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HSR42/45/48 Carburetor Rebuild Kits
No. Description Mikuni No. Order No.
59A. Idle Adjuster Screw (Short) 990-605-065 007-484
60. Air Jet (Blank) BS30/97 002-149
61. Needle Jet, #723 Series 784-430000 Pg.206
62. Nozzle, Accelerator Pump Std. TM42/11-70 007-487
Nozzle, Accelerator Pump Optional sizes Pg.171
63. O-Ring, A/P Nozzle VN124.063 007-163
64. Pilot Jet #25 (#20 Sporty) VM28/486 Pg.212
65. Extender, Main Jet (HSR42/45) TM42/12 007-722
65A. Extender, Main Jet (HSR48) TM42/12-1A 007-707
66. Main Jet# 160 (HSR42) N100.604-160 004-204
Main Jet #175 (HSR45) N100.604-175 004-210
Main Jet #190 (HSR48) N100.604-190 004-216
Main Jet *Optional Sizes N100.604 Pg.214
67. O-Ring, Needle Valve 616-33003 007-470
68. Screw, Needle Valve Retainer VM13/216 007-174
69. Needle Valve Assembly (HSR42/45) 786-27001-4.2 007-476
69A. Needle Valve Assembly (HSR48) 786-27002-1A-4.5 007-708
70. Float Assembly 859-32027 007-497
71. Pin, Float BV26/22 002-107
72. Screw, Float Pin C2=0410 007-620
73. Packing, Float Bowl 616-94028 007-472
74. Float, Chamber Body TM42/05 007-500
75. Hose, Overflow N122.028 007-630
76. O-Ring, Drain Plug VM28/254 002-531
77. Drain Plug (HSR42/45) TM32/41 007-646
77A. Drain Plug (HSR48) TM32/41-1D 007-713
78. Screw, Float Bowl C2=0412-B 007-201
79. Rod, A/P TM36/44-1A 007-191
80. Boot, A/P Rod TM36/64 007-195
81. Plunger, A/P TM36/60 007-198
82. Spring, A/P VM14SC13/89 007-200
83. Rubber Cap, Purge Port (not shown)N198.063 007-716
HSR42/45/48 New Style Replacement Parts
• Lined through part numbers are no longer available.
Mikuni Part No. Highlighted in BOLD RED are included in rebuild kit.
No. Description Mikuni No. Order No.
1. Screw, Top Cover 4x10mm C5=410-B 007-624
2. Screw, Top Cover 4x16mm (qt2) CW2=0416-B 002-615
3. Top Cover (HSR42/45) 776-39005 007-741
3A. Top Cover (HSR48) HS42/081 007-691
4. Gasket, Top Cover TM42/04 007-480
5. E-Ring, Jet Needle BS32/126 002-455
6. Washer, Jet Needle Clip 826-03002 007-267
7. Jet Needle (HSR42) Std. J8-8DDY01-97 007-082
Jet Needle (HSR45) Std. J8-8CFY02-97 007-102
Jet Needle (HSR48) Std. J8-8CFY15-97 007-097
8. Lever, Throttle Valve (HSR42/45) TM42/03 007-742
8A. Lever, Throttle Valve (HSR48) TM42/08-1A –––––––
9. E-Ring, Link Lever B40I/56 007-616
10. Packing, Link Lever B40I/10 002-629
11. Pin, Link Lever 834-23041 007-743
12. Throttle Valve (Slide) TM42/08-3.0 007-432
13. Screw, Needle Retainer 739-13002 007-692
14. Clip, Needle Retainer TM42/16 007-671
15. Sealing Ring, T.V. (HSR42/45) TM42/13 007-723
15A. Sealing Ring, T.V. (HSR48) TM48/04 –––––––
16. Seal, Throttle Valve TM42/10 007-670
17. Pulley, Cable Bracket 925-98006 007-693
18. E-Ring, Cable Bracket T53974 007-694
