Yamaha Xt 125 X Manual
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IDM C144600300.fm 2005 XT 125R XT 125X SERVICE INFORMATION
3 IDM C144600300.fm WARNING This Manual has been written by Yamaha Motor and is addressed to Yamaha vendors and their qualified engineers. This Manual cannot cover any aspect of mechanical knowledge; therefore, anyone who will refer to this manual is expected to have a basic knowledge of the mechanical skills required for servicing and repairing Yamaha motorcycles. Repairing performed by unskilled personnel may cause motorcycles to be unserviceable and dangerous. Yamaha Motor is constantly searching for enhancing all its motorcycle models. Authorized Yamaha distributors will be informed of substantial changes and improvements made to specifications or mounting procedures; these ones will be stated in the following issues of this Manual, when required. NOTE: The motorcycle model and specifications are subject to changes without prior notice. IMPORTANT INFORMATION Particularly important information is highlighted as follows: The symbol of danger means CAUTION! BEWARE! YOUR SAFETY DEPENDS ON THIS! The non-observance of WARNINGS can cause serious injury or the death of the motorcyclist, of the people standing near the motorcycle or the repairer of the motorcycle. A CAUTION notice implies particular care to be taken not to damage the motorcycle. A NOTE contains important information for a better comprehension of the described procedures. WARNING: CAUTION: NOTE:
4 IDM C144600300.fm GRAPHIC SYMBOLS Symbols to are drawn as tabs to indicate the chapter number and its content. General Information Technical Specifications Scheduled Servicing and Adjustment Engine Carburetion Frame Electrical System Troubleshooting Symbols to are used to identify technical specifications stated in this Manual. Repairing Possible with Engine in Place Filling Up Lubricant Special Components Tightening Wear Limit, Distance Engine RPM Ω, V, A (to be measured with a tester) Symbols to illustrated in the diagram indicate the types of lubricant to be used and the greasing points. Use Engine Oil Use Oil for Spare Parts Use Molybdenum-Bisulphide Oil Use Grease for Bearings Use Grease Made of Light Lithium Soap Use Molybdenum-Bisulphide Grease Symbols - illustrated in the diagram indicate where to apply the high-resistance sealer and where to install new Component Parts . Apply High-Resistance Sealer (LOCTITE®) Use a New Component Part 1118 11 12 13 14 15 16 17 18 1916 19 10 11 12 13 14 15 16 1722 17 18 19 20 21 22 2324 23 24 23 24 IDM-44600300100.tif 1314 1516 1718 1112 19110 112 114 116 111 113 115 117118119 120121122 123124
5 IDM C144600300.fm INDEX GENERAL INFORMATION ......................................................................................................6 IDENTIFICATION OF THE MOTORCYCLE .........................................................................6 SPECIAL COMPONENTS ....................................................................................................7 TECHNICAL SPECIFICATIONS ..............................................................................................9 GENERAL FEATURES ........................................................................................................9 SERVICING TECHNICAL DATA ...........................................................................................12 ENGINE ..............................................................................................................................12 LUBRICATION DIAGRAMS ................................................................................................15 ENGINE TIGHTENING TORQUES ....................................................................................17 FRAME ...............................................................................................................................18 FRAME TIGHTENING TORQUES .....................................................................................20 ELECTRICAL SYSTEM ......................................................................................................21 WIRING ...................................................................................................................................24 WIRING (1) .........................................................................................................................24 WIRING (2) ......................................................................................................................... 26 SCHEDULED SERVICING AND ADJUSTMENT ...................................................................28 SCHEDULED MAINTENANCE AND GREASING ...............................................................28 WIRING DIAGRAM ................................................................................................................30
6 IDM C144600300.fm GENERAL INFORMATION GEN INFO GENERAL INFORMATION IDENTIFICATION OF THE MOTORCYCLE Serial Number of the Frame The Serial Number of the frame is marked on the metal tube of the handlebar. NOTE: The Serial Number of the frame is used for the motorcycle identification and registration. Serial Number of the Engine The Serial Number of the Engine is marked on the right side of the crankcase. NOTE: The first three figures of this Serial Number identify the motorcycle model; the remaining figures indicate the production number of the unit. NOTE: Technical specifications and drawings can be changed without prior notice. 1 1 IDM-44600300300.tif 1 1 IDM-44600300200.tif
7 IDM C144600300.fm GENERAL INFORMATION GEN INFO SPECIAL COMPONENTS The special components listed below are required for a complete and accurate tuning and assembly of the motorcycle. The use of proper special instruments prevents damages caused by improper instruments or made- up techniques. When ordering a special component, please refer to the list below to avoid any mistake. Component N.DescriptionPicture 90890-01312Fuel Indicator The fuel indicator is used to measure the fuel level in the carburettor float chamber. 90890-06760Rev Counter The rev counter is used to measure the engine RPM. 90890-04086/09All-purpose Clutch Support This support is used to lock the clutch when assembling or disassembling the clutch locking nut. 90890-01701Pulley Lock The pulley lock is used to lock the secondary pulley. 90890-01862Flywheel Puller This is used to pull out the flywheel. 90890-01304Pin Puller The pin puller is used to pull out the piston pin. 90890-01135Tool for Drive Shaft Remover This tool is used to remove the drive shaft or to separate the crankcase.
