Fuel System

Mikuni Pocket Tuner

Mikuni Pocket Tuner. A handy pocket-size calculator which can be used to determine required jetting changes in Mikuni carburetors due to climate and temperature changes. The Pocket Tuner is applicable to both single and multi-carb applications on two-stroke and four-stroke engines. It also has a guide for determining rich or lean carburetor conditions.

For Mikuni Tuning Manual see 35-0665.
Part #48-8106
$8.95 USD Ea.
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Mikuni Tuning Manual for motorcycle carburetors

Mikuni carburetor Tuning Manual from Sudco. 92 page manual includes exploded parts views, parts listings and optional parts. Guides you through tuning and trouble shooting for the popular lines of Mikuni carburetors. The definite reference for Mikuni carburetors and a must for the do-it-yourselfer.

For Mikuni Pocket Tuner, see 48-8106.
Part #35-0665
$14.50 USD Ea.
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Extended Throttle Cable

Extended Throttle Cable - (Black) Throttle - Same as Throttle Cable
#51-3502 but + 350mm. (13.75") in length.

Fits: Custom High bar applications for XS650's (1976-84). Great for many custom applications for many bikes.
Can be used with XS400.
Part #51-9502
$19.95 USD Ea.
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Gasket - Float Bowl Mikuni BS38 CV carburetors

Gasket - Float Bowl - Fits: 1970-79 XS/TX650 Stock 38mm. Mikuni CV Carbs. XS1/XS1B/XS2 70-72.
OEM Ref.# 256-14984-00

Also fits: XS360 C/D/2D 76-77, XS500 C/D 76-77, TX650 A 73-74, TX750 A 73-74. XS750 D/2D 77


OEM Reference #
• 256-14984-00

Part #20-7029
$4.95 USD Ea.
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Carb Holder Spacers (set 2) 1978-84 XS650

Billet Aluminum Carburetor Spacers, 35.75mm thick. (Set/2) 35mm ID
Fits: To any XS650 Head and improves Low end power and
acceleration.

Dyno developed to provide maximum low RPM Torque with
Dellorto PHF 36.

Note: PHF 36 Carbs + Spacers + Pod filters fit to stock
space (head to battery box).


An essential component of the XS PWK 32 Flatside carburetor kit.

Fits: To any XS650 Head and improves low end power and acceleration.
Dyno developed to provide maximum low RPM Torque and optimum throttle
response on the XS PWK flatslide carb set. Requires removal of side covers on 70-77 bikes. Part 48-7501 is cut down to eliminate this requirement.

Can be used to adapt our Performance carb kit to the XS400.
Part #48-7500
$39.95 USD Set/2
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Brass Carb Float XS400 XS500 XS750 XS1100

This product is temporarily out of stock.
Carb Float . XS400 1977-79, XS500 1978, XS750 1978-79, XS1100 1978-79

Includes Float and pin


OEM Reference #
• 2A2-14985-00
• 537-14186-00

Part #40-4830
$24.00 USD Ea.
Out of Stock

Carb Repair Kit XS400 XS750 XS1100

Carburetor Repair Kit. XS360 - XS400 1979, XS750 E/F/SF/SE 1977-79, XS1100 /SE 1978-1979
Kit includes float needle assembly, chamber gasket and 1 brass O ring.

Note: Kit for 1 Carb.
Part #40-4805
$10.00 USD Kit
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Float Needle with clip Mikuni BS34 CV carbs

Float Needle with clip - Fits: XS650G-K 1980-84 Stock 34mm. Mikuni CV Carburetors
- Viton tipped Needle & clip Only!

Also fits: SR250 80-82, XS400 G/H Special II 80-81, XS400 SG/SH/SJ Special 80-82, XV750 88-95, XV1100 88-97, XS1100 80-81,
Part #48-5014
$5.50 USD Ea.
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Carb Holder Set XS400

Carburetor Holder Set with gaskets for stock XS400 1977-81.

Replaces hardened and cracked carb holders.

OEM reference numbers
2A2-13586-00-00 LH
2A2-13596-00-00 RH
1L9-13556-10-00 intake manifold gaskets


OEM Reference #
• 2A2-13586-00-00
• LH
• 2A2-13596-00-00
• RH

Part #40-4850
$48.00 USD Pair
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Plastic Carb Float Mikuni BS34 CV carburetors

Plastic Carb Float - Fits: 1980-84 XS650 Stock 34mm. Mikuni CV Carbs.
Also replaces Brass float used on early 1980 XS650 "Specials".
OEM Ref.# 3H5-14985-00
Includes Float and pin

Also fits:
XS400 J/K Maxim 82-83
XS400 RJ/RK SECA 82-83
XS1100 G 80-81


OEM Reference #
• 256-14919-00-00
• 3H5-14985-00

Part #20-6502
$22.50 USD Ea.
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Carb Slide & Diaphragm Assembly 1980-84 Mikuni BS34 CV carburetors

Carb Slide & Diaphragm Assembly. - Fits: Mikuni BS34 CV Carbs as used
on 1980-84 XS650's OEM Ref.# 3F7/3H5-14940 - Mikuni Genuine

Also 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


OEM Reference #
• 3F7-14940-00
• 3H5-14940-00

Part #20-6028
$97.00 USD Ea.
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Fuel Petcock Repair Kit 1979-83 XS650 and more

Kit contains o rings and diaphragms to rebuild one fuel petcock. Does not include plastic diaphragm spacer block.

