Carburetor Reference Chart

If you are wondering what Mikuni carburetor(s) your Sea Doo PWC uses, all you need is the year/model and you can look it up below. The chart also has jetting and needle adjustment specs from the oem specs book that should help with tuning. The chart is separated by carburetor types and the low speed screw spec below is the start point and can go up to ¼ turn in either direction for tuning purposes. The chart should help out as well if you want to adapt a different carburetor to your ski.
More years will be added as well!

Also note I now offer special OEM Mikuni kits just for Sea Doo Dual Carbs
and also offer discounted OEM Mikuni Single Carb rebuild kits as well
so check here for info on that.

BN-38 (RB) = Mikuni BN 38mm Round Body Carburetor with Type 1 Base
BN-38 (SB) = Mikuni Super BN 38mm Square Body Carburetor with Type 1 Base
BN-38I (SB) = Mikuni Super BN 38mm Square Body Carburetor with Type 2 Base
BN-40I (SB) = Mikuni Super BN 40mm Square Body Carburetor with Type 2 Base
BN-46I (SB) = Mikuni Super BN 46mm Square Body Carburetor with Type 2 Base

YEAR MODEL ENGINE (CC) MAG (OR SINGLE) CARB P/N PTO CARB P/N CARB TYPE JETTING NEEDLE POP OFF (PSI) ADJUSTMENT COMMENTS
1989
SP
587
270500054
N/A
BN-38 (RB)
MAIN-85 PILOT-N/A
?
11.5 - 12.5
LOW- 1-3/4 HIGH- N/A
-
1990
SP
587
270500054
N/A
BN-38 (RB)
MAIN-100 PILOT-N/A
?
11.5 - 12.5
LOW- 1-3/4 HIGH- N/A
-
1990
GT
587
270500073
270500072
BN-38 (RB)
MAIN-110 PILOT-N/A
?
11.5 - 12.5
LOW- 1-1/2 HIGH- N/A
-
-
-
-
-
-
-
-
-
-
-
-
1991
SP
587
270500089
N/A
BN-38 (SB)
MAIN-127.5 PILOT-75
2.0
22 - 25
LOW- 1-1/2 HIGH- 1/4
-
1991
XP
587
270500093
270500092
BN-38 (SB)
MAIN-107.5 PILOT-65
2.0
22 - 25
LOW- 1-1/4 HIGH- 1/4
-
1991
GT
587
270500093
270500092
BN-38 (SB)
MAIN-107.5 PILOT-65
2.0
22 - 25
LOW- 1-1/8 HIGH- 1/4
-
1992
XP
587
270500151
270500150
BN-38 (SB)
MAIN-107.5 PILOT-62.5
2.0
22 - 29
LOW- 1-1/4 HIGH- 0
-
1992
GTX
587
270500151
270500150
BN-38 (SB)
MAIN-107.5 PILOT-62.5
2.0
22 - 29
LOW- 1-1/4 HIGH- 0
-
1993
SPX (SN 1-1500)
587
270500151
270500150
BN-38 (SB)
MAIN-107.5 PILOT-62.5
2.0
22 - 29
LOW- 1-1/4 HIGH- 0
-
1992
SP
587
270500152
N/A
BN-38 (SB)
MAIN-125 PILOT-67.5
2.0
22 - 29
LOW- 1 HIGH- 0
-
1992
GTS
587
270500152
N/A
BN-38 (SB)
MAIN-125 PILOT-67.5
2.0
22 - 29
LOW- 1 HIGH- 0
-
1993
XP
657
270500179
270500178
BN-38 (SB)
MAIN-125 PILOT-60
2.0
22 - 29
LOW- 1-1/4 HIGH- 0
-
1993
SP
587
270500182
N/A
BN-38 (SB)
MAIN-125 PILOT-67.5
2.0
22 - 29
LOW- 1 HIGH- 0
-
1993
SPI
587
270500182
N/A
BN-38 (SB)
MAIN-125 PILOT-67.5
2.0
22 - 29
LOW- 1 HIGH- 0
-
1993
GTS
587
270500182
N/A
BN-38 (SB)
MAIN-125 PILOT-67.5
2.0
22 - 29
LOW- 1 HIGH- 0
-
1993
SPX (SN 1501 ON)
587
270500184
270500183
BN-38 (SB)
