The Keihin PWK “Air Striker” Motocross racing carburetor is refined to perfection and has set the standard among motocross racing carburetors. With its new features the PWK will continue to be the first choice in performance carbs for your 125, 250, Enduro or ATV. PWK Air Striker Carbs are available in two popular sizes to cover all your horsepower requirements.
PWK41
Standard PWK Description/Mark*
PWK28/ 29S” PWK33/ S46” PWK35/ 70R” PWK35 A.S. / S65” PWK36/ S63” PWK38/ 71R” PWK38 A.S. / S66” PWK39/ 72R” PWK41 Pro-Series
Standard Jetting
Special Set
016-144 016-148 016-150 016-160 016-163 016-153 016-167 016-155 016-156
016-189 016-191 016-192 016-197 016-198 016-194 016-199 016-195
Please Note: Special Set carbs are pre jetted to your request or specific application. Please specify exact jetting details or bike application for each special set carb you want to order.
Note: *“X00” represents product code stamped on the carb body just above the float bowl. A.S. = Air Striker carb
Standard Jetting
194
PWK28/ 29S” PWK33/ S46” PWK35/ 70R” PWK35 A.S. / S65” PWK36/ S63” PWK38/ 71R” PWK38 A.S. / S66” PWK39/ 72R” PWK41 Pro-Series
Slow Jet
Thr. Valve
Jet Needle
Main Jet
#38 #52 #68 #48 #55 #58 #55 #60 #60
3.5 6 6 4.5 5 6 7 6 6
46-JJH 48-CGL 48-DGK 48-DEK 48-DGJ 48-DEG 48-DDJ 48-DGH 48-DGH
#135 #165 #160 #160 #165 #172 #170 #160 #160
No
Description
Keihin No.
Order #
2A 2B 3 4 5 6 7 8 10 11 12 13
Starter Valve Comp. Starter Valve Comp. Float Float Bowl Comp. Gasket, Float Bowl Plug Screw O-Ring, PLug Screw Float Valve Com Slow Jet Jet Needle Clip, Jet Needle Throttle Valve Throttle Valve, Chrome Top Top (option) Gasket, Top Air Adjust Screw Spring, Air Adjust Spring, Throttle Clip, Float Valve Screw, Float Bowl Bowl, Vent Pipe Overflow Pipe Float Pin Clip Main Jet Main Jet (SDGAA) Cable Adjuster Cable Adjuster Nut, Cable Adjuster Idle Adjuster Idle Adjuster (for Chrome Slides) Spring Spring (for Chrome Slides) Collar, Th. Spring Screw Washer Needle Jet Needle Jet Holder (SDGAA) Needle Jet Holder Starter Valve Spring O-Ring Cable Holder Cap
1166-818-2100 See Asterisked No. W1310-080-9901 N350-03A00 W1354-042-9900 16162-ND4-7511-M1 16173-001-0040 W1362-020-9901 N424-21-q q q N427-46-q q q 16115-169-0040 N502-11x00 3.5 N502-52H00 3.5 1030-844-2000 1030-843-2200 1202-837-2000 W1446-231-9900 W1711-416-9900 1290-921-2000 0405-013-1000 N114-04160 W9404-40090 95003-07042-31 W9525-25250 W9535-35000 99101-357-q q q 99101-393-q q q W9581-59250 1036-804-2000 W1793-130-9900 1034-831-2000 1034-853-2000 1290-923-2000 1290-963-2000 1022-805-7000 Top N114-04140 0301-078-1200 16164-169-0040 N413-11A00 N413-12A00 W1275-028-9901 1290-922-2000 0901-069-6000 W1551-140-9900 16118-166-0040
018-500
15A 15B 16 17 18 19 20 21 22 23 24 25 26 26A 27A 27B 28 29 29 30 30 31 32 33 34 35 35A *50 *51 *52 *53 *54 NOTE:
018-397 018-575 018-406 018-128 018-664 018-389 See pg. 207 see pg. 205 018-033 018-582 Chart below 021-575 018-586 018-566 018-089 018-090 018-532 021-576 021-577 021-578 021-579 018-670 018-098 See pg. 206 See pg. 206 018-005 018-542 018-008 018-568 018-569 018-562 018-574 018-564 021-580 021-101 018-560 N/A 021-581 021-512 021-582 021-527 021-583 018-002
option 15-B 27-B
2-B
A
Ask dealer for details if you see q q q on part numbers.
