1973 Arctic Cat EXT 340 Specifications

  • Engine:

    • Model: T7A340RX-1 Kawasaki
    Cylinders: 2
    Displacement: 339cc
    Bore: 60mm
    Stroke: 60mm
    Horsepower: 60 +
    Compression Ratio: 7.5:1 Effective
    Peak HP R.P.M.: 9500
    Piston Clearance: 0.0045 inch max
    Ring End Gap: 0.006 - 0.012 inch
    Timing: Timing Mark on Case
    Ignition Type: CD
    Lighting Coil Voltage/Wattage: 12 Volt/100 Watt
    Spark Plug: NGK B10EV
    Plug Gap: 0.012 - 0.016 inch
    Fuel Mix Ratio: 20:1
    Cylinder Head Torque: 16 ft. lb.
    Crankcase Torque: 16 ft. lb.
    Flywheel Torque: 60 ft. lb.
    Max Engine Operating Temp: 425 degrees
    Carburetor: Mikuni VM-36 (2)
     
  • Drive Pulley:

    • Model: Kawasaki & Arctic
    Kawasaki Spring Tension: 45 lbs. per inch
    Arctic Spring Tension (green): 64 lbs. per inch
    Engagement Speed: 6500 R.P.M With Gear Reduction
    Drive Belt Width: 1 1/4 Inch
    Outside Drive Belt Circumference: 46 7/8 Inches (+/- 3/16 Inch)
     
  • Driven Pulley:

    • Model: Comet
    Spring Color: Red
     
  • Drive/Driven Pulley:

    • Center to Center Distance: 11 3/8 inches
    Offset: .320 inch
     
  • Gearing:

    • With Arctic Drive Pulley: 20T/35T
    With Kawasaki Drive Pulley: 39T/20T
    Chain: 70 pitch
     
  • Chassis:

    • Chassis Material: Aluminum
    Belly Pan Material: Fiberglass
    Hood Material: Fiberglass
    Length W/Skis: 94 inches
    Height: 33 inches
    Overall Width: 33 1/2 inches
    Track Width: 15 inches
    Track Length on Ground: 30 inches
    Fuel Capacity: 4 1/2 Gallons
    Chaincase Capacity: 8 oz
    Weight: 285 Pounds
     
  • Carburetor Specifications:

    • Main Jet: 380
    Air Jet: 2.0
    Jet Needle: 6DH4-3
    Needle Jet: Q-5
    Slide: 2.0
    Pilot Jet: 35
    Bypass Hole: 1.4
    Pilot Outlet: 0.6
    Air Screw: 1.0
    Inlet Seat: 1.5
    Starter Jet: 1.5
    Fuel Level: 33.0
    Bypass Pitch: 3.8
    Pump: DF52

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