8 IDM C144600300.fm GENERAL INFORMATION GEN INFO (*) Indications from Yamaha are required about the compatibility of the components above. If they are not compatible, ID codes and drawings of new components are required. Otherwise, Yamaha should state which components are to be excluded from this Manual. 90890-01274 (1) 90890-01275 (2) 90890-01278 (3)Tool for Drive Shaft Installation Drive Shaft Pin Adaptor (M12) (*) 90890-01326T-t oo l The T-tool is used to hold the shock absorber rod when it is removed or installed. (*) 90890-01367 (*) 90890-01381Fork Clamp Fork Clamp Fitting The fork clamp fitting is used to install the fork cross. (*) 90890-01403Nut Ring Wrench This wrench is used to loosen and tighten the nut ring of the handlebar. 90890-03112Pocket Tester The pocket tester is required to check the electrical system. Component N.DescriptionPicture
9 IDM C144600300.fm TECHNICAL SPECIFICATIONSSPEC TECHNICAL SPECIFICATIONS GENERAL FEATURES ModelXT 125RXT 125X Dimensions: Overall Length2110 mm2040 mm Overall Width860 mm860 mm Overall Height1130 mm1090 mm Saddle Height860 mm830 mm Pitch1340 mm1340 mm Min. Distance from the Ground300 mm271 mm Min. Turning Radius 2100 mm2016 mm Net Weight: Oil and Fuel Included120 kg120 kg Engine: Type of Engine:4-stroke, air-cooling Feeding SystemCarburettor Cylinder ArrangementTilted forward, single-cylinder Displacement123.7 cm3 Diameter per Stroke54.0x54.0 Compression Ratio10:1 ±0.5 Max. Power7.3 kW / 8500 RPM Max. Torque9.5 N *m / 5500 RPM Min. Speed1600~1800 RPM Starting SystemElectrical and manual starter Lubrication SystemYamaha Autolube Oil Type or Grade: Motor OilYAMALUBE 4, SAE 10W30/SH or equivalent Total Quantity1.2 L Scheduled Oil Change1.0 L Air Filter:Humid-element type Fuel: TypeUnleaded Fuel Tank: Capacity10 L Low Fuel2.0 L
10 IDM C144600300.fm TECHNICAL SPECIFICATIONSSPEC Carburettor: Type/QuantityVM20SS ManufacturerMIKUNI Spark Plugs: TypeCR7HSA ManufacturerNGK Distance between Electrodes0.6 mm (0.0236 in) Type of Clutch:Oil-bath, multiple disc Gear: Primary Step-down SystemWorm gear Primary Step-down Ratio68/20 (1/3,4) Secondary Step-down RatioDrive chain Secondary Step-down Ratio50/14 (3.5715)48/14 (3.4286) Type of GearContinuous gear, 5-speed OperationLeft foot Drive Ratio: First Gear14/37 (2.64) Second Gear18/32 (1.78) Third Gear19/25 (1.32) Fourth Gear22/23 (1.05) Fifth Gear24/21 (0.88) Frame: Type of FrameSemi double cradleSemi double cradle Front Axle Angle28°26.7° Angle Base114.4 mm78.33 mm Tyres: TypeWith inner tubeWith inner tube Front90/90-21 54S100/80-17 52S Rear120/80-18 62S130/70-17 62S Pressure with Cold Wheels: Front 0~90kg1.8 bars (26.1 psi) Rear 0~90kg1.9 bars (27.6 psi) Front 90~178kg2.0 bars (29.0 psi) Rear 90~178kg2.1 bars (30.5 psi) ModelXT 125RXT 125X