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Yamaha Motorcycle BS34 38 CV Mikuni Carb Slides, Carb Top Parts, Throttle Butterfly Parts

BS34 38 CV Mikuni Carb Slides, Carb Top Parts, Throttle Butterfly Parts

When the diaphragm on a carburetor slid deteriorates, performance issues quickly follow. Unfortunately, replacement is the only solution. Mikes XS carries Yamaha motorcycle carb slide and diaphragm assemblies for Mikuni BS34 and BS38 carbs to cure this uncommon problem. We also offer hard-to-find carb replacement parts like the Mikuni BS34 butterfly shaft seal, carb lid screws, slide needle preload springs, float needles and Dyno Kit performance jet needles. 

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  1. Seal - Throttle Butterfly Shaft - XS650 1970-1984
    Part #
    48-5021
    Throttle Butterfly Shaft Seal - Pk/2 Fits: Stock Mikuni BS34/BS38 CV Carburetors on all 1970-84 650's. 
  2. Slide and Diaphragm Assembly - XS650 1980-1984 - XS500
    Part #
    20-6028
    Carb Slide & Diaphragm Assembly. - Fits: Mikuni BS34 CV Carbs as used on 1980-84 XS650's OEM Ref.# 3F7/3H5-14940 - Mikuni GenuineAlso fits: SR250 Exciter 80-82, XS400 SE 82, XS400 G 80, XS400 H 81, XS400 SH/SJ 81-82, XS400 J 82, XS400 K Maxim 83, XJ900 RK Seca 83, XJ1100 Maxim 82, XS1100 G/H/LG/LG/SG/SH 80-81 
  3. Slide and Diaphragm Assembly - XS650 1970-1977 - XS500
    Part #
    20-6029
    Carb Slide & Diaphragm Assembly. - Fits: Mikuni BS38 CV Carbs as used on 1970-77 XS650 TX 650's OEM Ref.# 256-14940-00 - Mikuni GenuineAlso fits: XS500 C/D 76-77, TX650 73-74 
  4. Screw Set - Carburetor Top - 5mm x 12mm - Pkg 4
    Part #
    48-0992
    Screws - 5mm.(no lock washers) Late Mikuni CV carb Lid Screw - Pk./4 
  5. Screw Set - Carburetor Top - 5mm x 12mm - Pkg 4
    Part #
    48-0991
    Screws - 5mm.- Early Mikuni BS38 CV carb Lid Screws with lockwashers and Late 34mm CV Bowl Screw Pk./4 
  6. Screws - Throttle Shaft - XS650 XS400 - Pkg 4
    Part #
    48-5022
    Throttle Butterfly Shaft Screws (Pk./4)Fits: Stock Mikuni BS34/BS38 CV Carbs. All OEM XS1/XS2/XS650/TX650 carbs XS400 
  7. Float Needle - SR500 - XT500
    Part #
    41-4806
    Float Needle SR500 1978-81Also fits: XT500 1978-81 
  8. Preload Spring - Slide Needle - XS650 1980-1984
    Part #
    48-0669
    Spring - Slide needle preload spring for stock BS34 CV Mikuni carbs as used on 1980-84 North American model XS650's. OEM Ref.# 3F7-14589-00-00This spring holds the slide needle down in place in the carb slide. 
  9. Jet Needle - 7F6 - XS650 1980-1984
    Part #
    48-0664
    Jet Needle - Dyno Kit 
  10. Washer - Jet Needle - XS650 1980-1984
    Part #
    48-0770
    Slide Needle WasherWasher - Fits under slide needle preload spring and on top of needle & clip on stock BS34 CV Mikuni carbs as used on 1980-84 North American model XS650's. 
  11. Clip - Slide Needle - Carburetor - XS650 1974-1984
    Part #
    48-0668
    Carb Slide Needle Clip (pk./2) - Fits: Slide Needles on 1974-84 650's with stock Mikuni BS34/38 CV Carbs. 
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