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W

atercraft

t

ools

c

hemical

e

lectrical

c

ontrol

s

uspension

e

ngine

i

ntake

V

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.