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W
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lectrical
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ngine
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intage
134
ORDER: 800-998-3529
TECH: 310-637-8330
PWK28 Standard Jetting Specifications
Size (mm)
Main
Slow Jet
Throttle
Float
Order
Jet Jet Needle Valve Height
No.
PWK28
#135
#38
46 JJH
3.5
19mm
016-144
A
B
D
PWK28 Carburetor Dimensions
Size (mm) A B C D
PWK28 35 49 83 147.4
Float Height
19mm
NOTE:
Do not remove parts that are not shown on this extended view.
No. Description
Keihin No.
Order No.
2A.
Starter Valve (pull knob) Complete 1166-818-2100
018-500
2B.
Choke Cable System Complete
018-501
*
See individual parts with asterisk
*50, *51, *52, *53, *54
3.
Float
W1310-080-9901
018-397
4.
Float Bowl Complete
N350-03A00
018-575
5.
Gasket, Float Bowl
W1354-042-9900
018-406
6.
Plug Screw
16162-ND4-7511-M1
018-128
7.
O-Ring, Plug Screw
16173-001-0040
018-664
8.
Float Valve Complete
W1362-020-9901
018-389
10.
Slow Jet
N424-21-xxx
Pg.148
11.
Jet Needle
N427-46-xxx
Pg.147
12.
Clip, Jet Needle
16115-169-0040
018-033
13.
Throttle Valve
N502-11H00 #3.5
018-582
Throttle Valve, Chrome
(see chart)
N502-52H00 #3.5
018-590
15A.
Top Cover
1030-844-2000
021-575
15B.
Top Cover (option)
1030-843-2200
021-586
16.
Gasket, Top
1202-837-2000
018-566
17.
Air Adjust Screw
W1446-231-9900
018-089
18.
Spring, Air Adjust Screw
W1711-416-9900
018-090
19.
Spring, Throttle Valve
1290-921-2000
018-532
20.
Clip, Float Valve
0405-013-1000
021-576
21.
Screw, Float Bowl
N114-04160
021-577
22.
Bowl, Vent Pipe
W9404-40090
021-578
23.
Overflow Pipe
95003-07042-31
018-534
24.
Float Pin
W9525-25250
018-670
25.
Clip
W9535-35000
018-098
26.
Main Jet (hex type)
99101-357-xxx
Pg.150
26A.
Main Jet SDGAA (round type)
99101-393-xxx
Pg.150
27A.
Cable Adjuster
W9581-59250
018-005
27B.
Cable Adjuster
1036-804-2000
018-542
28.
Nut, Cable Adjuster
W1793-130-9900
018-008
29.
Idle Adjuster
1034-831-2000
018-568
29.
Idle Adjuster (for Chrome T/V)
1034-853-2000
018-569
30.
Spring, Idle Adjuster
1290-923-2000
018-562
30.
Spring, (for Chrome T/V)
1290-963-2000
018-574
31.
Collar, Throttle Spring
1022-805-7000
018-564
32.
Screw, Top Cover
N114-04140
021-580
33.
Washer, Idle Adjuster
0301-078-1200
021-101
34.
Needle Jet
16164-169-0040
018-560
35.
Needle Jet Holder SDGAA
N413-11A00
–––––––
35A.
Needle Jet Holder
N413-12A00
021-581
*50.
Starter Valve (Choke Plunger)
W1275-028-9901
021-512
*51.
Spring
1290-922-2000
021-582
*52.
O-Ring,
0901-069-6000
021-527
*53.
Cable Holder
W1551-140-9900
021-583
*54.
Cap
16118-166-0040
018-002
Note:
If you see “SDGAA” on your carburetor’s stamped portion,
your main jet and needle jet holder have to be #parts 26A and 35.
PWK28 Replacement Parts
Keihin Part No. Highlighted in
BOLD RED
are included in rebuild kit.
PWK 28 Exploded View
Carburetors are intended for off-road riding
and racing use only. Not legal for use in
California or other locations where similar
pollution laws may apply.