Parts

List of YS engines Parts (Ordered by Part Number)

To order parts or service, please CALL us Monday – Friday between 9am – 5pm PST.

Part NumberPart DescriptionPrice (US Dollar)
YS010045FR LINER & PISTON SET$79.95
YS010545FR CRANKCASE$79.95
YS011045FS BACK PLATE GASKET$3.10
YS011545FS THROTTLE BODY$24.75
YS012045FS BACK PLATE$4.75
YS012545FS CRANKSHAFT$33.95
YS013045FS WRIST PIN$3.10
YS013545FS THROTTLE GASKET$3.10
YS014545FS GASKET SET$7.75
YS015045FS THROTTLE SET$69.50
YS015545FS CRANKCASE$79.95
YS016045FS THROTTLE BARREL$12.95
YS016545FS NEEDLE SOCKET$13.95
YS017045FS REGULATOR BODY$19.95
YS017545FS REGULATOR PLUNGER$3.10
YS0176120/140 REGULATOR PLUNGER..$3.10
YS0180120FS PLUNGER SPRING$1.50
YS018545FS CYLINDER HEAD SCREWS$3.10
YS019045FS NEEDLE VALVE SET$24.75
YS019545FS REGULATOR ADJUSTING SCREW$3.25
YS020045FS THROTTLE ARM/SCREW SET$5.50
YS020545FS BACK PLATE SCREWS$2.25
YS021045FS CYLINDER HEAD$18.75
YS021545FS CYLINDER HEAD GASKET$1.50
YS022045FS THROTTLE REG. MOUNT SCREWS$3.25
YS022545FS REAR BALL BEARING$16.95
YS023045FS LINER/PISTON$79.95
YS023545FS CON ROD$11.75
YS026560 REAR BEARING$21.95
YS037560FS THROTTLE ARM/SCREW SET$5.50
YS038060/45 THROTTLE BARREL RETAINER SCREW$2.50
YS038560/45 NEEDLE VALVE DETENT$3.10
YS039060/45 DRIVE WASHER SET$19.95
YS039560/45 THROTTLE STOP SCREW/SPRING SET$3.10
YS040060/45 PROP NUT$2.50
YS040560/45 CHECK VALVE$7.75
YS041060/45 DIAPHRAGM$3.10
YS041560/45 NEEDLE VALVE$7.75
YS042060/45 FUEL NIPPLE/WASHER SET$4.75
YS042560/45 PROP WASHER$2.50
YS043060/45 O RING SET$7.75
YS043560/45 WRIST PIN RETAINER$3.10
YS044060/45 FRONT BEARING$12.25
YS049060H PROP NUT$1.50
YS049545FS MUFFLER$26.95
YS0500120FS CRANKCASE$137.25
YS0505120FS VALVE COVER$14.75
YS0510120FS VALVE COVER GASKET$3.10
YS0515120FS VALVE COVER SCREW SET$1.50
YS0520120FS HEAD SHIM$2.50
YS0530120FS INTAKE VALVE$22.95
YS0535120FS EXHAUST VALVE$21.50
YS0540120FS VALVE SPRING SET$6.25
YS0545120FS SPRING RETAINER SET$6.25
YS0550120FS C RING SET$3.10
YS0555120FS ROCKER ARM SET$30.95
YS0560120FS TAPPET ADJUSTING SCREW$6.25
YS0565120FS TAPPET ADJUSTING LOCK NUT$3.10
YS0570120FS ROCKER ARM SHAFT$5.50
YS0575120FS ROCKER ARM SCREW$1.50
YS0580120FS E RING SET$2.50
YS0585120FS HEAD SCREWS$4.75
YS0591120FS CRANKSHAFT$90.25
YS0595120FS CYLINDER LINER$43.25
YS0600120FS PISTON$43.25
YS0605120FS WRIST PIN$8.50
YS0610120FS WRIST PIN RETAINER$3.10
YS0615120FS PISTON RING$18.50
YS0620120FS CONNECTING ROD$30.75
YS0623120FS BACK PLATE ASSEMBLY$83.75
YS0645120FS BACK PLATE GASKET$3.10
YS0650120FS BACK PLATE SCREWS$4.75
