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Yamaha WR45OFR service manual Eng

Models: WR45OFR

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Page 193

KICK AXLE AND SHIFT SHAFT

ENG

Extent of removal				Order	Part name	Q’ty		Remarks

				13	Roller	1
				13	Roller	1
				14	Shift guide	1		Refer to “REMOVAL POINTS”.
				14	Shift guide	1
				15	Shift lever assembly	1
				15	Shift lever assembly	1
				16	Shift lever	1
				17	Pawl	2
				18	Pawl pin	2
	4			18	Pawl pin	2
				19	Spring	2
				20	Bolt (stopper lever)	1
				21	Stopper lever	1
				22	Torsion spring	1
				23	Segment	1		Refer to “REMOVAL POINTS”.

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Image 193

Yamaha WR45OFR service manual Eng

Contents

WR450FR Page By Yamaha Motor Corporation, U.S.A 1st Edition, October WR450FRLIT-11626-16-43 Introduction Page Always Maintain Your Machine in Proper Working Order Always Wear Protective ApparelPark the Machine Carefully Turn OFF the Engine Gasoline can Cause InjuryProperly Secure the Machine Before Transporting IT Weights of machines without fuel M. Machine WeightsFinding the Required Particularly Important InformationManual Format HOW to Read DescriptionsGEN Spec Info Insp ENG ADJ Memo Index Chapter Regular Inspection Adjustments Front Wheel and Rear Wheel Front Brake and Rear Brake SEAT, Fuel Tank Side CoversTPS Throttle Position Sensor Electrical ComponentsDescription Description InfoVehicle Identification Number Machine IdentificationEngine Serial Number Model LabelImportant Information Preparation for Removal and DisassemblyLock WASHERS/PLATES and Cotter Pins ALL Replacement PartsGASKETS, OIL Seals and O-RINGS Bearings and OIL SealsCirclips Checking of Connection Special Tools Part number Tool name/How to use IllustrationGEN Info ACC-QUICK-GS-KT Main switch indicator light Main SwitchStart Switch Control FunctionsShift Pedal Clutch LeverKickstarter Throttle GripFuel Cock Rear Brake PedalCold Starter Knob HOT Starter LeverValve Joint Lights SwitchSpark Plug Wrench Nipple WrenchFuel Starting and BREAK-IN AIR Filter MaintenanceStarting a Cold Engine Do not warm up the engine for extended periods of time Restarting an engine after a fall Starting a Warm EngineEngine fails to start Cylinder and Crankshaft BREAK-IN ProceduresAbout one hour of break-in operation is necessary PISTON, RING, VALVES, Camshafts and GearsTORQUE-CHECK Points Cleaning Cleaning and StorageStorage 5TJ4 CDN, AUS, NZ, ZA General SpecificationsFCR MX39 CDI Engine Maintenance SpecificationsSeat Width 7083 ~ 0.7087 7075 Spec USA CDN, AUS, NZ Spec Standard Lubrication chart Part to be tightened Thread size ’ty Tightening torque Oil strainer frame USA, CDN Europe AUS, NZ, ZA ChassisDID520VM/DAIDO Handle crown and outer tube Rear wheel axle and nut M4 ⋅ 5TA-00/DENSO ElectricalACM33221 M06/MATSUSHITA Definition of Units General Torque SpecificationsTorque Mkg Ftlb 10 mm 12 mm 14 mm 17 mm 19 mm 22 mm 16 mm 130Lubrication Diagrams Spec Cable Routing Diagram Spec Spec Spec Spec Spec Insp ADJ Maintenance IntervalsShift FORK, Shift CAM, Guide BAR Marked For USA General Inspection and Maintenance PRE-OPERATION Inspection and MaintenanceDo not remove the radiator cap when the engine is hot Coolant ReplacementEngine Coolant Level InspectionCoolant Replacement Fill Radiator Engine To specified level Radiator CAP Opening Pressure Inspection Radiator CAP InspectionRadiator cap opening pressure 110 kPa 1.1 kg/cm2, 15.6 psi Cooling System Inspection Cooling System InspectionStandard pressure KPa 1.8 kg/cm2, 25.6 psi Throttle Cable Adjustment Clutch AdjustmentHot starter lever free play adjustment steps HOT Starter Lever AdjustmentThrottle Lubrication Hot starter lever free play a 3 ~ 6 mm 0.12 ~ 0.24AIR Filter Cleaning AIR Filter CleaningInsp