Specifications, Service and Repair of Farm and Lawn Tractors

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John Deere X749 Specs

John Deere X749 Engine Specifications

Engine Model - Yanmar 3TNV76
Number of Cylinders - 3
Engine Type - Inline, Water-Cooled, 4 Stroke Diesel
Engine Gross Power - 17.9 kW (24hp)
Bore x Stroke mm x mm - 76x82
Total Displacement cc - 1.116
Combustion type - Indirect Injection
Aspiration - Natural Aspiration
Valves per Cylinder - 2
Compression ratio - 23.5
Firing Order - 1-3-2
Low Idle Speed rpm - 1500
High Idle Speed rpm 3770
Direction of rotation - Counter Clockwise (view from flywheel)
Length - Inches (mm) - 22.3 (567)
Width - Inches (mm) - 16.8 (427)
Height - Inches (mm) - 23.7 (601)
Dry Weight lbs (kg) - 271 (123)
Flywheel - SAE 5
Flywheel Housing - SAE 5 (124 mm Depth)
Gear Case - without SAE Hydraulic Pump Flange
Inclination, Continuous degrees - 25
Inclination, 3 minutes Max. degrees - 30
Lubrication Oil Filter Type - Paper Element
Oil Capacity, Effective Liters - 1.6
Total System Capacity Liters - 3.5
Oil Change Interval, Hours hr - 250 (50, initial)
Recommended Oil Type - CD, CE, CF or higher grade
Cooling System Fan Type - Pusher
Fan Diameter Inches (mm) - 13.2 (335)
Number of Blades - 6
Fan Pulley Diameter Inches (mm) - 3.9 (100)
Crank Pulley Diameter Inches (mm) - 4.3 (110)
Fuel Filter Type - Paper Element
Fuel Injection Pump Type - Inline Type
Water Separator (Standard) - Mesh size: 100-mesh/inch, water reservoir 150 cc
Electrical System Voltage Volts - 12 V
Electric Stop Device - Stop Solenoid (Pull Coil Timer: 1 sec.)
Alternator - 12V-40A
Starting Aid Device - Glow Plug, 12V
Standard pre-heat time Seconds - 3
Starting Motor Type - Conventional
Starting Motor Power kW - 1.1 ± 0.3

JD X749 Power Take-off

Rear PTO - Independent
Rear RPM - 540
Mid PTO - Independent
Mid RPM - 2000
Front PTO - Optional
Front RPM - 2000
PTO engagement - Electro-hydraulic

John Deere X749 Transmission

Transmission Type - 2-Pedal Foot Control Hydrostatic
Transaxle - Tuff Torq K92
Number of Speeds - Infinite
Cruise control - Standard
Reduction Ratio - 28.125:1
Axle Torque (Rated) - 882 (650) Nm (lb-ft)
Max. Tire Diameter - 660 (26) mm (in)
Brake Capacity - 1,470 (1,085) Nm (lb-ft) @ 69 Nm (51 ft-lb) Brake Arm Torque
Displacement (Pump/Motor) - 18/18 cc/rev
Max. Input Speed - 3,200 rpm
Axle Shaft Size - 30 (1.18) with Flanged Axle mm (in)
Weight (dry) - 56 (123) kg (lb)
Brake Type - Wet Disc
Housing (Case) - Die-Cast Aluminum
Gears - Heat-treated Steel Gears
Differential - Automotive-type Bevel Gears
Differential Locks - Standard, Interlocked with Brake
Auxiliary/External Hydraulic Outlets - 14.4L per minute 50 bars (725 psi) @ 3,200 rpm
Hydraulic fluid type - ISO32 Hydraulic Oil (Anti-Brake Squeal Type) - 7.5L (2WD), 7.8L (4WD)
Oil Filter - Automotive screw on type
Transaxle Oil - Low Viscosity HY-GARD (J20D)
Forward Speeds - 0 to 13.7 km/h (0 to 8.5 mph)
Reverse Speeds - 0 to 8.1 km/h (0 to 5.0 mph)

Mechanical

Chassis - 4 Wheel Drive (HFWD)
Front axle - Cast iron
Front wheel (each) - Automatically adjusted speed
Front Drive Axle Oil - GL-5 Gear Lubricant (80W-90)
Rear Transaxle - Heavy duty
Steering - Hydrostatic power
Brakes - Internal wet disc
Disc Brakes - Oil immersed

JD X749 Hydraulics and Hitch

Hydraulic Pressure - 924 psi (63.7 bar)
Selective Control Valves - 2 dual SCV
Total Hydraulic Flow - 4.5 gpm (17.0 lpm)
Steering/hydraulic flow, l/min - 23.4
Rear hitch - 400 kg at liftpoints
Front hitch - Optional

Tire Sizes

Front Tire / Pressure - 18x8.50-10, Turf, 4PR / 82-110 kPa (12-16 psi)
Front Tire / Pressure - 18x8.50-10, HDAP, 4PR / 82-110 kPa (12-16 psi)
Rear Tire / Pressure - 26x12.00-12, Bar, 4PR / 40-138 kPa (6-20 psi)
Rear Tire / Pressure - 26x12.00-12, HDAP, 2PR / 40-70 kPa (6-10 psi)

Capacities

Fuel Tank - 24.6L (6.5 gal)
Four-Wheel Steer Transaxle (with filter) - 5.6L (6.0 qt)
HFWD System Transaxle (with filter) - 6.8L (7.2 qt)
Cooling System - 2.8L (3.0 qt)
Engine Oil (with filter) - 2.6L (2.75 qt)
4WD (MFWD) Front Drive Axle - 2.4L (2.5 qt)
Full Time 4WD (HFWD) Front Drive Axle - 5.0L (5.3 qt)

John Deere X749 Attachments

48X Mower Deck

Type - Mid-Mount, 3-blade
Cutting width - 48 inches (1,21 m)
Weight - 117 lbs (53 kg)
Cut height - 1 to 5.25 inch (2 to 13 cm)
Cut positions - 18
Lift - Hydraulic

54X Mower Deck

Type - Mid-Mount, 3-blade
Cutting width - 54 inches (1,37 m)
Weight - 170 lbs (77 kg)
Overall width - 64.5 inches (1,63 m)
Cut height - 1 to 5.25 inch (2 to 13 cm)
Cut positions - 18
Lift - Hydraulic

62X Mower Deck

Type - Mid-Mount, 3-blade
Cutting width - 62 inches (1,57 m)
Weight - 200 lbs (90 kg)
Cut height - 1 to 5.25 inch (2 to 13 cm)
Cut positions - 18
Lift - Hydraulic

John Deere X749 Dimensions

Overall Height - 1,27 m (50,0 in.)
Overall Width - 1,23 m (48,3 in.)
Overall Length - 2,00 m (78,8 in.)
Wheel Base - 1,42 m (56,0 in.)
Weight 4WD (HFWD) / 4WS - 554kg (1221 lb)

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