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sportster_history:1973_sportster [2021/09/11 02:39] hippysmack [Drivetrain] |
sportster_history:1973_sportster [2021/11/15 04:17] hippysmack [Illustrations] |
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====== 1973 Sportster ====== | ====== 1973 Sportster ====== | ||
+ | **Model Production Numbers** | ||
+ | * XLH 1000 9,875 | ||
+ | * XLCH 1000 10,825 | ||
+ | |||
+ | **Colors** \\ | ||
+ | * Birch White or Hi-Fi Sparkling Blue. | ||
+ | |||
====== Vehicle Identification ====== | ====== Vehicle Identification ====== | ||
===== Frame VIN Numbers ===== | ===== Frame VIN Numbers ===== | ||
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^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&797|}}|||| | ^{{techtalk:miscres:instruction_sheet_header_4.png?nolink&797|}}|||| | ||
- | ^ **VIN for 1973 Sportsters** |||| | + | | **VIN for 1973 Sportsters** |||| |
|**Sportster \\ Model Code** \\ (first 2 digits)|**Serial Number** \\ (next 5 digits)|**Manufacturer** \\ (second to last digit)|**Model Year** \\ (last digit)| | |**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| | |3A = XLH \\ 4A = XLCH \\ |10,000 and up|H = Harley Davidson|3 = 1973| | ||
Line 25: | Line 32: | ||
* The engine VIN is stamped on the right side of the engine crankcase between the cylinders. | * The engine VIN is stamped on the right side of the engine crankcase between the cylinders. | ||
- | ---- | + | ====== Related Manuals and Documentation ====== |
+ | |||
+ | Below are some suggestions for manuals for your ride. \\ | ||
+ | __You should have, at minimum, a Factory Service Manual (FSM) and a Factory Parts Catalog for your year model__. \\ | ||
+ | |||
+ | **Factory Service Manuals (FSM)**; \\ | ||
+ | The FSM will have the most accurate information, procedures and specs. \\ | ||
+ | Clymer and Haynes make service manuals also for Sportsters but some of the information is in error to the factory FSMs. \\ | ||
+ | And some of the information in the aftermarket manuals is vague in information or procedures but they may have more pictures. \\ | ||
+ | So it is generally said you can get use from both an aftermarket manual and the factory service manuals but get the factory manual first. \\ | ||
+ | |||
+ | **Parts Catalogs**; \\ | ||
+ | The Parts Catalog has part numbers of course but it also has exploded parts views. \\ | ||
+ | However, IT IS NOT INTENDED TO BE AN ASSEMBLY MANUAL. \\ | ||
+ | And some of the exploded views are confusing or not related to each other on the same pages. \\ | ||
+ | But, all in all, the exploded views do help finding what goes where. \\ | ||
+ | Most of the fasteners listed in the relevant parts catalog individual pages have thread sizes and lengths also in case you need those. \\ | ||
+ | **Note: ALL 1957-1978 PARTS CATALOGS LIST PARTS FOR PREVIOUS YEARS**. \\ Below is a simple list of original and "latest edition parts catalogs. | ||
+ | The in-between year books may show different part numbers for the same year model bike. \\ | ||
+ | [[techtalk:miscres:miscres12|Click Here]] to see the Factory Parts Catalog page in the Sportsterpedia for parts catalog uses and a full list of parts catalog numbers from 1957 to present. \\ | ||
+ | (complete list of other parts catalogs and supplement catalogs that pertain to each year model on the bottom of that page) \\ | ||
+ | Some often acquire several year model parts catalogs and that page will help you decide which ones are right for you. \\ | ||
+ | |||
+ | **Suggested Manuals**: \\ | ||
+ | |||
+ | * **Factory Service Manual (FSM)**: | ||
+ | * **Original**: 1970-1973 Sportster XL/XLH/XLCH Service Manual (99484-73) in a loose leaf binder | ||
+ | * **Latest Edition**: 1970-1978 Sportster XL/XLH/XLCH/XLT-1000 Service Manual (99484-78) in book bound form | ||
+ | * **Factory Parts Catalogs**: | ||
+ | * **Original**: 1962-1973 XL/XLCH-1000 Parts Catalog Supplement (99451-73) | ||
+ | * Issued September, 1972. | ||
+ | * Updates the 1961-1971 full parts catalog (99451-71). | ||
