1973 Sportster - Sportsterpedia

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====== 1973 Sportster ======
====== Vehicle Identification ======
===== Frame VIN Numbers =====

Starting in 1970, the only numbers used for the purpose of identification are on the right neck and frame downtube.
  * The frame is stamped with a Vehicle Identification Number (VIN)identification.
  * There are still other stampings on the different parts of the frame combined with certain features that can be used to date the frame. \\ But the only numbers used to identify the entire bike for ownership purposes is the VIN number stamped in the right side neck.
  * In addition to the neck VIN, an identification label is located on the frame giving the VIN and date of manufacture. \\ This label was required by law for identification.((HD Service School service bulletin #596 dated September 16, 1969))
  * The serial number is the 3rd through the 7th digit. All serial numbers run consecutively regardless of model year. ((HD Service School service bulletin #596 dated September 16, 1969))
[[techtalk:ih:body01w|Click Here]] to view Ironhead Frame Identification in the Sportsterpedia for more information. \\
[[sportster_history:99xx-01a|Click Here]] for more information on serial numbers and VINs in the Sportsterpedia. \\

^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&797|}}||||
|  **VIN for 1973 Sportsters**  ||||
|**Sportster \\ Model Code** \\ (first 2 digits)|**Serial Number** \\ (next 5 digits)|**Manufacturer** \\ (second to last digit)|**Model Year** \\ (last digit)|
|3A = XLH \\ 4A = XLCH \\ |10,000 and up|H = Harley Davidson|3 = 1973|
|  ||||
|:::|:::|:::|:::|
|**Example**: (4A13675H3) indicates a 1973 XLCH and is stamped on the right side engine case and on the frame \\ with the addition of a label on the steering head showing the VIN and date of manufacture. ((Shop Dope Service Bulletin #596 dated September 16, 1969))||||
|Example VIN Reads: 4A13675H3||||
|  4A  |  13675  |  H  |  3  |

===== Engine Serial Numbers =====
The engine serial numbers were still stamped in the case but longer used for identification purpose of ownership on 1970-up model Sportsters. \\
  * The engine VIN is stamped on the right side of the engine crankcase between the cylinders.

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====== Specifications ======
==== Model Designations ====
  * XLH, XLCH

==== Dimensions ====
  * Wheelbase: ((Harley-Davidson 1970 Service Manual))
    * XLH, 58-1/2 in / 148.59 cm
    * XLCH, 58-1/2 in / 148.59 cm
  * Overall Length:
    * XLH, 87-1/4 in / 221.61 cm
    * XLCH, 87-1/4 in / 221.61 cm
  * Overall Width:
    * XLH, 33 in / 83.82 cm
    * XLCH, 32 in / 81.28 cm
  * Overall Height:
    * XLH, 40-1/2 in / 103 cm
    * XLCH, 42 in / 106.7 cm
  * Road Clearance:
    * XLH, 7-1/4 in / 18.41 cm ((HD 1970-1978 Sportster Service Manual))
    * XLCH, 7-1/4 in / 18.41 cm

==== Engine ====  
  * Engine type: 4 cycle Overhead Valves, 45 degree V2 ((Harley-Davidson 1957 - 1969 Service Manual))
  * Displacement: 60.9 ci / 997.5 cc (1,000 cc advertised)
  * Compression Ratio: 9:1
  * Bore: 3.188 in / 81 mm
  * Stroke: 3.8125 in / 96.8 mm
  * Horsepower: 61 @ 6,200 RPM ((Harley-Davidson 1970-1978 Service Manual))
  * Taxable Horsepower: 7.2
  * Torque: 52 ft-lb @ 3800 RPM
  * 4 Cams 
  * Oil Pump: Gear driven type oil pump. [[techtalk:ih:oil03|Click Here ]] for the IH Oil Pump section of the Sportsterpedia.
  * Oil pump pressure (gauge mounted in place of oil pressure switch):
    * Minimum: 3-7 psi (idle)
    * Maximum: 15 psi (60 mph in high gear)
    * Normal riding conditions: 4-15 psi 
  * Fuel System: Bendix/ Zenith I6P12 carburetor. [[techtalk:ih:carb01#bendix_zenith_i6p12_carb_1972-early_1976|Click Here]] to reference the main Ironhead carb page in the Sportsterpedia
  * Spark Plugs
    * #4 for break.
    * #5 for everyday use and hard service.

