Filter
Top Products
OPERATION
Saber Operation Section 3-31
©2011 Alamo Group Inc.
OPERATION
A flail mower deck should be carried so that the part of the deck weight is carried by the boom and part carried
by the ground roller, when moving on the ground. When the flail mower is carried this way, the ground roller
follows the contour of the ground more easily during mowing operations.
The rotary mower deck should always be carried rather than dragged on the skid shoes when mowing on the
ground. Dragging the rotary mower deck increases the side loads on the boom, decreases the horsepower
available to the cutter head, and reduces the ability of the accumulator the carry part of the weight of the boom
during mowing operations.
When rotating parts are in motion, serious injury may occur if caution is not used or danger
is not recognized. Never allow bystanders within 300 feet of the machine when in operation.
Extreme care should be taken when operating near loose objects-such as gravel, rocks, and
debris. These conditions should be avoided.
8.4 50” and 60” Boom Rotary Brush Mowers
The 50” and 60” boom rotary brush mower was designed for cutting brush and foliage up to 6 inches in
diameter or multiple branches that have a total cross section area equivalent to one 6 inch branch.
During mower operation, the hand throttle must be used to maintain engine speed at 1900-2200 R.P.M. This
prevents radical changes in mower spindles speed, reducing the possibility of cutter assembly damage.
The horizontal positioning action of the boom is designed to position the cutting head and provide a limited
pressure relief when excessive pressure is applied to the boom. Do not force the cutting head into heavy
branches or stumps. Damage to the unit may result.
When using the rotary cutting head for trimming trees and shrubs, let the mower saw into
them. Do not lower the mower head down directly into a tree or stump. The mower blades
are designed to cut with the end, and misuse can cause damage to the blade and a
hazardous situation for the operator.
Powering the boom down, forcing mower deck onto ground may damage mower deck and
it’s attachment to the boom, creating a potentially hazardous situation.
To ensure a clean cut, engine speed should be maintained at approximately 1900-2200
R.P.M. If the tractor slows to less than 1800 R.P.M., shift to the next lower gear. DO NOT
ride the clutch, this will cause premature clutch failure. The engine should not be operated at any time at
more than 2400 R.P.M. on the tractor tachometer.
For cutting brush it is usually best to stop the tractor and swivel the boom and mower into foilage. The
horizontal positioning action of the boom is designed to position the cutting head and provide a limited
pressure relief when excessive pressure is applied to the boom.
DO NOT use excessive force when positioning cutting head into heavy branches or
stumps. Damage to the unit may result. It is best to let the cutter head “eat away” slowly at
heavy cutting jobs.
If foliage falls on top of mower deck causing tractor to become unstable, move the boom
“Forward” and “Out” to relieve tipping of the tractor. Lower mower deck to ground and shut
down unit. After all motion stops, remove foliage from mower deck.
The mower will operate more efficiently in tougher conditions and with less power if the
knives are kept sharp. If the mower begins to vibrate, stop the tractor, check for wire wrapped in the spindle or
damaged knives. When replacing knives, replace all knives with new knives to ensure proper balance so the
mower will not vibrate. Severe vibration will result, if knives with unequal wear are used.
Begin a pass at the top side of the trees and work down with each consecutive pass. When cutting trees and
shrubs, use a lower speed to allow the knives time to cut as well as mulch the foliage.
If bystanders approach within 300 feet while mower is in operation turn mower switch
“OFF” immediately! After shutdown, never leave the tractor or allow bystanders to
approach within 300 FEET of the unit until all motion stops completely.
If cutter shaft jams and stops, turn mower switch to “OFF”, and swivel boom “AFT”.
Normally this action will clear the cutter head. If not, roll mower deck until adjacent to the secondary boom,
then lower boom to rest mower deck on ground. Shut off the tractor, set parking break, allow all motion to
cease. At that point it is safe to leave the tractor and clear the cutter heads manually.
Begin each pass at the top side of the trees and work down with each consecutive pass. Use a low speed to
allow the cutting blades time to mulch as well as cut the foliage. When the initial pass has been made,