+ | * Lists closest to original parts available for 1973 models. | ||
+ | * **Use With**: 1961-1971 XL/XLCH-1000 Parts Catalog (99451-71) \\ Issued September, 1970. Full parts catalog and lists parts available in 1971 for 1954-1971 models. | ||
+ | * **Latest Edition**: 1954-1978 Sportster XLH/XLCH-1000 Parts Catalog (99451-78B) | ||
+ | * Issued in 1989. | ||
+ | * Full catalog and lists parts available in 1989 for 1954-1978 models. | ||
+ | * Includes some parts that were not available in the -78A catalog. | ||
+ | * **Factory Owners Manual**: | ||
+ | * 1973 XL-1000/XLCH-1000 Owners Manual (99466-73) | ||
+ | |||
+ | **Pics of Manual Covers**. \\ | ||
+ | Below are pics of used manual covers (original and latest editions) related to 1973 model Sportsters. \\ | ||
+ | See the full list of pertinent catalogs in the link above. \\ | ||
+ | Click on any pic below to enlarge: \\ | ||
+ | |||
+ | | 1970-1973 FSM (99484-73) \\ loose leaf outside cover | 1970-1978 FSM (99484-78) \\ (latest) | | ||
+ | |{{:sportster_history:l001-fsm-1973_edition_cover_99484-73_for_1970-1973_loose_leaf_1_outside.jpg?direct&200|}}|{{sportster_history:l001-fsm-1978_edition_cover_99484-78_for_1970-1978.jpg?direct&200|}}| | ||
+ | |||
+ | | 1961-1971 \\ Parts Catalog (99451-71) | 1962-1973 Parts \\ Catalog Supplement (99451-73) | 1954-1978 \\ Parts Catalog (99451-78B) | | ||
+ | |{{:sportster_history:l002-pc-1971_edition_cover_99451-71_for_1961-1971.jpg?direct&200|}}|{{:sportster_history:l002-pc-1973_edition_cover_99451-73_supplement.jpg?direct&200|}}|{{:sportster_history:l002-pc-1978_edition_cover_99451-78b_for_1954-1978.jpg?direct&200|}}| | ||
+ | |||
+ | ===== The Ironhead Multi-Year Parts Catalog Curse ===== | ||
+ | Below is a summary of an article on the Sportsterpedia Parts Catalogs page regarding parts book errors. \\ | ||
+ | You can also read the full article from this link: [[techtalk:miscres:miscres12#the_ironhead_multi-year_parts_catalog_curse|The Ironhead Multi-Year Parts Catalog Curse]]. \\ | ||
+ | Due to all of the errors and non corrected editions, it's always a good idea to acquire several year parts catalogs surrounding your year model. \\ | ||
+ | Which year catalogs you'll need will depend on many factors but the main Parts Catalog page in the Sportsterpedia will help you decide which ones you need. \\ | ||
+ | [[techtalk:miscres:miscres12|Click Here]] to see the Parts Catalog page. A full chart of all the parts catalogs made for Ironheads is at the bottom of the page. \\ | ||
+ | |||
+ | * Not all multi-year catalogs will list factory installed parts on your bike. | ||
+ | * You may need several year catalogs to determine factory installed parts for your year model. | ||
+ | * Some parts first appeared or only appeared in Parts Supplements, Service Bulletins or other literature | ||
+ | * Later catalogs may show parts for older models that were never factory installed on them. | ||
+ | * Some catalogs have missing parts and/or missing models in some parts listings. | ||
+ | * Some illustrations do not have a part number listed. | ||
+ | * Drawings may or may not look like your part number. | ||
+ | * Some exploded parts diagrams show the assembly in the wrong order or missing pieces. | ||
+ | * There may be misleading information about parts that fit your year model. | ||
+ | * Fastener lengths and thread pitch may change depending on catalog used. | ||
+ | * The MoCo knew about and tried to correct at least some of the parts catalog mistakes. | ||
+ | |||
+ | ===== Search the Sportsterpedia ===== | ||
+ | See the Navigation menu on the upper left of this page. \\ | ||
+ | From there you can go to the main Ironhead section menu, the Reference section for general and in-depth procedures, and the Misc Resources for documentation. \\ | ||
+ | ===== Illustrations ===== | ||
+ | The following illustrations are displayed for historic and period specific parts identification only. Refer to the original OEM documents for additional information. ((illustrations from various academic journals)) \\ | ||
