THE ASSOCIATED SERIAL
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NOTE:

This database is currently under construction.  I am adding serial numbers/pictures daily.  Check back to see your engine, if I have a picture of it, or to see engines that interest you if they are not posted yet.  Please do e-mail pics with serial number of any engines that you do not see listed.  Thank you in advance for your assistance!  

This Is A Database of Surviving Serial Numbers That I Have Witnessed.  

These photos consist of all sizes of Associated built engines located all over the world.  Any photo that I have personally taken at shows, sales and auctions as well as those e-mailed to me by engine owners and a few found posted on the internet.  As always, ownership is anonymous and if any picture is requested to be removed, I will gladly do so.  I will also be happy to update any picture with a better shot if any one desires to e-mail/snail mail me such a picture.  E-mail photos to ksmigle @ hotmail.com (Remove Spaces) I would also appreciate any corrections!

The one thing I want to accomplish by posting these pics of various engines according to serial number is so that you can study various changes to design and style.  VERY little documentation exists so the best way to document how these engines evolved is to see the engines themselves.

Please, send me your engine pictures with serial numbers listed so I can add them to this listing.  This is a very important process of historical verification.  I hope these pictures can be used as a great reference tool.

Make note that some Iowa Oversize engines of 4HP & larger seem to have an "A" designation at the end of the serial number. I have included this letter "A" in the listing of these engines that I have pictured. If I have listed more than one photo of a non-Iowa Oversize engine, I have given it a small "a" designation. Do not confuse a serial number with a small "a" at the end as being an Iowa Oversize engine.

These serial numbers do not fit into any system of numbering.  The only thing consistent about these engines is that they are all very early engines.  I will only guess and say that they were numbered before a system of numbering was devised.
1181 1819 2147 8777 8985 8985a

1 1/2 HP Busy Boy Engines
200121 201034 201689 202480 202703 203543 204156 204435 204435a
204755 205046 205545

1 1/2 HP Johnny Boy Engines
250256 250256a 251421 251571 251810 251883 252632 253219 254045
255450 256626 256794 256982 257905 258335

1 3/4 HP Air Cooled Chore Boy & 2HP AC Iowa Oversize Engines
21819 22664 25237 26275 27087 27986 28449 29835 30033 30393
31485 32086 32211 32796 35712 36129 37070 37070a 37105 37695

1 3/4 HP Water Cooled Chore Boy & 2 HP WC Iowa Oversize Engines
305041 305779 307564 310597 310884 313443 313558 313653 314770
315966 316866 317959 318300 322669 323937 324223 324861 326447
327905 328973 329100 329347 333795 335611 336188 336432 337852
339519 339565 340950 341165 342086 345098 345726 346538 347312
347324 348267 348403 348438

2 1/4 HP Water Cooled Hired Man & 2 1/2 HP WC Iowa Oversize Engine
100391 101313 101704 103362 103388 104777 104797 105460 108484
112640 113xxx 113040 113512 113576 114421 116304 116580 118037
118318 118339 119769 120016 120220 121048 121151 121890 122014
122216 123188 124763 125084 127749 127898 128733 129738 129907
130200 130410 131727 133789 134937 136496 136924 140196 143322
144237 145088 146493 146606 160021 161136 161425 162006 162080
162839 163306 164316 164676 165451 166132 166321 167608 167907
167976 168004

2 1/4 HP Hired Hand Engines
150106 152076 154509 154587 155049 156965 157437

3 HP & 3 1/2 HP Iowa Oversize Engines
500154 500395 500605 500940 502473 502545 504652 505167 505811
506269 506623 507720 507999 508389 508862 510028 510408 512297
512314 512901 513453 514039 514501 514517 515120 515295 515421
515421a 515421b 514517

4 HP & 6HP Iowa Oversize Engines
400195 400415 400975 401029 401133 401140 401208 401866 401866a
402295 403054 403577 404479 405439 405784 405824 407338 407338a
408144 408457 408839 413404 414161 414696 414784 418195 418195a
420033A 420093A 420211A 420355A 420368A 450037 450037a 450037b

6 HP & 8 HP Iowa Oversize Engines
600010 600169 600275 600486 602162 603009 603815 603904 604396
604902 605822 606047 606296 606372 606809 607757 607872 608686
608078 609691 610518 611573 611739 611835 612003A 612229A 612292A

8 HP & 10HP Iowa Oversize Engines
800976 801100 801533 801732 802031 802059 802208 802308
802590 802642

12 HP & 15 HP Iowa Oversize Engines
900116 900201 900898 901090 901351 901541