Engine Serial Numbers Question
a compilation of pages of all kinds can be created with freeware such as "PDF24 Tools": https://tools.pdf24.org/de/
I scan the pages on a flatbed scanner and upload them to this software.
The software then creates a PDF document that is as small as possible, which can then be uploaded or sent a very simple process.
A comparable freeware program is certainly also available in English.
It is also a good idea to put the compilation online on free internet space and only post a download link wherever you like.
Only you will have access to the file, and you can edit it and post the latest version online.
I hope I have expressed myself reasonably clearly...

Mike
PS Of course, you can also download the freeware and edit everything at home without internet access; that would be my personal recommendation.
Open the sheet and download as a PDF file and see if it will do what you want it to do.
Last edited by Bryan Austin; Feb 24, 2026 at 02:59 PM.
I have to lock in to my Google account, to download this, probably...,
I will report on the success or failure later.
For example, if I digitize a 6-page article about the early Sportster K/KH models on paper using a flatbed scanner, and then combine these scans into a single PDF file using such software, the result of all 6 pages, which were previously perhaps 12 MB in size, is reduced to about 5 MB.
It always depends on the "resolution" at which I scan the material. Pages with photos require higher resolutions than pages from a spreadsheet that are completely free of graphics and contain only pure text.
Simply put, pages without graphics/photos can be saved very "small", pages with graphics/photos can also be saved, but these will then no longer be recognizable to the viewer later...
But that won't work, I'll find some websites on the topic for you, please be patient, thank you...
Mike
PS Modern scanner software "recognizes" what is presented to it, and the user decides on the quality of the output, on paper or digitally; that's all there is to it.

PSS You sit in front of your screen, turn down the resolution, and take a screenshot each time; the image on the monitor gets smaller and smaller until you can't see anything anymore...
Small as a postage stamp, but still the same picture; you won't be able to recognize anything anymore.
Sch*****! difficult to explain, sorry.
Last edited by Mike1956G; Feb 24, 2026 at 05:49 PM.
I am not getting much help from the community so I will leave this up for a short period of time, then the sheets may be set to private and access will have to be granted through a request. One consideration to be able to access may be if the requestee will participate in adding data or can in some other way help with the project.
So far I have only had four or five folks help with receiving data.
Here is the 1972 link. Other earlier sheets have been superseded by these new sheets and removed from the pages.
Master List - https://docs.google.com/spreadsheets...#gid=654758359
1971 - https://docs.google.com/spreadsheets...gid=1636865478
1972 - https://docs.google.com/spreadsheets...gid=1557861228
1973 - https://docs.google.com/spreadsheets...#gid=942732228
for those that enjoy social media, there is also a group getting started here: https://www.facebook.com/groups/815311208241041
For 1972 model Sportsters and Servi-Cars my VIN ranges are posted above.
For 1973 model Shovelheads I have 100 examples ranging from 1074+ thru 2319+. Three are 1As while the rest are 2As and 2Cs. I also have 15 examples ranging from 6372+ thru 7142+ which are 2As and 2Cs.
For 1973 model Sportsters I have 127 examples ranging from 4006+ thru 5058+. And 104 examples ranging from 6014+ thru 7177+. All my 1973 Sportster examples are 3As and 4As.
For Servi-Cars with VINs ending in H3 I have 16 examples ranging from 441++ thru 446++.
NB: although the 16 Servi-Cars have VINs ending in H3, were they all classed as 1973 models? I do not know. Several years ago on another forum someone claimed that some Servi-Cars with VINs ending in H3 were not sold as 1973 models but were instead sold as 1974 models. But this has NOT been confirmed.
For 1974 model Shovelheads I have 111 examples ranging from 1036+ thru 4713+. Two are 1As while the rest are 2As, 2Cs and 9Ds.
For 1974 model Sportsters I have 228 examples ranging from 1049+ thru 4727+. These are all 3As and 4As.
For 1975 model Shovelheads I have 129 examples ranging from 1021+ thru 5174+. Two are 1As while the rest are 2As, 2Cs and 9Ds.
For 1975 model Sportsters I have 166 examples ranging from 1056+ thru 5126+. These are all 3As and 4As.
For 1976 model Shovelheads I have 173 examples ranging from 1000+ thru 5708+. One is 1A while the rest are 2As, 2Cs and 9Ds.
For 1976 model Sportsters I have 191 examples ranging from 1006+ thru 5529+. These are all 3As and 4As.
Regarding blocks, or ranges, of VINs, sometimes this may seem to be clear while at other times it does not. For example and as I mentioned above, for 1973 model Shovelheads I have 100 ranging from 1074+ thru 2319+. I have no 1973 model Sportster or Servi-Car VINs in that range.
But from another year I have photos of three VINs in particular: a Shovel at 2022+; a Servi-Car at 2023+; and a Shovel at 2024+. Difference between lowest and highest of those three is 14. How did the factory assign those VINs? I dont know.
From yet another year I have photos of a certain Shovel VIN and a certain Sportster VIN. Both are 2427+ and they are consecutive.
Over the coming days/week Ill go through my Shovel and Sportster VINs for 197780.
Eric
For 1972 model Sportsters and Servi-Cars my VIN ranges are posted above.
MY THEORY
Below I listed the 1973 Milwaukee/York assembly line "Single Set" of sequence numbers followed by the "Three Large Block Groups" from that same single set of sequence numbers.