YS0655120FS CAM GEAR COVER$5.50
YS0660120FS CAM COVER O RING$1.50
YS0665120FS CAM COVER SCREW SET$1.50
YS0670120FS CAM GEAR$46.25
YS0675120FS CAM FOLLOWER$12.25
YS0680120FS PUSH ROD SET$13.95
YS0685120FS PUSH ROD COVER SET$7.75
YS0690120FS PUSH ROD COVER O RING$5.95
YS0695120FS FRONT BEARING$12.25
YS0700120FS REAR BEARING$17.75
YS0701120FS REAR BEARING-A$18.75
YS0705120FS CAM GEAR BEARING SET$12.95
YS0710120FS FUEL NIPPLE SET$9.25
YS0715120FS REGULATOR BODY$33.95
YS0725120FS REGULATOR O RING$1.50
YS0730120FS DIAPHRAGM$3.10
YS0745120FS REGULATOR GASKET$1.50
YS0750120FS REGULATOR SCREW SET$1.50
YS0755120FS CARBURETOR BODY$52.50
YS0760120FS THROTTLE BARREL$30.95
YS0775120FS NEEDLE SOCKET O RING$3.10
YS0785120FS THROTTLE STOP SCREW$1.50
YS0790120FS THROTTLE STOP SPRING$1.50
YS0810120FS CARBURETOR GASKET$3.10
YS0815120FS DRIVE WASHER$19.95
YS0820120FS SHAFT KEY$3.10
YS0825120FS PROPELLER WASHER$4.75
YS0830120FS PROPELLER NUT SET$7.75
YS0835120FS INTAKE PIPE$12.25
YS0840120FS INTAKE PIPE O RING$4.75
YS0845120FS EXHAUST PIPE$12.25
YS0850120FS EXHAUST PIPE LOCK NUT$6.20
YS0855120FS VALVE COVER ASSEMBLY$17.75
YS0860120FS ROCKER ARM ASSEMBLY$40.25
YS0865120FS CAM GEAR COVER ASSEMBLY$8.50
YS0870120FS CARBURETOR ASSEMBLY$146.50
YS0880120FS THROTTLE STOP ASSEMBLY$3.10
YS0885120FS DRIVE WASHER SET$22.95
YS0895120FS EXHAUST PIPE ASSEMBLY$18.75
YS0900120FS GASKET SET$10.75
YS0905120FS O RING SET$16.95
YS100061LS REAR EXHAUST CRANKCASE$150.75
YS100561LS CYLINDER HEAD$43.25
YS101061LS HEAD SHIM$2.95
YS101561LS HEAD SCREWS$3.10
YS102061LS REAR EXHAUST PISTON & LINER$147.00
YS102561LS WRIST PIN$6.25
YS103061LS WRIST PIN RETAINER$6.25
YS103561LS CON ROD$18.75
YS104061LS CRANKSHAFT$52.50
YS104561LS REAR BEARING$28.25
YS105061LS FRONT BEARING$13.95
YS105561LS KEY WAY$3.10
YS106061LS BACK PLATE$9.25
YS106161LS BACK PLATE-H$8.75
YS106561LS BACK PLATE GASKET$3.10
YS107061LS BACK PLATE SCREWS$3.10
YS107561LS THROTTLE BODY$38.50
YS108061LS THROTTLE BODY GASKET$3.10
YS108561LS THROTTLE BARREL$19.95
YS109061LS THROTTLE BARREL RETAINER$3.10
YS109561LS THROTTLE STOP SCREW$3.10
YS111061LS NEEDLE SOCKET O RING$3.10
YS111561LS NEEDLE DETENT$3.10
YS112061LS REGULATOR BODY$38.50
YS112561LS REGULATOR GASKET$3.10
YS113061LS DIAPHRAGM$3.10
YS113561LS REGULATOR ADJUSTING SCREW$4.75
YS114061LS REGULATOR SCREW$2.05
YS114561LS PLUNGER$3.10
YS115061LS REGULATOR SPRING$3.10
YS115561LS REGULATOR MOUNTING SCREW$4.75
YS116061LS SIDE EXHAUST CRANKCASE$150.75
YS116561LS SIDE PISTON & LINER$147.00
YS117561LS O RING SET$4.75
