The following parts lists have been collated from the various Service Parts Lists. Notice the part called "Bulb rubber" or "Rubber bulb". This is apparently the pump assembly without mounting hardware. It is a non-serviceable assembly, so the internal rubber diaphragm and screen and check valve are not available as replacement parts. A possible repair process is covered in different articles. The production changes in chronological order are:

May 55	- 1500 start (c)10101	- AHH5798  Windscreen washer kit
	  may have adjustable jet or fixed jet 

Dec 57	- mid 1500 (c)45186	- No change of part number of the kit
	  Change to small adjustable jet (3rd type of jet?).
	  Change control assembly, tubes, rubber bulb, push button.

Apr 58	- Twin Cam start (c)501	- AHH5798  Windscreen washer kit 
          (same as 1500)

May 59	- 1600 start		- AHH5700  Windscreen washer kit
	   With recessed cups.

Nov 59	- mid 1600 (c)80390 and TC (c)2544 - AHH5983  Windscreen washer 
          kit.  Washer bottle neck increased from 1-1/2” to 2-3/16”, 
	  control module modified.

1500 Windscreen washer (optional extra)
AHH5798  Windscreen washer kit
7H9747     Bracket and container
7H9781       Bracket
7H9779       Container
7H9785       Cap
7H9777   Jet mounting assembly (2)                - adjustable jet
7H9746   Jet mounting assembly (2) - Fin.(c)45185 - fixed jet
27H9622  Jet mounting assembly (2) - Com.(c)45186 - small adjustable jet
27H9623    Jet (2)
7H9776   Control assembly with tubes                - Use with  7H9777 
17H9748  Control assembly with tubes - Fin.(c)45185 - Use with 17H9746 
27H9624  Control assembly with tubes - Com.(c)45186
7H9780     Nut - plunger
7H9782     Washer (shakeproof)
27H9626    Rubber bulb      - Com.(c)45186
7H9784     Collar - knurled
7H9783     Push-button knob
27H9625    Push-button knob - Com.(c)45186
7K9786   Tubing (state length)

1600 Windscreen washer (optional extra)
AHH5700  Windscreen washer kit             - Fin.(c)80389
AHH5983  Windscreen washer kit             - Com.(c)80390
7H9781   Bracket
7H9779   Container - 20 oz.(1-1/2" neck)   - Fin.(c)80389
7H9785     Cap assembly 1-1/2"             - Fin.(c)80389
13H227    Container - 20 oz.(2-3/16" neck) - Com.(c)80390
37H9716     Cap assembly 2-3/16"           - Com.(c)80390
13H231   Jet mounting assembly (2)  - Part no. change; was 27H9622
27H9623    Jet (2)
27H9654  Control assembly - Fin.(c)80389 - not available use 37H9730
37H9730  Control assembly - Com.(c)80390
27H9625    Knob
27H9655    Back nut (2)
LWN406     Washer shakeproof - Part no. change; was 7H9782
27H9626    Bulb rubber       - Fin.(c)80398
27H9824    Bulb rubber       - Com.(c)80390
7K9708   Tubing (A/R)  - Only available in multiples of feet

Twin Cam Windscreen washer (optional extra)
AHH5798  Windscreen washer kit (same as 1500)
7H9781     Bracket
7H9779     Container          - Small cap
7H9785     Cap                - Small cap
13H227     Container - 20 oz. - Large cap
37H9716      Cap assembly     - Large cap
27H9622  Jet mounting assembly (2) (small adjustable jet)
27H9623    Jet (2)
27H9624  Control assembly with tubes (same as late 1500)
27H9625    Knob
27H9655    Back nut (2)
7H9782     Washer shakeproof
27H9626    Bulb rubber
7K9708   Tubing (A/R)  - Only available in multiples of feet