John Deere Lawn Mower DM1140 User Manual

Quality hay starts with  
Frontier Disc Mowers  
Medium-Duty and Heavy-Duty Disc Mowers  
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wing at economical prices  
DetailS - DiSc MowerS  
Inside each disc is a state-of-the-art disc pinion shaft. The shaft  
bearings are positioned in respect to the blade line of force for  
balanced operation and longer bearing service life. The oval shape  
of the disc ensures maximum knife overlap, and the ribbed profile  
allows material to flow cleanly and efficiently through the mower.  
Each disc mower folds to a compact vertical width for safe transport.  
The machine’s center of gravity is transferred close to the tractor for  
stability. A locking rod secures the cutter bar for additional safety.  
For added safety if a knife bends,  
deflector shields between the  
guards keep the knife from  
cutting the mower unit’s  
housing.  
The compensating spring keeps the cutter bar level with the ground  
when mowing rolling terrain and ditches. Spring tension is adjusted by  
changing the mainframe height with the tractor’s 3-point lift. A safety  
breakaway mechanism allows the unit to swing backwards to reduce  
impact should an obstacle be struck.  
hlphtn
knives ensures clean cutting,  
even in dense crops. For safe  
operation, knives are secured  
with heavy-duty, heat-treated  
steel bolts — not a quick-fitting  
system — and each bolt and  
lock-nut is protected  
Heat-treated steel guards protect  
the discs from striking low-lying  
objects while skid shoes help shield  
the cutter bar from abrasive surface-  
level material.  
The cutter bar on the DM1140 (right)  
can be equipped with a manual  
crank. The DM1140, DM1150,  
DM1160, and DM1270 come  
standard with hydraulic lift, which  
makes quick work of big fields by  
keeping you in the tractor seat.  
from wear.  
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Frontier Disc Mowers:  
Rugged. Reliable. Ready.  
SpecificationS  
Model  
DM1140  
DM1150  
DM1160  
DM1270  
3 point: Category  
1 or 2  
3 point: Category  
1 or 2  
3 point: Category  
1 or 2  
3 point: Category  
1 or 2  
Hitch  
540 rpm  
(overrun clutch optional)  
540 rpm  
(overrun clutch optional)  
540 rpm  
(overrun clutch optional)  
540 rpm  
(overrun clutch standard)  
PTO drive  
28 hp  
35 hp  
42 hp  
50 hp  
PTO horsepower  
Cutting width  
Average swath width  
Operating weight  
Discs  
5 ft. 3 in. (1.6 m)  
3 ft. 11 in. (1.2 m)  
805 lb. (366 kg)  
6 ft. 7 in. (2.0 m)  
4 ft. 7 in. (1.4 m)  
891 lb. (405 kg)  
7 ft. 10 in. (2.4 m)  
5 ft. 11 in. (1.8 m)  
995 lb. (452 kg)  
9 ft. 2 in. (2.8 m)  
7 ft. 3 in. (2.2 m)  
1,166 lb. (530 kg)  
4, oval shaped,  
ribbed profile  
5, oval shaped,  
ribbed profile  
6, oval shaped,  
ribbed profile  
7, heavy duty, oval shaped,  
ribbed profile  
8
10  
12  
14, heavy duty  
Standard  
Knives  
Optional  
Optional  
Hydraulic  
Optional  
Hydraulic  
Heavy-duty discs & knives  
Cutterbar lift mechanism  
Hydraulic  
(optional mechanical)  
Hydraulic  
1 single-acting valve  
1 single-acting valve  
1 single-acting valve  
1 single-acting valve  
Hydraulic outlet  
Belt drive  
Set of 3 V-belts  
with tensioner  
Set of 4 V-belts  
with tensioner  
Set of 4 V-belts  
with tensioner  
Set of 4 V-belts  
with tensioner  
Optional  
Standard  
Optional  
Standard  
Standard  
1 year  
Optional  
Standard  
Standard  
Standard  
Standard  
1 year  
Standard  
Standard  
Standard  
Standard  
Standard  
1 year  
Inner swath board  
Outer swath board  
Inner disc cone  
Outer disc cone  
Safety breakway  
Warranty  
Standard  
Standard  
Standard  
1 year  
Frontier Disc Mowers meet ASAE safety requirements.  
Stones and other objects can be thrown a great distance by the rotating cutting blades. Therefore, do not operate a disc mower near other people or close to buildings.  
To reduce the potential for thrown objects, always operate the disc mower with the cutter bar cover in the down position. In addition, these disc mowers should be used with  
tractors that have a factory-installed tractor cab.  
Kick your haymaking into high gear with Frontier  
haymaking tools, including  
tedders that efficiently  
preserve the nutrient value  
of your crop so you can bale  
your hay faster. Check out the  
entire line of rugged, reliable  
Frontier hay tools at your  
local John Deere Dealer.  
This literature has been compiled for worldwide circulation. While general information, pictures, and  
descriptions are provided, some illustrations and text may include finance, credit, insurance, product  
options, and accessories NOT AVAILABLE in all regions. PLEASE CONTACT YOUR LOCAL DEALER FOR DETAILS.  
Frontier Equipment reserves the right to change specifications, design, and price of products described in  
this literature without notice. Copyright 2009, Frontier Equipment.  
DSFB43620 Litho in U.S.A. (09-06)  
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