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OPERATION
FN20/FN14 NITRO 02/10 Operation Section 4-5
© 2010 Alamo Group Inc.
OPERATION
3. TRACTOR REQUIREMENTS
The tractor used to operate the mower must have the power capacity to lift, pull, and operate the Power Take
Off (PTO) at the mower’s rated speed while traveling at a ground speed between 2 and 5 MPH. Operating the
mower with a tractor that does not meet the following requirements may cause tractor or mower damage and
be a potential danger to the operator and passersby.
Tractor Requirements and Capabilities
• ASABE approved Roll-Over Protective Structure (ROPS) or ROPS cab and seat belt.
• Tractor Safety Devices .................... Slow Moving Vehicle (SMV) emblem, lighting,
PTO master shield
• Tractor Horsepower -Minimum ........ NITRO FL20 80HP; NITRO FL14 80HP
• Drawbar............................................ 14” length for 540 RPM unit; 16” or 20” length for 1000 RPM unit,
mower equipped with Pintle Hook (Optional Equipment) drawbar length must be modified (see 3.4 Draw-
bar), rated to carry weight of mower, safety chain attachment point (See Chart Below)
• Tongue Weight ................................. 3100 lbs.
• Hydraulics ........................................ Minimum of 1 hydraulic port (extra 3-spool valve required). Minimum
2 ports, 3 ports recommended if additional,3-spool control valve is not used.
• Front End Weights............................ As needed to maintain 20% weight on front axle
Power Take Off 540 RPM 6-spline or 1000 RPM 21-spline, 1-3/8” diameter output shaft depending on mower
operating speed.
For other PTO & Drawbar Category Combinations see your Tractor specifications.
Drawbar
Category
Min.
Tractor HP
II 80
III 90
3.1 ROPS and Seat Belt
The tractor must be equipped with a Roll-Over-Protective-Structure (ROPS) (tractor cab or roll-bar) and seat
belt to protect the operator from falling off the tractor, especially during a roll over where the driver could be
crushed and killed. Only operate the tractor with the ROPS in the raised position and seat belt fastened.
Tractor model not equipped with a ROPS and seat belt should have these life saving features installed by an
authorized dealer. OPS-U- 0003
Operate this Equipment only with a Tractor equipped with an approved roll-
over-protective system (ROPS). Always wear seat belts. Serious injury or
even death could result from falling off the tractor--particularly during a turnover
when the operator could be pinned under the ROPS.
(SG-7)