Yamaha Xt 125 X Manual
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11 IDM C144600300.fm TECHNICAL SPECIFICATIONSSPEC Brakes: Type of Front BrakeDisc brake with hydraulic drive Front Brake OperationRight hand Type of Rear BrakeDisc brake with hydraulic drive Rear Brake OperationRight foot Suspensions: FrontHydraulic fork RearSwinging arm with hydraulic shock absorber Shock Absorbing System: FrontCoil spring / Oil damper RearCoil spring / Oil damper Wheel Stroke: Front Wheel Stroke170 mm (6.69 in)170 mm (6.69 in) Rear Wheel Stroke190 mm (7.48 in)190 mm (7.48 in) Electrical System: Starting SystemCDI Generator SystemMagnetic AC Battery Capacity12V-6.5Ah Headlight:Bulb Headlight Power: Headlight 12V 35/35W Rear Light/Stop Light12V P21/5W Front/Rear Indicators12V 10Wx4 Plate Light12V 5W Dashboard Warning LightLED Warning Lights: FUEL LEVELLED DIRECTION LED NEUTRALLED HEADLIGHTS ON FULL BEAM LED PARKING LIGHTSLED Amperage: Main Fuse10A ModelXT 125RXT 125X
12 IDM C144600300.fm SERVICING TECHNICAL DATASPEC SERVICING TECHNICAL DATA ENGINE PictureDescriptionStandardLimit Cylinder Head: Planarity Error The lines indicate the points for the planarity measures. 0.03 mm Cylinder: Hole size54.00~54.020 mm- Cylinder:Hole size54.00~54.020 mmPiston: Piston Diameter (D)53.977~53.996 mm- Measure Point (H)4.5 mm- Piston/Cylinder Clearance0.020~0.028 mm0.15 mm Hole diameter (F)15.002~15.013 mm- Pin Diameter14.991~15.000 mm- Timing System: Type of DriveChain drive- Timing Cams: Inlet Cam Height (A) 25.881~25.981 mm25.851 mm Exhaust Cam Height (A) 25.841~25.941 mm25.811 mm Inlet Cam Width (B) 21.195~21.295 mm21.165 mm Exhaust Cam Width (B) 21.05~21.15 mm21.02 mm Inlet Cam Height (C)4.391 mm- Timing Shaft Eccentricity-0.03 mm Compensators: Bearing Inner Diameter10.000~10.015 mm10.03 mm Bearing Outer Diameter9.981~9.991 mm9.95 mm Timing Chain: TypeBush chain/P- Pitch per Link Number6.35 x 88- AdjustmentAutomatic- Valves, Housings and Guides: Inlet Valve Clearance (Cold Operation)0.08~0.12 mm- Exhaust Valve Clearance (Cold Operation)0.10~0.14 mm- Inlet Valve Diameter (A) 25.9~26.1 mm- Exhaust Valve Diameter (A) 21.9~22.1 mm- Inlet Valve Width (B) 1.1~3.0 mm-
13 IDM C144600300.fm SERVICING TECHNICAL DATASPEC Exhaust Valve Width (B) 1.7~2.8 mm- Valve Housing Width (C) 0.9~1.1 mm1.6 mm Inlet Valve Thickness (D) 0.4~0.8 mm- Exhaust Valve Thickness (D) 0.8~1.2 mm- Diameter of Inlet Valve Stem 4.975~4.990 mm4.950 mm Diameter of Exhaust Valve Stem4.960~4.975 mm4.935 mm Diameter of Inle t Valve Guides 5.000~5.012 mm5.042 mm Clearance of Inlet valve Guide/Stem0.010~0.037 mm0.08 mm Clearance of Exhaust Valve Guide/Stem0.025~0.052 mm0.10 mm Valve Stem Eccentricity-0.010 mm Valve Springs: Free Length38.78 mm37.0 mm Spring Length when the Valve is Closed25.6 mm- Compression13.2~15.5 kgf (132~155 N)- Winding Direction (from