Yamaha XS650 F, 2F, G, H, Special II, Heritage, 78-83.
XS400 E, F, 2F, G, H, 78-81, SG/SH Special 80-81
XJ700 N/NC/S Maxim 85-86
XS750 SE after frame 311211 78, XS750SF 79,
XS850 80-81
XJ900 83-85
XJ900R SECA 83

Kawasaki: KZ650 B3 79, KZ650 E1/F1 80, KZ650 H2?h3 CSR 82-83, KZ700 A1 84, KZ750 80-83, KZ1000 K1/K2 81-82, KZ1000 M1/M2 81-82, KZ1000 P1/P2 82-02, KZ1000 P24 05, KZ1100 82-85
Part #20-0100
$35.99 USD Pk
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Fuel Petcock Repair Kit 1978 XS650 and more

Kit contains o rings and diaphragms to rebuild one fuel petcock. Does not include plastic diaphragm spacer block.

Yamaha XS650 E 78

XS360 C, D, 2D 76-77
XS400 D 77
SR500 E/F/G/H 78-81
SR500 82-84, 88, 91-93
XS500 E 78
XS750 D/2D/E/F 77-79
XS1100 E/F/G/H 78-81
Part #20-0101
$38.10 USD Pk
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Carburetor Float Valve (Needle & Seat) Mikuni BS34 CV carbs

Carburetor Float Valve (Needle & Seat) - Push in type with O-Ring seal, needle & clip.
Fits: XS650G/H/SH/SJ/SK/SL (1980-84) stock Mikuni BS34 CV carburetors.

Also fits:
XS400 G/H Special 80-81, XS400 SG/SHSpecial 80-81, XS400 SG Heritage Special 82
XJ550 81-83
XS1100 G/H/LG/LH Midnight Special 80-81, SG/SH Special 80-81
XJ1100J Maxim 82
FJ600L/LC/N/NC 84-85


OEM Reference #
• 3L1-14190-20
• 25G-14107-20

Part #48-1445
$11.95 USD Ea.
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Float Needle XS360 XS400 XS650 XS750 XS1100 +

Float Needle

Fits: XS360 1976-77, XS400 1977-79, RD400 77 (OEM 1J7-14190-20-00), XT500 76-79 and 88, XS650 77-80, XS750 77-79, XS1100 78-79, RD250 LC 82, RD350 LC 82

Kawasaki: KZ1000 A1/A2 77-78, KZ900 A4-A5 76-77, KZ900 B1 LTD 76, KZ1000 Di Z1R 78, KZ1000 A3-A4 MKII 79-80, KZ1000 B1/B2 LTD 77-78, KZ1000 B3/B4 LTD 79-80, KZ1000 D3 Z1R 80, KZ1000 E1/E2 Shaft S 79-80

Suzuki: GS550 B/C/EC 77-78, GS550 N/EN/LN 79, GS750 B/C/EC 77-78, GS750 N/EN/LN 79, GS850 GN 79, GS1000 C/EC/N 78-79, GS1000 EN/LN/SN 79


OEM Reference #
• 1J7-14190-20

Part #40-4810
$10.75 USD Pk
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Gasket - Float Bowl 1980-84 stock BS34 Mikuni CV carburetors

Gasket - Float Bowl - Fits: 1980-84 XS650 Stock 34mm. Mikuni CV Carbs. XS650 SE/SF/SG 78-80.
Oem Ref.# 3F7-14984-00

Also fits: XS400 G/H/SH/SJ 80-82, XS1100 80-81, SR250 80-82, XS750.


OEM Reference #
• 3F7-14984-00

Part #20-5020
$4.95 USD Ea.
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Float Valve Gasket XS400 XS500 XS750 XS1100

Float Valve Gasket XS400 D/E/F 1977-79

Also fits: XS500 E 1978, XS750 1978-79, XS1100 1978-79


OEM Reference #
• 2A2-14984-01

Part #40-4815
$4.50 USD Ea.
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The name Yamaha and any other trade names or symbols belonging to each respective corporation are stated for reference purposes only. The products on this site are after market (not OEM) replacement parts and accessories only. We have no relationship to the listed companies.