YS118061LS REGULATOR ASSEMBLY$59.95
YS118561LS CARBURETOR ASSEMBLY$102.75
YS119061LS GASKET SET$9.25
YS1195YS FUEL FILTER$4.75
YS120061LS PISTON LINER$77.25
YS120561LS PISTON REAR EXHAUST$43.25
YS121061LS PISTON RING$16.95
YS121561LS CRANKSHAFT$52.50
YS122061LS DRIVE WASHER SPACER$3.10
YS122561LS THROTTLE BODY$52.50
YS123061LS THROTTLE BARREL$19.95
YS123561LS SUB NEEDLE$9.25
YS124061LS SUB NEEDLE O RING$1.50
YS124561LS REGULATOR ADJUSTING SCREW$3.10
YS125061LS PISTON SIDE EXHAUST$43.25
YS126061LS O RING SET$6.25
YS126561LS PISTON & LINER REAR$131.25
YS127061LS PISTON & LINER SIDE$131.25
YS127561LS THROTTLE STOP SPRING$2.79
YS130061AR CRANKCASE$138.95
YS131061AR CYLINDER HEAD$50.95
YS132061AR PISTON & LINER$123.50
YS133061AR CRANKSHAFT$56.95
YS136061AR CRANKSHAFT RING$30.95
YS137061AR OIL PLUG$3.10
YS1400120AC CRANKCASE$144.95
YS1420120AC CRANKSHAFT$79.25
YS1430120AC PISTON$50.95
YS1440120AC BACK PLATE ASSEMBLY$87.95
YS1450120AC CARBURETOR BODY$55.50
YS1460120AC THROTTLE BARREL$20.95
YS1470120AC CRANKSHAFT RINGS$30.95
YS1480120AC AIR CHAMBER$134.25
YS1485120AC AIR CHAMBER GASKET$6.25
YS1490120AC AIR CHAMBER BRACKET$4.75
YS1500120AC BRACKET SCREW$4.75
YS1510120AC AIR CHAMBER NIPPLE$3.10
YS1520120AC CHECK VALVE BRACKET$6.25
YS1530120AC BRACKET SCREW$1.50
YS1540120AC WRIST PIN PLUG$4.75
YS1550120AC CARBURETOR ASSEMBLY$149.75
YS157091AC CRANKCASE$42.95
YS157191AC NEW CRANKCASE$43.95
YS158191AC NEW CYLINDER HEAD ASSEMBLY$115.50
YS159091AC INTAKE VALVE$15.75
YS160091AC EXHAUST VALVE$14.25
YS161091AC HEAD GASKET$2.95
YS161191AC NEW CYLINDER HEAD GASKET$3.95
YS162091AC CYLINDER LINER$37.25
YS162191AC NEW CYLINDER LINER$38.25
YS163091AC HEAD CREWS$4.25
YS164091AC VALVE COVER$11.50
YS165091AC VALVE COVER GASKET$2.95
YS166091AC VALVE COVER SCREWS$2.95
YS167091AC AIR CHAMBER$12.95
YS168091AC AIR CHAMBER GASKET$2.95
YS169091AC AIR CHAMBER SCREWS$4.25
YS170091AC AIR CHAMBER O RING$1.50
YS172091AC REAR BEARING$15.95
YS173091AC FRONT OIL SEAL$8.50
YS175091AC KEY WAY$2.95
YS176091AC PISTON$35.95
YS177091AC PISTON RING$14.25
YS178091AC WRIST PIN$7.25
YS179091AC ROCKER ARM SET$27.50
YS180091AC ROCKER ARM SHAFT$7.25
YS181091AC ROCKER ARM SCREW$1.50
YS182091AC CAM GEAR COVER$5.75
YS183091AC CAM COVER O RING$1.50
YS184091AC CAM COVER SCREWS$2.95
YS185091AC PUSH RODS$5.50
YS186091AC PUSH ROD COVERS$7.25
YS187091AC CON ROD$20.25
YS188091AC BACK PLATE$34.50
YS189091AC DISK VALVE$18.95
YS190091AC DISK VALVE PIN$5.75
YS191091AC DISK VALVE PIN RETAINER$2.95
YS192091AC DISK VALVE PIN E RING$1.50