==== Capacities =====
  * Fuel Capacity: ((Harley-Davidson 1970-1978 Service Manual))
    * XLH fuel tank 4 gal / 15.14 l
    * XLCH fuel tank 2.2 gal / 8.328 l
    *Reserve: .25 gal / .946 l
  * Oil Capacity: 3 qts. / 2.83 l
  * Transmission Capacity: 1.5 pints / .71 l

==== Clutch ====
  * Multi-Disc wet clutch-pack with alternate steel and fiber friction plates.((1957-1969 HD FSM pg 4A-3))

==== Drivetrain ====
  * Constant Mesh ((1970-1978 HD FSM pg 1-1))
  * Right Side Shifter
  * Speeds - 4 Forward
  * Number of Sprocket Teeth (XLH / XLCH)
    * Engine: 34
    * Clutch: 59
    * Transmission: 20 / 21
      * There is an overlap in 1973 in that the FSM(s) state a 21T and a 20T for 1973 ((The Doctor71 of the XLFORUM))
    * Rear Wheel: 51
  * Gear Ratios (XLH / XLCH with 20 teeth trans sprocket)
    * 1st: 11.16:1
    * 2nd: 8.08:1
    * 3rd: 6.11:1
    * 4th: 4.42:1
  * Gear Ratios (XLH / XLCH with 21 teeth trans sprocket)
    * 1st: 10.63:1
    * 2nd: 7.70:1
    * 3rd: 5.82:1
    * 4th: 4.22:1

==== Tires ====
Starting in 1970, Harley Davidson partnered with Goodyear for a new "special" tires and rims for standard "high ground clearance" Sportster models. \\
Standard or Low Clearance models did not have the "special" rims and use standard tires. \\
[[http://www.sportsterpedia.com/doku.php/techtalk:ih:wheels01|Click Here]] for the Ironhead tires and wheels page in the Sportsterpedia for more information. \\

Tire pressure based on 150 lb rider. When weight is exceeded by 50 lbs or more, increase the rear by 2 lbs and front by 1 lb. \\
Repeat for each additional 50 lbs of weight. ((Harley-Davidson 1970 - 1977 Service Manual)) \\
Tires: (both the Special Goodyear and the Yokohama tire brands are all obsolete now) \\
  * Standard Sportster Models;
    * Front 3.25/3.50 x 19
    * Rear 4.00 x 18
  * High Ground Clearance Sportster Models: ((Harley-Davidson 1970 Service Manual pg 1-1))
    * Front;
      * Goodyear (3.75x19) Sport Rib (tire pressure 18 psi / 1.24 bar) ((Harley-Davidson 1970 Service Manual pg 1-1))
    * Rear;
      * Goodyear 4.25x18 All Traction (tire pressure 30 psi / 2.06 bar) ((Harley-Davidson 1970 Service Manual pg 1-1))
  * Low Ground Clearance Models:
    * Front 3.25/3.50 x 19
    * Rear 3.50 x 18

===== Models =====

==== XLH 1000 ====

  * 
  * 
  * 
  * 
What is the Current KBB Value?  ((http://www.kbb.com/motorcycles/harley-davidson/xlh-sportster-1000/1973-harley-davidson-xlh-sportster-1000/trade-in/))



==== XLCH 1000 ====

  * 
  * 
  * 
  * 
What is the Current KBB Value?  ((http://www.kbb.com/motorcycles/harley-davidson/xlch-sportster-1000/1973-harley-davidson-xlch-sportster-1000/trade-in/))







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