19. Bracket Assy., Cable TM42/51 007-695
19A. Bracket Assy., Sportster/Buell TM42/53 007-724
20. Bolt, Bracket B3=0520-B 007-696
21. Spacer, Bracket VM28/204 007-697
22. Plate, Lock Tab TM42/38 007-675
23. Screw C2=0514-B 007-698
24. Guide Holder (Starter) 640-12001 007-161
25. Spring, Starter Plunger VM14/241 007-678
26. Starter Plunger N189.192 007-635
27. Body (HSR42/45) TM42/06 –––––––
27A. Body (HSR48) TM48/02 –––––––
28. Seal, Spigot Body 616-94029 007-473
29. Ring (Steel) 925-19011 –––––––
30. Lever, A/P TM42/43 007-699
31. Pin, Throttle Lever N138.019 007-171
32. Lever, Throttle TM42/48 007-700
33. Spring, Accelerator Pump M12F/46-BB 007-629
34. Screw, Accelerator Adjust MC-0316-B 007-193
35. Spring, Accelerator Pump TM42/47 007-744
36. Mixing Body (HSR42/45) TM48SS1/01-0 –––––––
36A. Mixing Body (HSR48) TM48SS1/01 –––––––
37. Packing, Shaft (Plastic) BS36-95 007-615
38. Adjusting Screw, A/P TM42/36 007-701
39. O-Ring, A/P Screw B30/205 007-188
40. Bolt TM40/89 007-669
40A. Plate, Lock Tab for Shaft TM42/17 007-703
41. Pin, Return Lever BN38/43 007-617
42. Lever, Return TM42/46 007-745
43. Screw, Throttle Stop B30/1069 007-746
44. Nut, Throttle Stop N3=04 007-637
45. Spring, Throttle Return TM42/19 007-672
46. Shaft, Throttle 700-15012 –––––––
47. Plate, Fuel Joint Retainer TM42/15 007-704
48. Screw, Fuel Joint Retainer C2=0410-B 007-705
49. Screw, Pilot Air Adjusting 604-20614 007-706
50. Spring, Pilot Air Screw N133.206 007-137
51. Washer, Pilot Air Screw VM12/205 007-482
52. O-Ring, Pilot Air Screw N133.037 002-858
53. Fuel Joint TM40/27 007-667
54. O-Ring, Fuel Joint KV/10 002-709
55. Packing, Idle Adjuster B30/398 007-614
56. Washer, Idle Adjuster (steel) VM22/138 007-680
57. Spring, Idle Adjuster 730-09018 007-603
58. Ring, Idle Adjuster 925-15001 007-612
59. Idle Adjuster Screw (Long) TM42/32 007-674
Kit contains GENUINE Mikuni parts, all the necessary parts and gaskets to
rebuild an HSR carburetor. Includes needle valve assembly, o-rings, gaskets
and screws. Sold as a kit.
Mikuni No. Description Order No
KHS-016 with 4.2 Needle Vlv. Assy. HSR42/45 002-989
KSR42/45 with 4.5 Needle Vlv. Assy. HSR48 002-982
Exploded
View No. Qt Contents
4. 1 Gasket, Top Cover
5. 1 E-Ring, Jet Needle
6. 1 Washer, Jet Needle
52. 1 O-Ring, Pilot Air
54. 2 O-Ring, Fuel Joint
63. 1 O-Ring, A/P
67. 1 O-Ring, Needle Valve
68. 1 Screw, N.V. Retainer
69 1 Needle Valve Assy 4.2 (HSR42/45)
69A. 1 Needle Valve Assy 4.5 (HSR48)
73. 1 Packing, Float Bowl
75. 1 Hose, Overflow
76. 1 O-Ring, Drain Plug
78. 4 Screw, Float Bowl (short)
80 1 Boot, A/P Rod
HSR42/45/48 New Style Parts
V
intage
i
ntake
e
ngine
s
uspension
c
ontrol
e
lectrical
c
hemical
t
ools
W
atercraft
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