Commercial Mowers 997 Diesel 72in deck

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  • 31-hp Yanmar Diesel engine
  • 3.2-gallon (U.S.) reservoir
  • Standard oil cooler
  • Ribbed cast aluminum spindle


Manufacturer John Deere
Model 997 w/72-in. side discharge deck Model Year 2011
Manufacturer  Yanmar  
Model no.  3TNV82A  
Horsepower (gross)  31 @ 3000 rpm 
Displacement  81 cu in. 
Cylinders  3  
Crankcase capacity  3.6 L 
 3.8 qt 
Oil filter  Full flow, replaceable, Spin-on type  
Lubrication  Full pressure  
Cooling  Liquid  
Air cleaner  Dry-type, replaceable  
Pre-cleaner  Yes  
Fuel system  
Fuel type  Diesel  
Fuel consumption  ---  
Fuel tank capacity  12 U.S. gal. 
Fuel tank switch/shut-off valve  Yes  
Electrical system  
Charge system  40 amp 
Battery voltage  12 V 
Cold cranking amp  490 @ -18 degrees C  
Hour meter  Standard  
Operator presence starting system  Standard  
Hydraulic pumps  Kanzaki DUP 17S  
Wheel motors  Parker Ross  
Travel speed  ---  
Forward  0-11.5 mph 
Reverse  0-5 mph 
Speed and direction control  Zero turn  
Hydraulic capacity  3.2 U.S. gal. 
Hydraulic oil cooler  Yes  
Filter  Spin-on Type  
Drive tires  26x12-12  
Rear tires  26x12-12  
Load rating  4pr  
Dynamic braking  Dual hand controlled levers  
Park brake  Caliper disc brake  
Park brake actuation  Hand lever  
Type  Hydraulic clutch  
Drive  Internal wet disk clutch  
Mower decks  
Available widths  60, 72 in. side discharge and 60 in. rear discharge  
Deck construction  7-Iron PRO: One piece stamped steel  
Deck thickness  7 gauge - .177 in. 
Discharge  72 in. 
Height-of-cut range  1.5-5.0 in. 
Increments  0.25 in. 
Cutting width  72 in. 
Length  25 in. 
Thickness  0.25 in. 
Tip speed  18,000 fpm 
Number  3  
Caster wheel type  Pneumatic  
Caster wheel size  15-6-6  
Front anti-scalp rollers  LH, RH, Center  
Rear anti-scalp rollers  LH, RH, Center  
Length  99 in. 
Width  86 in. 
Height  ROPS up: 74.8 in. 
Weight  1841 lb