YS193091AC BACK PLATE GASKET$2.95
YS194091AC BACK PLATE SCREWS$4.25
YS195091AC CARBURETOR BODY$40.25
YS196091AC THROTTLE BARREL$22.95
YS197091AC CARBURETOR GASKET$2.95
YS199091AC REGULATOR BODY$34.50
YS200091AC DIAPHRAGM$2.95
YS202091AC GASKET SET$12.95
YS203091AC SPRING RETAINER SET$5.75
YS204091AC VALVE SPRING RETAINER CLIP$5.75
YS205091AC LOW SPEED NEEDLE$8.50
YS206091AC LOW SPEED NEEDLE O RING$1.50
YS207091AC THROTTLE BARREL SEAL$2.95
YS208091AC CARBURETOR SCREWS$2.95
YS209091AC O RING SET$12.95
YS210091AC BACK PLATE ASSEMBLY$65.95
YS211091AC CARBURETOR ASSEMBLY$103.25
YS212091AC REGULATOR ASSEMBLY$51.95
YS212591ACH CRANKSHAFT$54.95
YS213091ACH THROTTLE BARREL$24.75
YS213591ACH REGULATOR SCREW$4.25
YS214091ACH REGULATOR PLATE$18.95
YS214591ACH CARBURETOR ASSEMBLY$97.95
YS215091ACH GASKET SET$14.95
YS2152120SC CRANKCASE$128.50
YS2155120SC CYLINDER HEAD$79.25
YS2160120SC INTAKE VALVE$21.50
YS2165120SC EXHAUST VALVE$26.00
YS2170120SC VALVE SPRING SET$7.25
YS2175120SC SPRING RETAINER SET$7.25
YS2180120SC VALVE SPRING CLIP$7.25
YS2185120SC CRANKSHAFT$73.75
YS2190120SC CRANKSHAFT RING$25.95
YS2195120SC PISTON$43.25
YS2200120SC CON ROD$25.95
YS2225120SC RETAINER SCREW$3.00
YS2230120SC CAM GEAR COVER$5.10
YS2235120SC CAM COVER SCREWS$4.25
YS2240120SC FRONT OIL SEAL$8.75
YS2245120SC CARBURETOR BODY$36.00
YS2250120SC THROTTLE BARREL$25.95
YS2255120SC THROTTLE BARREL SEAL$4.25
YS2260120SC CARBURETOR GASKET$3.00
YS2265120SC DRIVE WASHER$17.25
YS2270120SC PROPELLER WASHER$2.25
YS2275120SC REGULATOR BALLAST$4.25
YS2280120SC GASKET SET$10.00
YS2285120SC O RING SET$17.25
YS2290120SC CARBURETOR ASSEMBLY$116.95
YS2295120SC BACK PLATE ASSEMBLY$73.50
YS2300120SC CYLINDER HEAD ASSEMBLY$129.95
YS2305120NC CYLINDER HEAD$67.95
YS2310120NC CRANKSHAFT$69.95
YS2315120NC CARBURETOR BODY$35.95
YS2320120NC THROTTLE BARREL$26.95
YS2340120NC CYLINDER HEAD ASSEMBLY$116.95
YS2345120NC CARBURETOR ASSEMBLY$93.95
YS2351120FZ CRANKCASE$128.00
YS235561ST CRANKCASE$108.95
YS236061ST CYLINDER HEAD$39.95
YS236561ST PISTON & LINER SET$113.50
YS237061ST CYLINDER LINER$66.50
YS237561ST PISTON$35.95
YS238061ST PISTON RING$15.50
YS238561ST WRIST PIN$5.75
YS239061ST CON ROD$16.95
YS239561ST CRANKSHAFT$48.75
YS240061ST BACK PLATE$8.75
YS240561ST CARBURETOR ASSEMBLY$117.50
YS241061ST CARBURETOR BODY$48.75
YS241561ST THROTTLE BARREL$18.75
YS242061ST HEAD SHIM$2.95
YS243061ST REAR BEARING$17.25
YS243561ST CARBURETOR SCREWS$2.95
YS244061ST CARBURETOR SUB PLATE$18.75
YS244561ST REGULATOR SUB PLATE$8.95
YS245061ST REGULATOR ASSEMBLY$51.50
