160R, requiring a 1000 rpm PTO speed.
Front and rear discharge shields are standard on
each.
The cutter is all hydraulically powered as shown in
Fig. 1-2. A hydraulic gear pump is driven by the
tractor PTO. The 35 gallons of oil are delivered to
the motor at a maximum of 3200 PSI on a cast
iron pump and motor. The hydraulic oil is filtered
by a suction strainer mounted inside the tank and a
canister type return line filter. Each filter is equipped
with a bypass to prevent pumpt cavitation, should it
become clogged. Slide cylinder and deck pivot
cylinders are controlled by the tractor auxiliary
hydraulic system.
6
Return Line Filter
Hydraulic Tank
Counterweight
Box
Hydraulic Pump
Parking Stand
Figure 1-1 Major Components
Head Pivot Cylinder
Safety Chains
Hydraulic Motor
Spindle Housing
Cutter Deck