If you see “SDGAA” on your carburetor’s stamped portion, your main jet and needle jet holder have to be 26A and 35.
Throttle Valve (chrome) Chart Cutaway Mark
Order No.
Keihin No.
1.0 2.0 3.0 3.5 (STD) 4.0 5.0 6.0
018-584 018-585 018-586 018-590 018-587 018-588 018-589
N502-52B00 N502-52C00 N502-52D00 N502-52H00 N502-52E00 N502-52F00 N502-52H00
195
PWK 33, 35, 36, 38, 39 PWK Carburetor Dimensions B
A D
C
SIZE (MM) PWK 33MM PWK 35MM
A
B
C
D
42
59
91
163.3
PWK 36MM PWK 38MM
46
63
91
171.6
PWK 39MM
46
63
91
171.6
PWK 28MM
35
49
83
147.4
Quad Vents / Air Strikers
*see part numbers 11, 12, 14, 15, 16,19, 27, 28, 31 from next drawing.
Rebuild Kit For: PWK 28 Motorcycle Carb PWK 35-39 Motorcycle Carb PWK 39 Snowmobile Carb
196
Order No. 020-112
020-110 020-111
Description
PWK33
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 22a 23 24 25 26 27 27a 27b 28 28a 29 29a 30 30a 31 32
Starter Valve Comp 018-500 Float 018-110 Float Bowl Comp 018-502 Gasket Float Bowl* 018-113 Plug Screw 018-128 O-Ring Plug Screw 018-664 Float Valve Comp* 018-504 Anchor Plate 018-506 Slow Jet N424-21-q q q Jet Needle N427-48-q q q Clip, Jet Needle* 018-033 Throttle Valve (chart below) N502-15-q q q Cable Holder 018-526 Top 018-528 Gasket* 018-016 Air Adjust Screw* 018-089 Spring* 018-090 Spring Throttle 018-530 Clip, Float Valve* 018-674 Screw, Float Bowl* 018-122 Bowl Vent Pipe 018-534 Bowl Vent Pipe NA Overflow Pipe 018-538 Float Pin 018-670 Clip 018-098 Main Jet 99101-357-q q q Cable Adjuster 018-542 Cable Adjuster 018-005 Cable Adjuster 018-306 Nut Cable Adjuster 018-544 Nut Cable Adjuster 018-008 Idle Adjuster (Plastic) 018-569 Idle Adjuster (Brass) NA Spring 018-574 Nut NA Collar* 018-550 Bowl Vent Pipe Comp NA (For Quad Vent) O-Ring, Jet Block NA *These parts are included in PWK rebuild kit.
PWK35
PWK36 Quad Vent
PWK38&39
PWK35 Air Striker
PWK38 Air Striker
018-505
018-506
018-505
N502-17x00
N502-17x00
N502-15X00
N502-17x00
018-530
018-531
018-530
018-531
018-535
018-535 NA
NA
NA
018-546
NA
018-546
NA
NA
018-548
NA
018-548
NA
NA
NA
018-537
NA
018-537
018-537
PWK35 - A/S
PWK38 - A/S
(See pg. 207) (See pg. 204) N502-16x00
NA
(See pg. 206) (25mm) (20mm)
021-532
PWK THROTTLE VALVE CHART Cutaway Mark Rich 0 3.0 4.0 4.5 5.0 5.5 6.0 6.5 7.0 8.0 8.5 9.0 Lean 9.5
PWK33
018-240 018-241 018-242 018-243 018-244 018-245
PWK35
PWK36 - Q/V
PWK38&39
018-508 018-509 018-510
018-517 018-518 018-519
018-517 018-518 018-519
018-511
018-520
018-520
018-512
018-521
018-521
018-513
018-522 018-523
018-522 018-523
018-524
018-524
018-517 018-518 018-519 018-240 018-241 018-242 018-243 018-244 018-245
018-520 018-521 018-522 018-523
018-514 018-515
018-524
197