YS245561ST-H REGULATOR SUB PLATE$18.75
YS246061ST DIAPHRAGM$5.75
YS248061ST REGULATOR GASKET$2.95
YS251061ST CHECK VALVE$10.50
YS251561ST GASKET SET$7.25
YS252061ST O RING SET$5.75
YS2600140FZ CRANKCASE$142.95
YS2605140FZ HEAD SHIM$3.50
YS2610140FZ CYLINDER HEAD$80.25
YS2615140FZ HEAD BOLTS$4.95
YS2620140FZ CRANKSHAFT$72.25
YS2625140FZ CYLINDER LINER$46.50
YS2630140FZ PISTON$78.50
YS2635140FZ WRIST PIN RETAINER SET$8.25
YS2640140FZ PISTON RING$19.50
YS2645140FZ CON ROD$32.00
YS2650140FZ BACK PLATE$81.95
YS2655140FZ BACK PLATE SCREWS$4.95
YS2660140FZ CAM GEAR$48.25
YS2665140FZ PUSH ROD SET$14.50
YS2670140FZ PUSH ROD COVERS$11.25
YS2675140FZ FUEL NIPPLES$8.25
YS2680140FZ CARBURETOR BODY$40.25
YS2685140FZ THROTTLE BARREL$32.00
YS2690140FZ NEEDLE VALVE$12.95
YS2695140FZ NEEDLE O RING$3.50
YS2700140FZ NEEDLE SEAT$9.95
YS2705140FZ NEEDLE SEAT O RING$3.50
YS2710140FZ NEEDLE DETENT$4.95
YS2715140FZ DRIVE WASHER$17.75
YS2720140FZ DRIVE WASHER RETAINER$4.95
YS2723140FZ INTAKE PIPE$14.50
YS2725140FZ GASKET SET$11.25
YS2730140FZ O RING SET$19.50
YS2735140FZ CARBURETOR ASSEMBLY$126.95
YS2740140FZ NEEDLE VALVE ASSEMBLY$28.95
YS2745140FZ BACK PLATE ASSEMBLY$81.95
YS2750140FZ HEAD ASSEMBLY$136.50
YS280053FZ CRANKCASE$40.95
YS280553FZ CYLINDER HEAD ASSEMBLY$70.95
YS281053FZ INTAKE VALVE$16.25
YS281553FZ EXHAUST VALVE$14.50
YS282053FZ VALVE SPRING SET$5.75
YS282553FZ VALVE SPRING RETAINER SET$5.75
YS283053FZ HEAD SEAL$4.50
YS284053FZ HEAD BOLT SET$4.50
YS284553FZ VALVE COVER$10.25
YS285053FZ VALVE GASKET$3.50
YS285553FZ VALVE SCREWS$3.50
YS286053FZ INTAKE PIPE$12.25
YS286553FZ INTAKE PIPE O RING$3.50
YS287553FZ REAR BEARING$13.25
YS288053FZ FRONT BEARING$11.95
YS288553FZ FRONT SEAL$8.75
YS289053FZ DRIVE WASHER$13.25
YS289553FZ DRIVE WASHER RETAINER$4.50
YS290053FZ PROP WASHER$3.50
YS290553FZ PROP NUT SET$4.50
YS291053FZ PISTON$30.50
YS291553FZ PISTON RING$14.50
YS292053FZ WRIST PIN$7.50
YS292553FZ WRIST PIN RETAINER$5.75
YS293053FZ ROCKER ARM SET$24.95
YS293553FZ ROCKER ARM SHAFT$5.75
YS294053FZ SHAFT SCREW$3.50
YS294553FZ CAM GEAR$41.95
YS295053FZ CAM COVER$5.75
YS295553FZ COVER O RING$1.50
YS296053FZ CAM BEARING SET$16.25
YS296553FZ CAM FOLLOWER SET$11.75
YS297053FZ PUSH ROD SET$5.75
YS297553FZ PUSH ROD COVER SET$7.50
YS298053FZ PUSH ROD COVER O RING$4.50
YS298553FZ CON ROD$17.50
YS299053FZ BACK PLATE$29.95
YS299553FZ DISC VALVE$15.25
YS300053FZ DISC VALVE PIN$5.75
YS300553FZ BACK PLATE GASKET$3.50
YS301053FZ BACK PLATE SCREWS$3.50
YS301553FZ CARBURETOR BODY$30.75
YS302053FZ THROTTLE BARREL$20.50