top)Clockwise- Upper Piston Ring: TypeBarrel- Dimensions (BxT)1.0x2.1 mm- Distance between Ends (when installed)0.15~0.30 mm0.4 mm Side Clearance0.03~0.07 mm0.12 mm Intermediate Piston Ring: TypeTa p e r- Dimensions (BxT)1.0x2.1 mm- Distance between Ends (when installed)0.15~0.30 mm0.4 mm Side Clearance0.02~0.06 mm0.12 mm Lower Piston Ring: Dimensions (BxT)2.0x2.2 mm- Distance between Ends (when installed)0.2~0.7 mm- Drive Shaft: Crank Width (A)46.95~47.00 mm- Eccentricity (C)-0.03 mm Side Clearance of Big End of the Connecting Rod (D)0.15~0.45 mm- Side Clearance of Small End of the Connecting Rod (E)-0.8 mm PictureDescriptionStandardLimit
14 IDM C144600300.fm SERVICING TECHNICAL DATASPEC Clutch: Clutch Disc Thickness (conductors)2.92~3.08 mm2.80 mm Quantity5 pcs- Clutch Disc Thickness (conduced)1.05~1.35 mm0.05 mm Quantity4 pcs- Clutch Spring Free Length 31 mm- Quantity4 pcs- Min. Free Length29 mm- Carburettor: ID Mark3D6- Main Jet#105- Main Air Jet1.2- Jet Pin5EJ9-2- Jet NeedleN-7M(913)- Min. Outputf1.05- Min. Jet#12.5- Bypass1.6- Adjusting Screw Rev1- Valve Housing Dimensions1.8- Starter Jet22.5- Jet Power#60- Fuel Level7.5 mm- Float Height18.9 mm- Min. Speed1600~1800 RPM- PictureDescriptionStandardLimit
15 IDM C144600300.fm SERVICING TECHNICAL DATASPEC LUBRICATION DIAGRAMS IDM-44600300900.tif Compensator Arm(Suction) Compensator Arm (Exhaust) Compensator ShaftCam Shaft Crankcase (right) Clutch Lever Oil Suction Filter Oil Pump Centrifugal Filter Motor Oil inCrankcase Motor Axis Main Axis Do not damage the crankcase surface to avoid oil leakage.CAUTION:
16 IDM C144600300.fm SERVICING TECHNICAL DATASPEC IDM-44600301000.tif Cam Shaft Centrifugal Filter Crankcase Main Axis Clutch Cover (Right) Chain Guard (Right) Cover (Left) Motor Axis Chain Guard(Left) To enhance performance, always use “Yamalube” oil.CAUTION: Cylinder Head Cylinder
17 IDM C144600300.fm SERVICING TECHNICAL DATASPEC ENGINE TIGHTENING TORQUES Components To Be TightenedTypeQ.tyThreadTightening TorqueNotesKg*mN *m Cylinder HeadScrew Screw4 2M8 M62.2 1.022 10Oil check Plug-1M101.2512.5 Cylinder Head Side GuardScrew2M61.010 Valve Cap-2M451.7517.5 Magnet RotorScrew1M127.070 Chain GuideScrew1M61.010 Adjusting ScrewNut2M50.757.5 Timing Chain PinionScrew1M82.020 Camshaft Locking PlateScrew1M61.010 Plug (Turnbuckle)Plug1M80.757.5 Turnbuckle UnitScrew2M61.010 Oil PumpScrew2M60.77 Drain PlugScrew1M122.020 ManifoldScrew2M61.010 Carburettor/Manifold ClampScrew1M40.22 Carburettor/Air Filter ClampScrew1M40.22 SilencerScrew2M61.010 Oil Sump Torque Screw Screw Screw2 7 1M6 M6 M61.0 1.0 1.010 10 10 Flywheel Side Cap Screw Screw Screw4 2 1M6 M6 M61.0 1.0 1.010 10 10 Clutch Side Cap Screw Screw Screw6 2 1M6 M6 M61.0 1.0 1.010 10 10 PlateScrew1M60.77 Ignition Stage Control PlugScrew1M140.77 Main PlugScrew1M320.77 Starting Pedal Crank Base Nut1M125.050 Engine PinionNut1M127.070 Disc PusherScrew4M50.66 Clutch HubNut1M126.060 Clutch Disc Pusher RodNut1M60.88With locking washer Locking PlateScrew2M61.010 Engine PinionScrew2M81.010 Gear Indicator LeverScrew1M61.010 Desmodronic Pulling Cam Screw1M61.212 Pick-upScrew2M61.010 Idling Light Sensor-1M100.44 StatorScrew3M61.010 Oil Pressure CheckscrewScrew1-0.77
