Here are a number of Shop Dope / Service Bulletins that pertain to the K and Sportster models.
Lloyd at Mostly Ironheads contributed most of them. There may be a few more which we haven't discovered yet - we'll keep looking!
Service Shop Dope 313
January 17, 1951
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Service Shop Dope 313A
December 10, 1951
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Service Shop Dope 328
June 4, 1952
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Service Shop Dope 332
April 23, 1952
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Service Shop Dope 337
December 17, 1952
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Service Shop Dope 345
January 15, 1954
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Service Shop Dope 346
March 1, 1954
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Service Shop Dope 346A
June 1, 1954
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Service Shop Dope 347
September 29, 1954
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Service Shop Dope 349
January 15, 1955
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Service Shop Dope 356
June 1, 1955
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Service Shop Dope 361
October 27, 1955
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Service Shop Dope 362
November 11, 1955
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Service Shop Dope 363
December 15, 1955
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Service Shop Dope 364
November 16, 1955
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Service Shop Dope 366
December 19, 1955
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Service Shop Dope 368
January 3, 1956
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Service Shop Dope 374
February 22, 1956
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Service Shop Dope 375
June 1, 1956
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Service Shop Dope 376
June 8, 1956
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Service Shop Dope 377
September 1, 1956
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Service Bulletin 380
January 31, 1957
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Service Bulletin 381
January 31, 1957
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Service Bulletin 385
March 15, 1957
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Service Bulletin 386
March 22, 1957
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Service Bulletin 388
April 1, 1957
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Service Shop Dope 389
5-1-57
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Service Bulletin 392
November 27, 1957
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Service Bulletin 395
December 16, 1957
Instructions for 37984-57
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Service Bulletin 397
February 14, 1958
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Service Bulletin 399
March 15, 1958
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Service Bulletin 403
December 15, 1958
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Service Bulletin 404
January 15, 1959
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Service Bulletin 406
April 15, 1959
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Service Bulletin 407
May 22, 1959
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Service Bulletin 414
February 12, 1960
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Service Bulletin 415
February 15 , 1960
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Service Bulletin 418
April 6, 1960
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Service Bulletin 419
April 22, 1960
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Service Bulletin 429
December 16, 1960
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Service Bulletin 438
March 28, 1961
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Service Bulletin 443
May 12, 1961
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Service Bulletin 453
October 13, 1961
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Service Bulletin 454
December 4, 1961
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Service Bulletin 455
December 6, 1961
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Service Bulletin 456
December 7, 1961
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Service Bulletin 458
January 12, 1962
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Service Bulletin 465
July 9, 1962
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Service Bulletin 471
March 15, 1963
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Service Bulletin 474
April 26, 1963
Instructions for 92050-62
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Service Bulletin 478
August 30, 1963
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Service Bulletin 121M
October 18, 1963
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Service Bulletin 490
July 7 , 1964
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Service Bulletin 491
July 7 , 1964
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Service Bulletin 494
September 15, 1964
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Service Bulletin 503
December 31, 1964
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Service Bulletin 507
February 18, 1965
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Service Bulletin 515
June 11, 1965
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Service Bulletin 518
September 10, 1965
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Service Bulletin 521
October 11, 1965
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Service Bulletin 527
December 1, 1965
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Service Bulletin 534
February 17, 1966
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Service Bulletin 537
March 22 , 1966
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Service Bulletin 541
July 15 , 1966
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Service Bulletin 545
October 24, 1966
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Service Bulletin 545A
June 7, 1968
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Service Bulletin 546
October 21, 1966
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Service Bulletin 547
October 24, 1966
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Service Bulletin 553
February 24, 1967
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Service Bulletin 561
October 16, 1967
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Service Bulletin 562A
May 1, 1969
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Service Bulletin 563
November 29, 1967
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Service Bulletin 564
January 15, 1968
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Service Bulletin 567
March 25, 1968
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Service Bulletin 571
May 21, 1968
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Service Bulletin 572
June 10, 1968
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Service Bulletin 582
December 17 , 1968
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Service Bulletin 588A
June 23, 1969
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Service Bulletin 591
June 23, 1969
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Service Bulletin 592
June 17, 1969
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Service Bulletin 593
June 17, 1969
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Service Bulletin 605
November 28, 1969
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Service Bulletin 608
April 9, 1970
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