YS302553FZ THROTTLE BARREL SEAL$5.75
YS303053FZ NEEDLE VALVE$13.25
YS303553FZ FUEL NIPPLE$2.50
YS304053FZ CARBURETOR GASKET$3.50
YS304553FZ CARBURETOR SCREWS$4.50
YS305053FZ REGULATOR BODY$29.25
YS305553FZ DIAPHRAGM$4.50
YS305753FZ REGULATOR SPRING$4.50
YS306053FZ REGULATOR SCREWS$3.50
YS306553FZ MUFFLER$20.95
YS307053FZ HEADER PIPE$5.95
YS307553FZ HEADER LOCK NUT$4.50
YS308053FZ GASKET SET$7.50
YS308553FZ O RING SET$13.25
YS309053FZ NEEDLE VALVE ASSEMBLY$27.95
YS309553FZ MUFFLER ASSEMBLY$26.50
YS400053FZ BACK PLATE ASSEMBLY$47.95
YS400553FZ CYLINDER HEAD ASSEMBLY$104.95
YS4010ST2 LOW SPEED NEEDLE$7.50
YS4015ST2 LOW SPEED O RING$2.50
YS4105ST2 CRANKCASE$110.95
YS4110ST2 CYLINDER LINER$65.95
YS4115ST2 PISTON$35.95
YS4120ST2 CON ROD$20.95
YS4125ST2 CRANKSHAFT$49.95
YS4130ST2 CARBURETOR BODY$49.95
YS4135ST2 THROTTLE BARREL$21.95
YS4140ST2 HIGH SPEED NEEDLE$10.50
YS4145ST2 LOW SPEED NEEDLE$11.95
YS4150ST2 LOW SPEED NEEDLE O RING$3.25
YS4155ST2 REGULATOR ASSEMBLY$55.95
YS4160ST2 O RING SET$6.50
YS4165ST2 PISTON/RING/LINER SET$119.95
YS4170ST2 CARBURETOR ASSEMBLY$117.50
YS4200140L CRANKCASE$119.95
YS4205140L CRANKSHAFT$69.95
YS4210140L CARBURETOR BODY$44.95
YS4215140L THROTTLE BARREL$31.95
YS4220140L CARBURETOR ASSEMBLY$129.95
YS430591FZ CARBURETOR BODY$56.25
YS431091FZ THROTTLE BARREL$32.95
YS431591FZ BARREL SEAL$4.95
YS432091FZ CRANKSHAFT$61.25
YS432591FZ DRIVE WASHER$18.75
YS433091FZ DRIVE WASHER RETAINER$5.95
YS433591FZ MUFFLER ASSEMBLY$44.95
YS434091FZ MUFFLER$36.25
YS434591FZ EXHAUST HEADER$12.95
YS435091FZ EXHAUST LOCK NUT$8.25
YS435591FZ O RING SET$16.25
YS436091FZ CARBURETOR ASSEMBLY$109.95
YS436563 CRANKCASE$48.50
YS437063 CYLINDER HEAD ASSEMBLY$119.50
YS437563 CYLINDER HEAD W/ LINER$80.50
YS438063 CRANKSHAFT$59.50
YS438563 PISTON$38.50
YS439063 PISTON RING$19.50
YS439563 WRIST PIN$8.50
YS440063 CAM GEAR COVER SCREW SET$3.50
YS442080 CRANKCASE$124.50
YS442580 CYLINDER HEAD$46.50
YS443080 HEAD GASKET$3.10
YS443580 PISTON & LINER$121.50
YS444080 CYLINDER LINER$69.50
YS444580 PISTON$38.50
YS445080 PISTON RING$19.50
YS445580 CONNECTING ROD$18.75
YS446080 CRANKSHAFT$60.50
YS446580 CARBURETOR ASSEMBLY$129.50
YS447080 CARBURETOR BODY$53.50
YS447580 THROTTLE BARREL$22.50
YS448080 NEEDLE VALVE ASSEMBLY$28.95
YS448580 NEEDLE VALVE$12.95
YS4490140DZ CRANKCASE$152.95
YS4495140DZ VALVE COVER$17.95
YS4500140DZ HEAD ASSEMBLY$139.95
YS4505140DZ CYLINDER HEAD$84.95
YS4510140DZ INTAKE TAPPET ADJUSTING SCREW$3.10
YS4515140DZ EXHAUST TAPPET ADJUSTING SCREW$4.95
YS4520140DZ CRANKSHAFT$79.95
YS4525140DZ PISTON$78.50