18 IDM C144600300.fm SERVICING TECHNICAL DATASPEC FRAME DetailStandardLimit XT 125RXT 125XXT 125RXT 125X Front Wheel: TypeSpoked wheelSpoked wheel Rim Dimensions21x1.8517x2.50 Rim MaterialAluminiumAluminium Stroke170 mm (6.69’’)170 mm (6.69’’) Max. Radial Clearance1 mm1 mm Max. Side Clearance0.5 mm0.5 mm Rear Wheel: TypeSpoked wheelSpoked wheel Rim Dimensions18x2.5017x3.00 Rim MaterialAluminiumAluminium Stroke190 mm (7.48)190 mm (7.48”) Max. Radial Clearance1 mm (0.04)1 mm (0.04) Max. Side Clearance0.5 mm (0.02)0.5 mm (0.02) Front Disc Brake: Disc Dimensions245.0x3.5 mm260.0x3.5 mm Inside Pad Lining Thickness3 mm3 mm0.8 mm0.8 mm Inside Pad Lining Thickness3 mm3 mm0.8 mm0.8 mm Pump Piston Diameter11 mm11 m m Piston Pliers Diameter32 mm25 mm Recommended FluidDOT 4DOT 4 Rear Disk Brake: Disc Dimensions218x3.5 mm Inside Pad Lining Thickness4 mm1.0 mm Inside Pad Lining Thickness4 mm1.0 mm Pump Piston Diameter12.7 mm Piston Pliers Diameter32 mm Recommended FluidDOT 4 Steering System: Type of Steering SystemConical roller bearing Bearing Quantity1 upper/1 lower
19 IDM C144600300.fm SERVICING TECHNICAL DATASPEC Front Suspension: Fork Free Length575 mm Spring Stiffness K14.8 N/mm Spring Stroke K1 (Packed Spring)250 mm Available Optional SpringNO Recommended OilSAE10 Quantity 285 cc/Rod Level180 mm (limit stop, with no spring) Rear Suspension: TypeSwinging Arm Rear Shock Absorber Compression45 mm Spring Free Length163 mm Spring Length when Installed158 mm Spring PreloadHard/Soft (5 mm) Spring Stiffness (K)17.7 daN/mm Spring Stroke55 mm Available Optional SpringYES Gas/Air Pressure Included 12.5±3 bars Drive Chain: Type/Manufacturer428H G&G/DID428H G&G/DID Articulated Joint N.128126 Front Brake Lever/Rear Brake Pedal: Front Brake Lever Clearance2~5 mm Brake Pedal Clearance15 mm DetailStandardLimit XT 125RXT 125XXT 125RXT 125X
20 IDM C144600300.fm SERVICING TECHNICAL DATASPEC FRAME TIGHTENING TORQUES Components To Be TightenedTypeQ.tyThreadTightening TorqueNoteskg*mN *m Front Wheel PinScrew1M14x1.54.545 Front Wheel Pin LockingScrew1M8x252.020 Front Brake PliersScrew2M83.030 Muffler Side ConnectionScrew3M60.88 Engine Rear Connection Screw2M82.323 Fork PinScrew1M14x1.56.060 Engine Front ConnectionScrew2M82.323 Front Pump Clamp Screw2M60.66 Rear WheelScrew1M14x1.58.585 Command ClampScrew2M60.33 Rear Shock AbsorberScrew2M104.545 Upper CrossScrew2M81.9519.5 Handlebar U-boltScrew4M82.1521.5 Steering SystemNut1M25x13.030 Rear FrameScrew4M82.020 SilencerScrew1M82.323