The Single Set
- 10000 to 72999 all units assembled during the 1973 year from about August 1972 to about June 1973...with overflows or special orders of some units well into the 74' year...such as the (5A) model Servi-Cars shipped to South America
- 10000 to 29999 - Consisting of 6 large bike models, 1A, 2A, 3A, 2C, 4A and 5A, assembled at the Milwaukee Plant
30000 to 39999- Consisting of 6 large bike models, 1A, 2A, 3A, 2C, 4A and 5A, assembled at the Milwaukee Plant, appear to have not been assigned to any units.- 40000 to 50599 - Consisting of 6 large bike models, 1A, 2A, 3A, 2C, 4A and 5A, assembled at the Milwaukee Plant
56000 to 59999- Consisting of 6 large bike models, 1A, 2A, 3A, 2C, 4A and 5A, assembled at the Milwaukee Plant, appear to have not been assigned to any units- 60000 to 72999 - Consisting of 6 large bike models, 1A, 2A, 3A, 2C, 4A and 5A, assembled at the York Plant during the AMF move from Milwaukee to York
What I need is the model code in front of each sequence number you provide/provided in order to accurately add to the master list. From what you provided, those numbers could be for one of three models of Shovelheads;
- 1A1074xH3
- 2A1074xH3
- 3A1074xH3
NB: although the 16 Servi-Cars have VINs ending in H3, were they all classed as 1973 models? I do not know. Several years ago on another forum someone claimed that some Servi-Cars with VINs ending in H3 were not sold as 1973 models but were instead sold as 1974 models. But this has NOT been confirmed.
For 1974 model Sportsters I have 228 examples ranging from 1049+ thru 4727+. These are all 3As and 4As.
This is also where the 9D's come in. Some say a rare few were H3's but some say there were no H3's.
For 1975 model Sportsters I have 166 examples ranging from 1056+ thru 5126+. These are all 3As and 4As.
For 1976 model Shovelheads I have 173 examples ranging from 1000+ thru 5708+. One is 1A while the rest are 2As, 2Cs and 9Ds.
For 1976 model Sportsters I have 191 examples ranging from 1006+ thru 5529+. These are all 3As and 4As.
But from another year I have photos of three VINs in particular: a Shovel at 2022+; a Servi-Car at 2023+; and a Shovel at 2024+. Difference between lowest and highest of those three is 14. How did the factory assign those VINs? I don’t know.
Eric
Last edited by Bryan Austin; Feb 28, 2026 at 08:59 AM.
This one is 6 73, which translates to June 1973.
For 1977 model Sportsters I have 49 examples ranging from 000++ thru 023++ and these are all 7F. I also have 185 examples ranging from 1002+ thru 5323+. One is 7F, four are 2G and the rest are 3A or 4A.
For 1978 model Shovelheads I have 80 examples ranging from 1037+ thru 2961+ and 104 examples ranging from 6003+ thru 7969+. One is 1A, six are 2C and the rest are 2A, 2F, 3G or 9D.
For 1978 model Sportsters the lowest two I have are 022++ and 100++ and both are 7F. However the second of those was originally 023++ and its VINs ended in H7. But its engine VIN and frame VIN were lined out at the factory and new VINs were stamped on, including the year portion which became H8 and this is the XLCR I referred to in an earlier post. Other 1978 model Sportsters I have consist of 73 examples ranging from 1023+ thru 3048+. Thirteen are 7F and the rest are 3A or 4A.
For 1979 model Shovelheads I have 206 examples ranging from 2031+ thru 7063+. And six examples ranging from 8000+ thru 8035+ which I imagine may also have been general production models? In the overall total of 212 are a mixture of 2A, 2F, 3G, 5E, 6E, 7G and 9D.
For 1979 model Sportsters I have 154 examples ranging from 1004+ thru 4274+. But not long after that there may have been a break? Next I have 40 examples ranging from 5010+ thru 6961+. In the overall total of 194 are a mixture of 3A, 4A and 4E.
NB: some 1979 model Shovels and Sportsters use their CPN as the engine VIN and its mentioned in Service Letter ML-110.
For 1980 model Shovelheads I have 27 examples ranging from 005++ thru 051++. They are all 5G and the engine VIN is stamped on the side of the R-H case. I also have 166 examples ranging from 1017+ thru 5839+. One is 7H, one is 9H and three are 5H. The rest are 1H, 2A, 3G, 3H, 6E, 7G, 9D or 9G.
For 1980 model Sportsters I have 110 examples ranging from 1074+ thru 5821+ and these are all 3A, 4A or 4E.
Eric
The Best of Harley-Davidson for Lifelong Riders
From what I have found for the 71-73 models, what I can really use are only the VINs and certification dates that can bust up the large blocks that I have found. It would give a better understanding as to how many of each model was made for that year.
For 1971, I have the following;
I have the same format for the 72's and 73's...all three years confirming the use of a single set of sequence numbers (10000 to xxxxx) for those same 6 models for each year.
To sum up the 71' year, the numbers started with 10000 and ended somewhere around 34400. 34400 minus 10000 equals 24,400 Units Built.
Below is an example of a large block that needs to be broken up.
Last edited by Bryan Austin; Mar 5, 2026 at 01:29 PM.








