1973 John Deere JDX8
ENGINE
Manufacturer: Canadian Curtiss-Wright (CCW)
Model: KEC 440/21
No. Of Cylinders: 2
Bore : 66MM
Stroke: 64MM
Displacement: 438CC
HORSEPOWER
 SAE J245 HP Rating: 38@6750
 SAE J607 HP Rating: 40@6750
FUEL SYSTEM
Carburetor Manufacturer: Walbro
Carburetor Model: WDA-34
Tank Capacity(Gals.): 5.50 (U.S)
Fuel Mixing Ratio: 50:1
CHASSIS AND BODY
MATERIAL
 Tunnel and Pan: Aluminum
 Hood and Console: Polyester
 Windshield: Polycarbonate
Overall Length(Inches): 103.4
Overall Width(Inches): 35.5
Overall Height(Inches): 40
Overall Weight(Pounds): 386
TRACK AND SUSPENSION
Suspension Type: Trailing Arm Bogie
No. of Bogie Wheels: 15
Track Material: Polyurethane
Track Width: 15.5
POWER TRAIN
TRANSMISSION
 Type: 2 Sheave Variable
 Manufacturer: Salsbury
 Model: 850
FINAL DRIVE RATIO
 Standard: 2.05:1
 Optional: 2.19:1, 2.44:1
Brake: External Band
Drive Belt: M63912
ELECTRICAL SYSTEM
Spark Plug Gap: 0.020 In.
Breaker Point Gap: 0.014+.002 In.
Timing(Static): 10* BTDC (Retarded) (.23 + .005 In.)
Lighting Coil Capacity: 120 Watt
LIGHT BULBS
 Headlight: 4000 (AM52309), 4002, or 4040
 Stop-Taillight: 1157 (AM52305)
 Speedometer: 1816 (AT22970)
 Tachometer:  1816 (AT22970)
Battery(Electric Start): AM52050