MAIN-107.5 PILOT-62.5
2.0
22 - 29
LOW- 1-1/4 HIGH- 0
-
1993
GTX
587
270500184
270500183
BN-38 (SB)
MAIN-107.5 PILOT-62.5
2.0
22 - 29
LOW- 1-1/4 HIGH- 0
-
1994
XPI
657
270500196
270500195
BN-38 (SB)
MAIN-125 PILOT-60
2.0
22 - 29
LOW- 1-1/4 HIGH- 3/8
-
1994
SP
587
270500203
N/A
BN-38 (SB)
MAIN-142.5 PILOT-65
2.0
22 - 29
LOW- 1 HIGH- 0
-
1995
SP
587
270500203
N/A
BN-38 (SB)
MAIN-142.5 PILOT-65
2.0
21 - 37
LOW- 1-1/4 HIGH- 0
-
1996
SP
587
270500203
N/A
BN-38 (SB)
MAIN-142.5 PILOT-65
2.0
21 - 37
LOW- 1-1/4 HIGH- 0
-
1994
SPI
587
270500204
N/A
BN-38 (SB)
MAIN-147.5 PILOT-65
2.0
22 - 29
LOW- 1 HIGH- 0
-
1994
GTS
587
270500204
N/A
BN-38 (SB)
MAIN-147.5 PILOT-65
2.0
22 - 29
LOW- 1 HIGH- 0
-
1995
SPI
587
270500204
N/A
BN-38 (SB)
MAIN-147.5 PILOT-65
2.0
21 - 37
LOW- 1-1/4 HIGH- 0
-
1995
GTS
587
270500204
N/A
BN-38 (SB)
MAIN-147.5 PILOT-65
2.0
21 - 37
LOW- 1-1/4 HIGH- 0
-
1996
SPI
587
270500204
N/A
BN-38 (SB)
MAIN-147.5 PILOT-65
2.0
21 - 37
LOW- 1-1/4 HIGH- 0
-
1996
GTS
587
270500204
N/A
BN-38 (SB)
MAIN-147.5 PILOT-65
2.0
21 - 37
LOW- 1-1/4 HIGH- 0
-
1994
SPX
657
270500205
270500206
BN-38 (SB)
MAIN-125 PILOT-60
2.0
22 - 29
LOW- 1-1/4 HIGH- 3/8
-
1994
GTX
657
270500205
270500206
BN-38 (SB)
MAIN-125 PILOT-60
2.0
22 - 29
LOW- 1-1/4 HIGH- 3/8
-
1997
SP
717
270500289
N/A
BN-38 (SB)
MAIN-135 PILOT-57.5
2.0
21 - 37
LOW- 1-3/4 HIGH- 0
-
-
-
-
-
-
-
-
-
-
-
-
1994
XP
657X
270500196
270500195
BN-38I (SB)
MAIN-132.5 PILOT-75
1.5
16 - 21
LOW- 1-1/4 HIGH- 0
SHAFTS IN LINE
1995
XP
717
270500250
270500252
BN-38I (SB)
MAIN-135 PILOT-67.5
1.2
40 - 56
LOW- 1-3/4 HIGH- 0
-
1995
HX
717
270500250
270500252
BN-38I (SB)
MAIN-135 PILOT-67.5
1.2
40 - 56
LOW- 1-3/4 HIGH- 0
-
1995
GTX
657X
270500259
270500258
BN-38I (SB)
MAIN-132.5 PILOT-75
1.5
19 - 35
LOW- 1-1/4 HIGH- 1/4
SHAFTS IN LINE
1995
SPX
657X
270500262
270500261
BN-38I (SB)
MAIN-135 PILOT-72.5
2.0
22 - 37
LOW- 1-1/8 HIGH- 0
SHAFTS IN LINE
1996
SPX
717
270500278
270500279
BN-38I (SB)
MAIN-130 PILOT-67.5
1.2
36 - 60
LOW- 1-1/4 HIGH- 0
-
1996
GTI
717
270500278
270500279
BN-38I (SB)
MAIN-130 PILOT-67.5
1.2
36 - 60
LOW- 1-1/4 HIGH- 0
-
1996
HX
717
270500280
270500281
BN-38I (SB)
MAIN-130 PILOT-75
1.2
36 - 60
LOW- 1-1/2 HIGH- 0
-
1997
HX
717
270500280
270500281
BN-38I (SB)
MAIN-130 PILOT-75
1.2
36 - 60
LOW- 1-1/2 HIGH- 0
-
-
-
-
-
-
-
-
-
-
-
-
1995
XP800
787
270500215
270500216
BN-40I (SB)
MAIN-147.5 PILOT-60
1.5
40 - 56
LOW- 1 HIGH- 0
-
1996
XP
787
270500284
270500285
BN-40I (SB)
MAIN-142.5 PILOT-70
1.5
23 - 43
LOW- 1 HIGH- 0
-
1996
GSX
787
270500284
270500285
BN-40I (SB)
MAIN-142.5 PILOT-70
1.5
23 - 43
LOW- 1 HIGH- 0
-
1996
GTX
787
270500284
270500285
BN-40I (SB)
MAIN-142.5 PILOT-70
1.5
23 - 43
LOW- 1 HIGH- 0
-
1997
SPX
787
270500284
