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OPERATION
Operation Section 4-2
OPERATION
© 2004 Alamo Group Inc.
SR14/SR20 10/03
IMPORTANT: To avoid mower damage, retorque all bolts after the first 10 hours of operation. Retighten blade
carrier retaining nut on gearbox lower shafts to 400 ft. lbs..
Rhino SR14/SR20 rotary mowers are manufactured with quality material by skilled workers. These mowers are
designed to cut grass, weeds, crop stalks, small brush and other vegetative material up to 2-1/2” diameter. The
mower is equipped with protective deflectors and/or chain guards to prevent objects being thrown from the mower
by the blades, however, no shielding is 100% effective. All shields, guards, deflectors, and chains equipped on the
unit must be maintained on the mower in good operational condition.
It is the operator’s responsibility to be knowledgeable of all potential operating hazards and to take every reasonable
precaution to ensure oneself, others, animals, and property are not injured or damaged by the mower, tractor, or a
thrown object. Do not operate the mower if passersby, pets, livestock, or property are within 300 feet of the unit.
This section of the Operator’s Manual is designed to familiarize, instruct, and educate safe and proper mower use
to the operator. Pictures contained in this section are intended to be used as a visual aid to assist in explaining
the operation of a flex-wing rotary mower and are not necessarily of a SR14/SR20 cutter. Some pictures may
show shields removed for picture clarity. NEVER OPERATE this implement without all shields in place and in
good operational condition. The operator must be familiar with the mower and tractor operation and all associated
safety practices before operating the mower and tractor. Proper operation of the mower, as detailed in this
manual, will help ensure years of safe and satisfactory use of the mower.
RHINO SR14/SR20 ROTARY MOWER
OPERATION INSTRUCTIONS
MOWER STANDARD EQUIPMENT AND SPECIFICATIONS.................................................................4-4
(1) OPERATOR REQUIREMENTS....................................................................................................4-5
(2) TRACTOR REQUIREMENTS.......................................................................................................4-6
(2.1) ROPS and Seatbelt............................................................................................................4-6
(2.2) Tractor Safety Devices........................................................................................................4-6
(2.3) Tractor Horsepower............................................................................................................4-7
(2.4) Drawbar............................................................................................................................4-7
(2.5) Tractor Hydraulics.............................................................................................................4-7
(2.6) Front End Weight...............................................................................................................4-8
(2.7) Power Take Off (PTO).........................................................................................................4-8
(3) GETTING ON AND OFF THE TRACTOR........................................................................................4-9
(3.1) Boarding the Tractor...........................................................................................................4-9
(3.2) Dismounting the Tractor......................................................................................................4-9
(4) STARTING THE TRACTOR.........................................................................................................4-10
(5) CONNECTING THE MOWER TO THE TRACTOR.........................................................................4-11
(5.1) Connecting the Mower Tongue to the Tractor........................................................................4-11
(5.2) Connecting Mower Hydraulic Lines to the Tractor..................................................................4-12
(6) SETTING THE MOWER.............................................................................................................4-13
(6.1) Setting Deck Height..........................................................................................................4-13
(6.2) Setting Deck Pitch............................................................................................................4-14