+ | Click on any illustration below to enlarge. \\ | ||
+ | |||
+ | General dimension drawing for 1973-1978 XLH / XLCH frames: \\ | ||
+ | This is the 'correct' drawing for late 1973-1978 long frames. Dims are also good for 1967-1969 XLH and 1970-E1973 (all models). ((Dr Dick of the XLFORUM http://xlforum.net/forums/showpost.php?p=4370194&postcount=58)) \\ | ||
+ | |||
+ | {{:sportster_history:illust_-_frame_dims_-_general_1973-1978_xlh_xlch.png?direct&400|}} \\ | ||
====== Specifications ====== | ====== Specifications ====== | ||
+ | [[techtalk:menu#ironhead_technical_categories|Click Here]] for the main technical menu in the Sportsterpedia. \\ | ||
+ | Also see the "Misc Resources" section on the bottom of that page for technical docs and information. \\ | ||
==== Model Designations ==== | ==== Model Designations ==== | ||
* XLH, XLCH | * XLH, XLCH | ||
Line 50: | Line 140: | ||
==== Engine ==== | ==== Engine ==== | ||
* Engine type: 4 cycle Overhead Valves, 45 degree V2 ((Harley-Davidson 1957 - 1969 Service Manual)) | * Engine type: 4 cycle Overhead Valves, 45 degree V2 ((Harley-Davidson 1957 - 1969 Service Manual)) | ||
+ | * Hemi-spherical style heads | ||
* Displacement: 60.9 ci / 997.5 cc (1,000 cc advertised) | * Displacement: 60.9 ci / 997.5 cc (1,000 cc advertised) | ||
* Compression Ratio: 9:1 | * Compression Ratio: 9:1 | ||
Line 58: | Line 149: | ||
* Torque: 52 ft-lb @ 3800 RPM | * Torque: 52 ft-lb @ 3800 RPM | ||
* 4 Cams | * 4 Cams | ||
- | * Oil Pump: Gear driven type oil pump. [[techtalk:ih:oil03|Click Here ]] for the IH Oil Pump section of the Sportsterpedia. | + | * [[techtalk:ih:oil03|Gear driven type oil pump]]. \\ Oil pump pressure (gauge mounted in place of oil pressure switch): |
- | * Oil pump pressure (gauge mounted in place of oil pressure switch): | + | |
* Minimum: 3-7 psi (idle) | * Minimum: 3-7 psi (idle) | ||
* Maximum: 15 psi (60 mph in high gear) | * Maximum: 15 psi (60 mph in high gear) | ||
* Normal riding conditions: 4-15 psi | * 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 | + | * [[techtalk:ih:engctl01#battery_ignition_circuit_breaker_points_timer_distributor|XLH/XLCH Ignition]]: Breaker Point and Coil Ignition System (points are in the nose cone in the cam cover) |
+ | * Point Gap: .018" | ||
+ | * Dwell: 140° at 2000 RPM | ||
+ | * Ignition Timing | ||
+ | * Advanced: 40° (17/32") BTDC | ||
+ | * Retarded: 10° (1/32") BTDC | ||
* Spark Plugs | * Spark Plugs | ||
- | * #4 for break. | + | * #4 for break-in. |
* #5 for everyday use and hard service. | * #5 for everyday use and hard service. | ||
+ | * Gap: .025"-.030" | ||
+ | * [[techtalk:ih:carb01#bendix_zenith_i6p12_carb_1972-early_1976|Fuel System]]: Bendix/ Zenith I6P12 carburetor. | ||
+ | * Starter | ||
+ | * XLCH: [[techtalk:ih:engctl03|Kick Start]] only. | ||
+ | * XLH: [[techtalk:ih:engctl02|Electric Start]] only (Prestolite). | ||
==== Capacities ===== | ==== Capacities ===== | ||
Line 84: | Line 184: | ||
* Speeds - 4 Forward | * Speeds - 4 Forward | ||
* Number of Sprocket Teeth (XLH / XLCH) | * Number of Sprocket Teeth (XLH / XLCH) | ||
- | * XLH: | + | * Engine: 34 |
- | * Engine: 34 | + | * Clutch: 59 |
- | * Clutch: 59 | + | * Transmission: 20 / 21 |
- | * Transmission: 20 | + | * 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 | + | * Rear Wheel: 51 |
- | * XLCH: | + | * Gear Ratios (XLH / XLCH with 20 teeth trans sprocket) |
- | * 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 | + | |
- | * Standard Gear Ratios (XLH / XLCH) | + | |
* 1st: 11.16:1 | * 1st: 11.16:1 | ||
* 2nd: 8.08:1 | * 2nd: 8.08:1 | ||
* 3rd: 6.11:1 | * 3rd: 6.11:1 | ||
* 4th: 4.42:1 | * 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 MM90-19T (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 ===== | + | ====== Models ====== |
- | ==== XLH 1000 ==== | + | ===== XLH 1000 ===== |
* | * | ||
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- | ==== XLCH 1000 ==== | + | ===== XLCH 1000 ===== |
* | * |