ADJ Engine OIL Level Inspection Engine OIL Level InspectionRecommended oil When the oil tank is empty, never start the engineRecommended engine oil classi- fication API StandardEngine OIL Replacement Engine OIL ReplacementOil filter cover 10 Nm 1.0 m kg, 7.2 ft lb Replacement stepsPilot Screw Adjustment Pilot Screw AdjustmentAdjustment steps Idle Speed AdjustmentValve Clearance Adjustment Valve Clearance Adjustment Mm increments Pad range Pad Availability Increments 20 mm40 mm Example Last digit of pad Rounded valueBolt camshaft cap 10 Nm 1.0 m kg, 7.2 ft lb Insp ADJ Exhaust IntakeSpark Arrester Cleaning For USA Chassis CHASSIS/BRAKE System AIR BleedingBrake System AIR Bleeding Front Brake Adjustment Front Brake AdjustmentBrake lever position adjustment steps Locknut Nm 0.5 m kg, 3.6 ft lbFront Brake PAD Inspection and Replacement Rear Brake AdjustmentDo not reuse the drained brake fluid Front Brake PAD Inspection and ReplacementBleed screw Nm 0.6 m kg, 4.3 ft lb Rear Brake PAD Inspection and Replacement Rear Brake PAD Inspection and ReplacementPad pin plug Nm 0.3 m kg, 2.2 ft lb Brake pad thickness a Standard Limit Mm 0.25 Mm 0.04Pad pin 18 Nm 1.8 m kg, 13 ft lb Brake Fluid Level Inspection Rear Brake PAD Insulator InspectionSprockets Inspection Sprockets INSPECTION/DRIVE Chain InspectionDrive Chain Inspection Drive chain length 10 links Limit 150.1 mm 5.91Drive Chain Inspection Drive Chain Slack Adjustment Drive Chain Slack AdjustmentDrive chain slack adjustment steps Drive chain slack 40 ~ 50 mm 1.6 ~ 2.0Axle nut 125 Nm 12.5 m kg, 90 ft lb Front Fork OIL Seal and Dust Seal CleaningLocknut 16 Nm 1.6 m kg, 11 ft lb Front Fork InspectionFront Fork Internal Pressure Relieving Front Fork Rebound Damping Force AdjustmentStandard position 10 clicks out Clicks out Front Fork Compression Damping Force AdjustmentRear Shock Absorber Inspection Rear Shock Absorber Inspection246 mm 9.69 240.5 ~ 258.5 mm Rear Shock Absorber Spring Preload Adjustment47 ~ 10.18 Standard position About 9 clicks out *About 10 clicks out Rear Shock Absorber Rebound Damping Force AdjustmentStandard position About 6 clicks out *About 13 clicks out Rear Shock Absorber LOW Compression Damping Force AdjustmentEC36d000 Standard tire pressure KPa 1.0 kgf/cm2, 15 psi Tire Pressure CheckSpokes Inspection and Tightening Wheel InspectionSteering Head Inspection Adjustment Steering Head Inspection and AdjustmentSteering ring nut adjustment steps Ring nut wrench YU-33975/90890-01403Cautio N Lubrication LubricationElectrical ELECTRICAL/SPARK Plug InspectionSpark Plug Inspection Spark plug gap ~ 0.8 mm 0.028 ~ 0.031Ignition Timing Check Ignition Timing CheckBattery Inspection and Charging Battery Inspection and ChargingKeep Batteries and Electrolyte OUT of Reach of Children First AID in Case of Bodily Contact ExternalMeasurement steps Example Do not quick charge a batteryInsp ADJ Charging method using a variable voltage charger Charging method using a constant voltage charger First, connect the positive lead 1, then the negative lead Fuse InspectionRecommended lubricant Lithium soap base grease Fuse InspectionItems Amperage ’ty Rating Replacing the Headlight BulbsReplacing the Headlight Bulbs Adjusting the Headlight Beams Adjusting the Headlight BeamsSEAT, Fuel Tank and Side Covers Removal SEAT, Fuel Tank and Side CoversSide cover Removal PointsExhaust Pipe Silencer Removal Exhaust Pipe and SilencerExhaust pipe and silencer Assembly and Installation Exhaust pipe and silencerRadiator Removal RadiatorHandling Note Assembly and Installation RadiatorRadiator Install Radiator breather hose Radiator right Carburetor Removal CarburetorCarburetor Disassembly Carburetor DisassemblyENG Carburetor Pilot screwThrottle valve Needle valveJet needle Standard clip