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sportster_history:1971_sportster [2021/09/15 00:51]
hippysmack [Engine]
sportster_history:1971_sportster [2024/01/25 17:52] (current)
hippysmack
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 ===== Frame VIN Numbers ===== ===== Frame VIN Numbers =====
- 
 Starting in 1970, the only numbers used for the purpose of identification are on the right neck and frame downtube. 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.   * The frame is stamped with a Vehicle Identification Number (VIN)identification.
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 ===== Engine Serial Numbers ===== ===== 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 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. \\ However, 1970 is a one year engine with exception of some early 1971 models with cases carried over from the 1970 batch. \\ The VIN pad on those is in a different position from every other year which is between the front two lifters. ((Ferrous Head of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1936551&​highlight=VIN&​page=2))+  * The engine VIN is stamped on the right side of the engine crankcase between the cylinders. \\ However, 1970 is a one year engine with exception of some early 1971 models with cases carried over from the 1970 batch. \\ The VIN pad on those is in a different position from every other year which is between the front two lifters. ((Ferrous Head of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​180165-confused-by-vin-70-or-73/​page2?​t=1936551&​highlight=VIN&​page=2)) 
 + 
 +====== 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. \\ 
 +[[techtalk:​miscres:​miscres10|Click Here]] to view the Factory Service Manual page in the Sportsterpedia. \\ 
 + 
 +**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**:​ 1970-1971 Sportster Service Manual (99484-71) 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**:​ 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. 
 +      * Lists closest to original parts available for 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**: 
 +    * 1971 Sportster Owners Manual (99466-71)  
 + 
 +**Pics of Manual Covers**. \\ 
 +Below are pics of used manual covers (original and latest editions) related to 1971 model Sportsters. \\ 
 +See the full list of pertinent catalogs in the link above. ​ \\ 
 +Click on any pic below to enlarge: \\ 
 + 
 +|  1970-1971 FSM (99484-71) ​ \\ loose leaf outside cover  |  1970-1978 FSM (99484-78) \\ (latest) ​ |  1971 Owners Manual (99466-71) ​  | 
 +|{{:​sportster_history:​l001-fsm-1971_edition_cover_99484-71_for_1970-1971_loose_leaf_1_outside.jpg?​direct&​200|}}|{{sportster_history:​l001-fsm-1978_edition_cover_99484-78_for_1970-1978.jpg?​direct&​200|}}|{{:​sportster_history:​l003-om-1971_edition_cover_99466-71.jpg?​direct&​200|}}| 
 + 
 +|  1961-1971 \\ Parts Catalog (99451-71) ​ |  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-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 frame dimension drawings: \\ 
 +  * (L) for 1970-1972 XLH / XLCH "long frames":​ \\ What was done here was to mod the dims on the earlier frame drawing and call it a day so this particular drawing isn't a solid representation. 
 +  * (R) 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 https://​www.xlforum.net/​forum/​sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​148782-animal-mother-reigns/​page4?​postcount=58#​post3178758)) \\ 
 + 
 +{{:​sportster_history:​illust_-_frame_dims_-_general_-_1970-1972_xlh_xlch.png?​direct&​400|}} {{:​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. \\ [[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. \\ 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 84: Line 168:
       * Gap: .025"​-.030"​       * Gap: .025"​-.030"​
   * [[techtalk:​ih:​carb01#​tillotson_hd_carb_1966-1971|Fuel System]]: Tillotson HD carburetor.   * [[techtalk:​ih:​carb01#​tillotson_hd_carb_1966-1971|Fuel System]]: Tillotson HD carburetor.
-  * [[techtalk:​ih:​engctl02|Starter]] +  * Starter 
-    * XLCH: Kick start only. +    * XLCH: [[techtalk:​ih:​engctl03|Kick Start]] only. 
-    * XLH: Electric ​start only (Prestolite).+    * XLH: [[techtalk:​ih:​engctl02|Electric ​Start]] ​only (Prestolite).
  
 ==== Capacities ===== ==== Capacities =====