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All available documentation is provided below for your reference

If the part you need is not in stock, please go to the product page and click "Email me when available" to get a notification when it's back in stock. This helps us determine what to order with the factory!

If you have a digital copy of a YS manual, please send it to us and help build the best collection of YS information on the web. Thank you!

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Pump, Regulator, and Fuel Components

185 products

Showing 145 - 180 of 185 products

Showing 145 - 180 of 185 products
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#S2051 56SR HIGH NEEDLE O RINGYS Engines and Parts
YS Engines #S2051 56SR HIGH NEEDLE O RING
$4.35
Only 2 units left
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#S2048 56SR HIGH NEEDLEYS Engines and Parts
YS Engines #S2048 56SR HIGH NEEDLE
$15.35
Only 1 unit left
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YS Engines and Parts
YS Engines #E1275 170DZ CDI SUB NEEDLE O-RING
$4.35
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#E1274 170DZ CDI SUB NEEDLEYS Engines and Parts
YS Engines #E1274 170DZ CDI SUB NEEDLE
$21.95
Only 3 units left
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#F7374 FZ110S REGULATOR BODY BYS Engines and Parts
YS Engines #F7374 FZ110S REGULATOR BODY B
$21.95
Only 2 units left
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YS Engines and Parts
YS Engines #F7368A FZ110S REGULATOR ASSEMBLY
$62.65
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YS Engines and Parts
YS Engines #S1042 50ST REGULATOR SCREW
$8.75
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#S1037 50ST REGULATOR BODY BYS Engines and Parts
YS Engines #S1037 50ST REGULATOR BODY B
$36.25
Only 2 units left
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YS Engines and Parts
YS Engines #S1036 50ST REGULATOR BODY A1
$38.45
Only 4 units left
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#S1029 50ST NEEDLE SOCKETYS Engines and Parts
YS Engines #S1029 50ST NEEDLE SOCKET
$12.05
Only 1 unit left
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#S1027 50ST NEEDLE VALVEYS Engines and Parts
YS Engines #S1027 50ST NEEDLE VALVE
$15.35
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#F3175 63S REGULATOR BRACKET SETYS Engines and Parts
YS Engines #F3175 63S REGULATOR BRACKET SET
$7.65
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#F3174 63S REGULATOR BODY BYS Engines and Parts
YS Engines #F3174 63S REGULATOR BODY B
$19.75
Only 4 units left
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YS Engines and Parts
YS Engines #F3172 63S REGULATOR BODY A
$21.95
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#F3168 63S REGULATOR ADJ SCREWYS Engines and Parts
YS Engines #F3168 63S REGULATOR ADJ SCREW
$6.55
Only 2 units left
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#S5131 91H LOW SPEED NEEDLEYS Engines and Parts
YS Engines #S5131 91H LOW SPEED NEEDLE
$16.50
Only 1 unit left
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#F2052 140DZ REGULATOR SCREW SETYS Engines and Parts
YS Engines #F2052 140DZ REGULATOR SCREW SET
$4.85
In stock, 20 units
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YS Engines and Parts
YS Engines #F2047 140DZ REGULATOR BODY
$36.25
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YS Engines and Parts
YS Engines #S8130 ST2 HIGH SPEED NEEDLE
$15.35
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#S8132 ST2 LOW SPEED NEEDLEYS Engines and Parts
YS Engines #S8132 ST2 LOW SPEED NEEDLE
$16.45
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#F5172 53FZ REGULATOR SCREWSYS Engines and Parts
YS Engines #F5172 53FZ REGULATOR SCREWS
$7.85
In stock, 7 units
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YS Engines and Parts
YS Engines #F5171 53FZ REGULATOR SPRING
$5.45
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#F5166 53FZ REGULATOR BODYYS Engines and Parts
YS Engines #F5166 53FZ REGULATOR BODY
$43.95
Only 1 unit left
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YS Engines and Parts
YS Engines #F5158 53FZ NEEDLE VALVE
$17.55
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YS Engines and Parts
YS Engines #F1556 140FZ NEEDLE SEAT O RING
$4.35
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#F1555 140FZ NEEDLE SEATYS Engines and Parts
YS Engines #F1555 140FZ NEEDLE SEAT
$13.15
Only 2 units left
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YS Engines and Parts
YS Engines #S7135 61ST-H REGULATOR SUB PLATE
$20.63
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YS Engines and Parts
YS Engines #S7135S 61ST REGULATOR ASSEMBLY
$56.65
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YS Engines and Parts
YS Engines #S7134 61ST REGULATOR SUB PLATE
$13.15
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YS Engines and Parts
YS Engines #F1496 120SC REGULATOR BALLAST
$4.68
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YS Engines and Parts
YS Engines #F9276 91ACH REGULATOR PLATE
$20.85
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YS Engines and Parts
YS Engines #F9171 91ACH REGULATOR SCREW
$6.55
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YS Engines and Parts
YS Engines #F9156 91AC LOW SPEED NEEDLE
$12.05
Only 3 units left
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#F9166 91AC REGULATOR BODYYS Engines and Parts
YS Engines #F9166 91AC REGULATOR BODY
$43.95
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#R6140 61LS REGULATOR MOUNTING SCREWYS Engines and Parts
YS Engines #R6140 61LS REGULATOR MOUNTING SCREW
$3.85
Only 2 units left
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YS Engines and Parts
YS Engines #R6137 61LS REGULATOR SCREW
$3.25
Only 2 units left

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