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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!

YS Parts Menu

YS Parts Catalogue

982 products

Showing 361 - 396 of 982 products

Showing 361 - 396 of 982 products
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YS Engines and Parts
YS Engines #F3168A 63S REGULATOR ASSEMBLY
$60.45
Only 4 units left
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#F3169 63S REGULATOR ADJ SCREW O-RINGYS Engines and Parts
YS Engines #F3169 63S REGULATOR ADJ SCREW O-RING
$4.35
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#F3124 63S PISTONYS Engines and Parts
YS Engines #F3124 63S PISTON
$47.25
Only 2 units left
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#F7102A 110 CYLINDER HEAD ASSEMBLYYS Engines and Parts
YS Engines #F7102A 110 CYLINDER HEAD ASSEMBLY
$153.95
Only 1 unit left
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#S5107 91H PISTON RINGYS Engines and Parts
YS Engines #S5107 91H PISTON RING
$29.65
Only 2 units left
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YS Engines and Parts
YS Engines #F2030 140DZ DISC VALVE PIN
$13.15
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YS Engines and Parts
YS Engines #F2192 140DZ INSULATOR GASKET
$3.85
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YS Engines and Parts
YS Engines #F2059 140DZ FUEL PUMP STAY SET
$7.65
In stock, 8 units
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#F2187 140DZ FUEL PUMP INSULATORYS Engines and Parts
YS Engines #F2187 140DZ FUEL PUMP INSULATOR
$10.95
In stock, 9 units
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YS Engines and Parts
YS Engines #F2186 140DZ FUEL PUMP PLUNGER
$9.85
Only 5 units left
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#F2041 140DZ PUSH ROD COVERYS Engines and Parts
YS Engines #F2041 140DZ PUSH ROD COVER
$10.75
Only 5 units left
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YS Engines and Parts
YS Engines #F2132 140DZ INSULATOR
$29.50
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YS Engines and Parts
YS Engines #F2029 140DZ DISC VALVE
$34.15
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#F2128 140DZ BACK PLATEYS Engines and Parts
YS Engines #F2128 140DZ BACK PLATE
$54.95
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#S4125 80 NEEDLE VALVEYS Engines and Parts
YS Engines #S4125 80 NEEDLE VALVE
$18.45
Only 3 units left
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#S4125S 80 NEEDLE VALVE ASSEMBLYYS Engines and Parts
YS Engines #S4125S 80 NEEDLE VALVE ASSEMBLY
$36.25
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YS Engines and Parts
YS Engines #F6116 63 CRANKSHAFT
$71.45
Only 1 unit left
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YS Engines and Parts
YS Engines #S8138A ST2 REGULATOR ASSEMBLY
$69.25
Only 5 units left
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#F5175 53FZ HEADER LOCK NUTYS Engines and Parts
YS Engines #F5175 53FZ HEADER LOCK NUT
$8.55
Only 3 units left
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#F5142 53FZ PUSH ROD COVER O RINGYS Engines and Parts
YS Engines #F5142 53FZ PUSH ROD COVER O RING
$6.05
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#F5134 53FZ CAM GEARYS Engines and Parts
YS Engines #F5134 53FZ CAM GEAR
$52.75
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#F5115 53FZ INTAKE PIPE O RINGYS Engines and Parts
YS Engines #F5115 53FZ INTAKE PIPE O RING
$3.85
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#F5106 53FZ VALVE SPRING RETAINER SETYS Engines and Parts
YS Engines #F5106 53FZ VALVE SPRING RETAINER SET
$6.33
Only 3 units left
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YS Engines and Parts
YS Engines #F5104 53FZ EXHAUST VALVE
$21.95
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YS Engines and Parts
YS Engines #F1506A 140FZ HEAD ASSEMBLY
$159.45
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YS Engines and Parts
YS Engines #F1521 140FZ PISTON
$86.35
Only 2 units left
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YS Engines and Parts
YS Engines #F1506 140FZ CYLINDER HEAD
$114.45
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YS Engines and Parts
YS Engines #F1432 120SC CAM GEAR COVER
$7.65
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#F1429 120SC RETAINER SCREWYS Engines and Parts
YS Engines #F1429 120SC RETAINER SCREW
$5.85
In stock, 8 units
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YS Engines and Parts
YS Engines #F1411 120SC VALVE SPRING CLIP
$11.95
In stock, 7 units
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#F9166A 91AC REGULATOR ASSEMBLYYS Engines and Parts
YS Engines #F9166A 91AC REGULATOR ASSEMBLY
$57.15
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#F9153 91AC BACK PLATE SCREWSYS Engines and Parts
YS Engines #F9153 91AC BACK PLATE SCREWS
$6.55
In stock, 9 units
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#F9151 91AC DISK VALVE PIN E RINGYS Engines and Parts
YS Engines #F9151 91AC DISK VALVE PIN E RING
$2.75
In stock, 21 units
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YS Engines and Parts
YS Engines #F1229 91AC DISK VALVE PIN RETAINER
$3.25
Only 1 unit left
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#F9139 91AC CAM COVER O RINGYS Engines and Parts
YS Engines #F9139 91AC CAM COVER O RING
$2.75
Only 1 unit left
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YS Engines and Parts
YS Engines #F9129 91AC WRIST PIN
$10.95
Only 5 units left

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