YS4530140DZ CONNECTING ROD$34.95
YS4535140DZ BACK PLATE ASSEMBLY$81.95
YS4540140DZ BACK PLATE$49.95
YS4545140DZ DISC VALVE$21.95
YS4550140DZ INSULATOR$24.95
YS4560140DZ BACK PLATE SCREW$5.95
YS4565140DZ CAM GEAR$48.95
YS4570140DZ INTAKE CAM FOLLOWER$7.95
YS4575140DZ EXHAUST CAM FOLLOWER$7.95
YS4580140DZ EXHAUST PUSH ROD$7.95
YS4585140DZ PUSH ROD COVER$7.95
YS4595140DZ FUEL PUMP ASSEMBLY$129.95
YS4600140DZ REGULATOR BODY$32.95
YS4605140DZ DIAPHRAGM$5.75
YS4610140DZ REGULATOR SPRING$3.10
YS4615140DZ REGULATOR SCREW SET$3.10
YS4620140DZ FUEL PUMP BODY$32.95
YS4625140DZ PUMP VALVE$4.95
YS4630140DZ PUMP VALVE SPRING$3.10
YS4635140DZ FUEL PUMP PLATE$32.95
YS4640140DZ FUEL PUMP SCREWS$3.10
YS4645140DZ FUEL PUMP GASKET$3.10
YS4650140DZ FUEL PUMP PLUNGER$7.95
YS4655140DZ FUEL PUMP INSULATOR$5.75
YS4660140DZ INSULATOR O RING$3.10
YS4665140DZ FUEL PUMP STAY SET$5.75
YS4705140DZ INSULATOR GASKET$3.10
YS4710140DZ GASKET SET$12.95
YS4715140DZ O RING SET$20.95
YS4720140DZ FUEL TANK CLUNK$12.95
YS4725140DZ DISC VALVE PIN$9.95
YS4730140DZ CAM FOLLOWER$14.95
YS4735140DZ UPPER PUSH ROD$5.95
YS4740140DZ LOWER PUSH ROD$5.95
YS4745140DZ CARBURETOR ASSEMBLY$139.95
YS4750140DZ CARBURETOR BODY$81.95
YS4755140DZ THROTTLE BARREL SEAL$5.95
YS4760140DZ CARBURETOR GASKET$3.10
YS4765140DZ RESTRICTOR SET$9.95
YS477091H CRANKCASE$124.50
YS477591H CYLINDER HEAD$51.50
YS478091H HEAD GASKET$3.10
YS478591H HEAD SCREWS$3.10
YS479091H CYLINDER LINER$72.50
YS479591H PISTON$42.50
YS480091H PISTON RING$22.50
YS480591H CONNECTING ROD$22.50
YS481091H CRANKSHAFT$63.50
YS481591H BACK PLATE$9.50
YS482091H BACK PLATE GASKET$3.10
YS482591H CARBURETOR BODY$53.50
YS483091H CARBURETOR GASKET$3.10
YS483591H THROTTLE BARREL$23.50
YS484091H SEAL RING$3.95
YS484591H LOW SPEED NEEDLE$12.95
YS485091H CARBURETOR SUBPLATE....$18.75
YS485591H GASKET SET$8.25
YS486091H PISTON & LINER$129.95
YS486591H CARBURETOR ASSEMBLY$129.95
YS4870110 CRANKCASE$56.95
YS4875110 CYLINDER HEAD ASSEMBLY$124.95
YS4880110 CYLINDER HEAD WITH LINER$104.95
YS4890140SPT CRANKCASE$142.95
YS4900140SPT CRANKSHAFT$72.25
YS4905140SPT BACK PLATE ASSEMBLY$81.95
YS4910140SPT BACK PLATE$49.95
YS4915140SPT CARBURETOR ASSEMBLY$126.95
YS4920140SPT CARBURETOR BODY$40.25
YS4925140SPT MUFFLER SET$44.95
YS4930FZ140S MUFFLER$36.25
YS4GP4 CYCLE GLOW PLUG$10.00
YS500063S CRANKCASE$48.95
YS500563S CYLINDER HEAD ASSEMBLY$121.95
YS501063S CYLINDER HEAD$82.95
YS501563S CYLINDER GASKET$5.95
YS502063S PISTON$42.95
YS502563S REGULATOR ADJ SCREW$5.95
YS503063S REGULATOR ADJ SCREW O-RING$3.95
