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SR500 Fuel System

Fuel System

The balance between air flow and fueling in an SR500 is delicate, and it doesn’t take much to upset it. But an SR500 carburetor rebuild kit, properly installed, can get your vintage Yamaha thumper back operating at peak level. To finish restoring your SR500 fuel system, install one of our petcock repair kits. They contain the diaphragm and all the O-rings and gaskets you need to restore the proper vacuum to your SR500 fuel flow. Mikes XS also stocks Mikuni carb tuning manuals and pocket tuners, so you can set your SR500 air-fuel mixture properly.

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  1. Fuel Line clear 1/8" ID 1/4" OD
    Part #
    200-1800-1
    Motion Pro Clear Fuel Line - 1/8" Internal Diameter- 1/4" Outside Diameter. Priced per foot - can be used for float bowl overflow hose. carb sync gauge hose 
  2. Fuel Line clear 1/8" ID 1/4" OD
    Part #
    200-1800
    Motion Pro Clear Fuel Line - 1/8" Internal Diameter- 1/4" Outside Diameter. 25 foot Roll.  This hose can be used for float bowl overflow hose, carb sync gauge hose or petcock vacuum hose. 
  3. Auxiliary Gas Tank
    Part #
    TU03-1500
    This impact resistant- graduated tank takes the place of the original gas tank while performing carb synchronizing. Includes four feet of 1/4" fuel line and brass petcock. Thanksgiving: @12Thanks^%$1 Suggestion: look for a used hospital or doctors office IV stand.  These come with 4 or 5 wheels on a weighte... 
  4. Fuel Petcock Repair Kit 1978 XS650 and more
    Part #
    20-0101
    Kit contains o rings and diaphragms to rebuild one fuel petcock. Does not include plastic diaphragm spacer block.Yamaha XS650 E 78XS360 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 
  5. Manual - Tuning Manual For Mikuni Motorcycle Carburetors
    Part #
    35-0665
    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-yourself type. For Mikuni Pock... 
  6. Mikuni Pocket Tuner
    Part #
    48-8106
    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 r... 
  7. Carb Holder Yamaha SR500 1978-1981 TT500 XT500
    Part #
    41-4850
    Carburetor Holder SR500 E/F/G/H 1978-81. Replace your worn and cracked carb holders. Includes one carb holder and one intake gasket.Also fits: TT500 C/D/E/F/G/H 1976-81, XS500 1976-81, XT500 C/D/E/F/G/H 1976-81 
  8. Carburetor Kit - SR250 - 1980-1982 - Premium
    Part #
    200-1116
    The ultimate carb rebuild kit from Keyster.  For Yamaha SR250 1980-1982.  One (1) kit is required. These kits contain parts not normally available - and help solve rough running issues related to these SR250 carbs. Included in the kit are: 4 x different Jet Needles - Lean, Standard (5GP26), Rich, Richer... 
  9. Float Bowl Gasket Yamaha SR500
    Part #
    41-4820
    Float Bowl Gasket. SR500. Sold each. 
  10. Mikuni Needle Valve filter
    Part #
    SU002-606
    OEM: 1J7-14994-00-00 13376-19F00 14043-1010 VM18/233 Genuine Mikuni Part. Fits: 29mm and 33mm Mikuni smoothbore carbs - VM29 & VM33 RS34 Flatslide carbs Yamaha XS360 1976-1977 XS400 1977-1983 XS500 1978 XS650 1978-1983 XS750 1978-1979 XS1100 1978-1981 SR250 1980-1982 XJ550 1981-1983 XJ650 1982-1... 
  11. Carburetor Kit - SR500 - 1978-1979 - Premium
    Part #
    200-1117
    The ultimate carb rebuild kit from Keyster.  For Yamaha SR500 (1978-1979).  One (1) kit is required. These kits contain parts not normally available - and help solve rough running issues related to these SR500 carbs. Included in the kit are: 4 x different Jet Needles - Lean, Standard (6FL25), Rich, Riche... 
  12. Carburetor Kit- SR500 - 1978-1981 - Intermediate
    Part #
    41-4800
    Carburetor Repair Kit. SR500 
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