100
INTAKE
SYSTEMS
FOUR
STROKE
ENGINE/
GASKETS
EXHAUST
DRIVE LINE
HANDLING
ELECTRICAL
WATERLINE
/BILGE
STEERING
& CONTROLS
BODY
ACCESSORIES
SERVICE TOOLS
/HARDWARE
CHEMICAL
Diagram
No.
1.
1a.
2.
3.
4.
5.
5a.
6.
6a.
7.
8.
9.
10.
11.
12.
13.
13a.
13b.
14.
15.
16.
17.
18.
19a.
20.
20a.
21.
22.
22a.
24.
25.
26.
27.
28.
29a.
29b.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
Mikuni
Description
Part No.
Gasket Pump (2) . . . . . . . . . . . . . . . . . . . . . . . . . .BN38/547
O-Ring* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .616-72001
Diaphragm, Pump (Clear) . . . . . . . . . . . . . . . . . . . .BN34/97
Check Valve (2) (Clear) . . . . . . . . . . . . . . . . . . . . .BN34/124
Grommet, Check Valve (2) . . . . . . . . . . . . . . . . . . .BN34/125
Diaphragm, Damper (large hole)** . . . . . . . . . . . . .BN34/100
Diaphragm, Damper (small hole)* . . . . . . . . . . . . .BN34/129
Gasket, Damper** . . . . . . . . . . . . . . . . . . . . . . . . . .BN34/101
O-Ring* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .616-92007
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BN44/146
O-Ring, Hi Speed . . . . . . . . . . . . . . . . . . . . . . . . . .B30/305
O-Ring, Low Speed . . . . . . . . . . . . . . . . . . . . . . . .MD12/16
O-Ring, Needle Valve . . . . . . . . . . . . . . . . . . . . . . .KV/10
Gasket Valve Body . . . . . . . . . . . . . . . . . . . . . . . . .BN34/123
Check Valve (Clear) (10 pieces/pack) . . . . . . . . . .BN34/107-10PK
Spring, Arm (115 grams) . . . . . . . . . . . . . . . . . . .see pg 102
Spring, Arm (65 grams) . . . . . . . . . . . . . . . . . . . .see pg 102
Spring, Arm (95 grams) . . . . . . . . . . . . . . . . . . . .see pg 102
Pin, Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .VM30/97
Arm (Stainless) . . . . . . . . . . . . . . . . . . . . . . . . . . . .BN38/534
Diaphragm Assembly . . . . . . . . . . . . . . . . . . . . . . .BN44/145
Screw with 2 Washers, Stainless - 30mm (4 pcs) . . .BN34/120-30
Cover Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Body Assembly Pump (Must use w/O-Ring 1A) . . .BN34/128
Stop Screw, Idle** . . . . . . . . . . . . . . . . . . . . . . . . . .BN44/109
Stop Screw, Idle* . . . . . . . . . . . . . . . . . . . . . . . . . .BN34/82
Washer (Aluminum - Same as #26) . . . . . . . . . . . .BN38/39
Spring, Idle** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BN38/341
Spring, Idle (Same as #25)* . . . . . . . . . . . . . . . . . .BN38/344
Adjuster, Hi Speed (with Cross Bar) . . . . . . . . . . . .BN44/167
Spring, Hi Speed (Same as #22a) . . . . . . . . . . . . .BN38/344
Washer, Hi Speed (Aluminum - Same as #21) . . .BN38/39
Washer, Low Speed (Aluminum) . . . . . . . . . . . . . .BN38/172
Spring, Low Speed . . . . . . . . . . . . . . . . . . . . . . . . .BN38/343
Adjuster, Low Speed (with Cross Bar) 38mm . . . .BN38/477
Adjuster, Low Speed (with Cross Bar) 44mm . . . .BN38/166
Plate, N.V. Retainer . . . . . . . . . . . . . . . . . . . . . . . .BN34/117-GG
Screw with washer . . . . . . . . . . . . . . . . . . . . . . . . .CW2=0307-G
Low Jet, 30-160 in increments of 5 (See page 102) N100.606-SIZE
Main Jet, 30-240 in increments of 5 (See page 102) N102.221-SIZE
Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BV15/121-05-GG
Plate, Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BN34/108-GG
Valve Body Assembly . . . . . . . . . . . . . . . . . . . . . . .BN44/165
Screw (2 pcs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C5=0414-G
Screw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C6=0308-K
Cover (Stainless) . . . . . . . . . . . . . . . . . . . . . . . . . .BN44/147
a
Early S/BN 44
MIKUNI GENUINE PARTS
SUPER BN38 / BN44 / BN46
(Not used on BN38)
b
*Super BN38 and Late Super BN44
**Early Super BN44
* Super BN38 and
Late Super BN44
** Early Super BN44
SUPER BN CARBURETOR
TUNING MANUAL
For the watercraft tuner working with
Super BN series carburetors.
Description
Part No.
Mikuni Tuning Manual
MK-BN/004
(Discontinued)
19 is early
S/BN 44/46 only
For Late S/BN 44/46 use #19A & #1A
Needle and Seat
See Page 102
©2017 Hot Products. All rights reserved.
Orders & Info: 858-453-4454 • HotProductsUSA.com
MK-BN38/44 SPR REBUILD KIT
10
13
GENUINE COMPONENTS
GENUINE COMPONENTS
Pump Cover
BN34-95B........No Paint
999-642-002-1A ...Black
999-642-002-1B ...Silver
17