270500285
BN-40I (SB)
MAIN-142.5 PILOT-70
1.5
23 - 43
LOW- 1 HIGH- (MAG-0 PTO-1/2)
-
1997
GSX
787
270500284
270500285
BN-40I (SB)
MAIN-142.5 PILOT-70
1.5
23 - 43
LOW- 1 HIGH- (MAG-0 PTO-1/2)
-
1997
GTX
787
270500284
270500285
BN-40I (SB)
MAIN-142.5 PILOT-70
1.5
23 - 43
LOW- 1 HIGH- (MAG-0 PTO-1/2)
-
1997
GS
717
270500297
N/A
BN-40I (SB)
MAIN-175 PILOT-67.5
1.5
23 - 43
LOW- 1 HIGH- 1-1/2
-
1997
GSI
717
270500297
N/A
BN-40I (SB)
MAIN-175 PILOT-67.5
1.5
23 - 43
LOW- 1 HIGH- 1-1/2
-
1997
GTS
717
270500297
N/A
BN-40I (SB)
MAIN-175 PILOT-67.5
1.5
23 - 43
LOW- 1 HIGH- 1-1/2
-
1997
GTI
717
270500297
N/A
BN-40I (SB)
MAIN-175 PILOT-67.5
1.5
23 - 43
LOW- 1 HIGH- 1-1/2
-
1997
XP
787
270500333
270500329
BN-40I (SB)
MAIN-(MAG - 142.5 PTO - 147.5) PILOT-65
1.5
28 - 48
LOW- 1-3/4 HIGH- 0
ACCEL PUMP ON PTO CARB
-
-
-
-
-
-
-
-
-
-
-
1998
SPX
787
270500326
270500327
BN-40I-38
MAIN-(MAG - 140 PTO - 142.5) PILOT-67.5
1.5
36 - 40
LOW- 1-1/2 HIGH- 0
ACCEL PUMP ON PTO CARB
1998
GS
717
270500328
N/A
BN-40I-38
MAIN-167.5 PILOT-70
1.5
36 - 40
LOW- 1-1/4 HIGH- 0
ACCELERATOR PUMP
1998
GTS
717
270500328
N/A
BN-40I-38
MAIN-167.5 PILOT-70
1.5
36 - 40
LOW- 1-1/4 HIGH- 0
ACCELERATOR PUMP
1998
GTI
717
270500328
N/A
BN-40I-38
MAIN-167.5 PILOT-70
1.5
36 - 40
LOW- 1-1/4 HIGH- 0
ACCELERATOR PUMP
1999
SPX
787
270500418
270500419
BN-40I-38
MAIN-(MAG - 140 PTO - 142.5) PILOT-67.5
1.5
36 - 40
LOW- 1-1/2 HIGH- 0
ACCEL PUMP ON PTO CARB
1999
GS
717
270500420
N/A
BN-40I-38
MAIN-167.5 PILOT-75
2.0
36 - 40
LOW- 1 HIGH- 0
ACCELERATOR PUMP
1999
GTS
717
270500420
N/A
BN-40I-38
MAIN-167.5 PILOT-75
2.0
36 - 40
LOW- 1 HIGH- 0
ACCELERATOR PUMP
1999
GTI
717
270500420
N/A
BN-40I-38
MAIN-167.5 PILOT-75
2.0
36 - 40
LOW- 1 HIGH- 0
ACCELERATOR PUMP
-
-
-
-
-
-
-
-
-
-
-
1998
GSX LTD (5625)
947
270500292
270500291
BN-46I-42
MAIN-(MAG - 160 PTO - 162.5) PILOT-80
1.8
42 - 47
LOW- 1-3/4 HIGH- 0
ACCEL PUMP ON PTO CARB
1998
GSX LTD
947
270500331
270500332
BN-46I-42
MAIN-160 PILOT-80
2.0
19 - 23
LOW- 1-1/4 HIGH- (MAG-0 PTO-1/4)
ACCEL PUMP ON PTO CARB
1998
GTX LTD
947
270500331
270500332
BN-46I-42
MAIN-160 PILOT-80
2.0
19 - 23
LOW- 1-1/4 HIGH- (MAG-0 PTO-1/4)
ACCEL PUMP ON PTO CARB
1998
XP LTD
947
270500331
270500332
BN-46I-42
MAIN-160 PILOT-80
2.0
20 - 24
LOW- 1-1/4 HIGH- (MAG-0 PTO-1/4)
ACCEL PUMP ON PTO CARB
1999
GSX LTD
947
270500416
270500417
BN-46I-42
MAIN-162.5 PILOT-75
2.0
19 - 23
LOW- 1-1/2 HIGH- 0
ACCEL PUMP ON PTO CARB
1999
GTX LTD
947
270500416
270500417
BN-46I-42
MAIN-162.5 PILOT-75
2.0
19 - 23
LOW- 1-1/2 HIGH- 0
ACCEL PUMP ON PTO CARB
1999
XP LTD
947
270500416
270500417
BN-46I-42
MAIN-162.5 PILOT-75
2.0
19 - 23
LOW- 1-1/2 HIGH- 0
ACCEL PUMP ON PTO CARB

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