YS503563S PLUNGER SPRING$5.95
YS504063S PLUNGER$4.95
YS504563S REGULATOR BODY A$19.95
YS505063S DIAPHRAGM$3.95
YS505563S REGULATOR BODY B$17.95
YS506063S REGULATOR BRACKET SET$6.95
YS506563S BOTTOM COVER SET$4.95
YS507063S BOTTOM COVER GASKET$3.95
YS507563S REGULATOR ASSEMBLY$54.95
YS508063S GASKET SET$12.95
YS508563S O RING SET$16.95
YS5095160DZ CRANKCASE$154.95
YS5100160DZ HEAD GASKET$3.10
YS5105160DZ CRANKSHAFT$91.95
YS5110160DZ CYLINDER LINER$54.95
YS5115160DZ PISTON$78.50
YS5120160DZ WRIST PIN$8.75
YS5125160DZ PISTON RING$22.95
YS5130160DZ CHECK VALVE$24.95
YS5135160DZ TUBE HOLDER$8.75
YS5140160DZ BACKPLATE ASEMBLY$81.95
YS5165160 DZ CONNECTING ROD$36.95
YS5385YS MOUNT SPACER "A"$30.00
YS5390YS MOUNT SPAVER "B"$19.50
YS6260REAR MOUNT ASSEMBLY99.95
YS6265REAR MOUNT89.95
YS627070FZ-S CRANKCASE59.95
YS627570FZ-S CYLINDER HEAD ASSEMBLY134.95
YS628070FZ-S CYLINDER HEAD99.95
YS628570FZ-S CRANKSHAFT74.95
YS629070FZ-S CRANKSHAFT RING24.95
YS629570FZ-S REAR BEARING18.95
YS630070FZ-S PISTON47.95
YS630570FZ-S PISTON RING21.95
YS631070FZ-S WRIST PIN13.95
YS631570FZ-S CARBURETOR BODY59.95
YS632070FZ-S THROTTLE BARREL28.95
YS632570FZ-S NEEDLE SOCKET16.95
YS633070FZ-S NEEDLE SOCKET O-RING SET4.95
YS633570FZ-S REGULATOR ASSEMBLY59.95
YS634070FZ-S REGULATOR BODY B34.95
YS634570FZ-S REGULATOR SET SCREWS3.95
YS635070FZ-S REGULATOR SPACER3.95
YS635570FZ-S GASKET SET13.95
YS636070FZ-S O-RING SET23.95
YS636570FZ-S CONNECTING ROD28.95
YS637070FZ-S BACK PLATE ASSEMBLY74.95
YS637570FZ-S BACK PLATE44.95
YS638070FZ-S DISC VALVE27.95
YS638570FZ-S DISC VALVE PIN8.95
YS639070FZ-S DISC SET SCREW3.95
YS639570FZ-S NEEDLE VALVE SET32.95
YS640070FZ-S PUSH ROD COVER SET17.95
YS6405115S CRANKCASE69.95
YS6410115S CYLINDER HEAD ASSEMBLY149.95
YS6415115S CYLINDER HEAD119.95
YS6420115S CRANKSHAFT79.95
YS6425115S REAR BEARING26.95
YS6430115S PISTON54.95
YS6435115S CONNECTING ROD26.95
YS6440115S BACK PLATE ASSEMBLY74.95
YS6445115S BACK PLATE48.95
YS6450115S DISC VALVE24.95
YS6455115S DISC VALVE PIN7.95
YS6460115S DISC VALVE SET SCREW3.95
YS6465115S CARBURETOR BODY56.95
YS6470115S THROTTLE BARREL32.95
YS6475115S NEEDLE VALVE SET34.95
YS6480115S NEEDLE SOCKET16.95
YS6485115S REGULATOR SPACER3.95
YS6490115S GASKET SET15.95
YS6495115S O-RING SET24.95
YS6505913DS CRANKCASE136.95
YS6510913DS CYLINDER HEAD64.95
YS6515913DS PISTON LINER ASSEMBLY132.95
YS6520913DS LINER76.95
YS6525913DS PISTON46.95
YS6530913DS CRANKSHAFT69.95
YS6535913DS BACKPLATE44.95

To order parts or service, please CALL us Monday – Friday between 9am – 5pm PST.