Page 25 - Mikuni Carburetor Catalog 21

Accessories
SUPER BN NEEDLE VALVE KITS
• MK-BN38NV Needle valve replacement kit for Super BN38, contains a 2.0 needle valve and 115 gram spring with approx. 32 lbs. pop off and an 80 gram spring for 21 lbs. pop-off.
Instructions included.
• MK-BN44 NV 1 Needle valve replacement kit for Super BN 44, contains a Viton 2.3 nee- dle valve and 65 gram
spring for 15 lbs. pop-off. Instructions included.
• MK-BN44 NV 2 Needle
valve replacement kit for
High Performance Super
BN 44 and 46, contains
a 2.5 needle valve and
80 gram spring for 14 lbs. pop- off. Instructions included.
BN / SBN / BNI CARB REBUILD KITS
All parts needed to rebuild your Super BN carb (Does
not include needle valve, see needle valve part numbers). Exploded views of Rebuild Kits found on pages 26-28.
• MK-BN38/44 SPR 38/44/46mm rectangle pump body carb,
and for 38/40mm “I” type.
• MK-BN46I 46mm “I” type.
• MK-BN38/44 -38/44mm early
style round body carb.
• MK-BN44I-YAMYamahaG.P.PWC
COUPLING KITS
• MK-BN/001 Allows two carbs to be connected for dual carb setups.
THROTTLE SHAFT REBUILD KITS
• MK-BN/038 TV for SBN 38MM
• MK-BN/044 TV for SBN 44MM
• MK-BN/046 TV for SBN 46MM
Kit includes butterfly valve, shaft, seals, screws, instructions.
SUPER BN OWNERS MANUAL
• MK-BN/004 Provides details on carb tuning and service.
BN POP OFF PUMP
• MK-BN PMP 30 lb. gauge gives accurate pop-off pressure readings. Our high pressure pump is durable and easy to use. This pump is a must for tuning your BN carb
• MK-BN PMP 60 60 lb. gauge and pump.
• MK-BN PMP 100 100 lb. gauge and pump allow for readings on many stock carbs with small needle valves and strong springs.
UNIVERSAL JET BOXES
• MK-BN/053 36 Compartment Plastic Jet Box • KHS-02416 Compartment Plastic Jet Box
TUNING COMPONENTS FOR SUPER BN
Pilot (slow speed) Jets
N100.606-Sizes 50 through 150 in increments of 2.5.
Main (high speed) Jets
N102.221-Sizes 50 through 200 in increments of 2.5.
Needle Valve Assembly (solid needle, Viton)
786-35015-Sizes 1.5, 2.0, 2.3 and 2.5.
Needle Valve Arm Springs are available in different spring rates to vary your pop-off pressure.
SUPERBN CARBURETORS
WATERCRAFT CARBURETOR Owner’s Manual Revised 3/96
25
Part Number
730-03030 730-03033 730-03027-T 730-03027
Rate
65 grams 80 grams 95 grams 115 grams
Color
Shiny Silver Black
Dull Silver Platinum
Length
14.6mm 14.6mm 15.7mm 16.7mm