position No.4 GrooveFloat Measurement and adjustment stepsStarter plunger Accelerator pump Assembly and Installation CarburetorAir cut valve ENG ENG Pilot screw 4 turns out example 2 turns out example ENG Carburetor installation Accelerator pump timing adjustment Adjustment stepsCarburetor ENG Throttle valve height Mm 0.122Tighten Screw air cleaner joint Cylinder Head Cover CamshaftsCylinder Head Cover Removal Camshafts Removal Camshaft Runout camshaft Less than 0.03 mm 0.0012 Bolt camshaft cap 10 Nm 1.0 m kg, 7.2 ft lb Installation steps Assembly and InstallationDecompression system Timing chain tensionerBolt camshaft cap CA U TI onBolt timing chain tensioner Camshafts ENGTensioner cap bolt Cylinder Head Removal Cylinder HeadCylinder head Bolts cylinder head 1st 30 Nm 3.0 m kg, 22 ft lb 2nd Bolts cylinder head20 Nm 2.0 m kg, 14 ft lb FinalValves and Valve Springs Removal Valves and Valve SpringsValve spring compressor YM-4019/90890-04019 Valve ENG Runout limit 01 mm 0.0004 Lapping steps Valve spring Combination Cylinder head mark Valve lifter mark Color Combination of cylinder head and valve lifterYellow BlackCA UT ION Cylinder and Piston Removal Cylinder and PistonPiston pin puller YU-1304/90890-01304 PistonDo not use a hammer to drive the piston pin out Piston ring Cylinder and piston05 mm 0.002 Cylinder bore C 95.00 ~ 95.01 mm 7402 ~ 3.74062nd step Piston size P StandardEnd gap Standard Limit 2nd ring 020 ~ 0.055 mm 12 mm 0008 ~ 0.002220 ~ 0.50 mm 01 ~ 0.02 Inside diameter piston 18.004 ~ 18.015 mm 0.7088 ~ 0.7093 Piston pinCylinder Clutch Removal ClutchENG Clutch boss Clutch housing and bossClutch holding tool YM-91042/90890-04086 Primary driven gearClutch plate Friction plateWarp limit Mm 0.004 Push lever Push rodClutch Assembly and Installation Push leverENG Install Clutch spring Bolt clutch spring OIL FILTER, Water Pump and Crankcase Cover Right OIL FILTER, Water Pump and Crankcase Cover RightOIL FILTER, Water Pump Crankcase Cover Right Removal ENG Oil seal Impeller shaftBearing Crankcase cover right Kick crank Water pump housingOil filter Balancer Removal BalancerBalancer Balancer drive gear and balancer driven gearBalancer, balancer drive gear and balancer driven gear OIL Pump OIL Pump Removal and DIS AssemblyENG Oil pump Assembly and Installation Oil pumpBolt oil pump assembly L = 25 mm 0.98 Kick Axle and Shift Shaft Removal Kick Axle and Shift ShaftENG Shift guide and shift lever assembly Kick axle assemblySegment Kick axle and ratchet wheelShift shaft Assembly and Installation SegmentStopper lever Install Torsion spring Stopper lever Bolt stopper lever EC4C5301 Kick idle gear AC Magneto and Stator Removal AC Magneto and Starter ClutchENG Rotor puller YM-04141/90890-04141 RotorAC magneto Woodruff keyStarter clutch Assembly and Installation AC magneto and starter clutchQuick gasket ACC-QUICK-GS-KT Yamaha Bond No 90890-85505 Install Bolt starter clutch Install Engine guard Clamp Bolt engine guard front Engine Removal Engine RemovalENG ENG Engine removal Drive sprocketBrake pedal Assembly and Installation Engine installationInstall Ring 1 New Dowel pin Oil hose Bolt oil hose Crankcase Separation Crankcase and CrankshaftENG Crankcase Bearing Removal Crankcase BearingSeparation steps CrankcaseCrankcase separating tool YU-1135-A/90890-01135 CrankshaftTiming chain and timing chain guide Oil delivery pipe Assembly and Installation Crankshaft bearing Quick gasket ACC-QUICK-GS-KT Yamaha Bond No Do not use a hammer to drive in the crank- shaftBolt crankcase TRANSMISSION, Shift CAM and Shift Fork TRANSMISSION, Shift CAM and Shift ForkTRANSMISSION, Shift CAM Shift Fork Removal Gears Shift fork, shaft cam and transmissionShift fork, shift cam and segment Assembly and Installation TransmissionENG ENG Front Wheel and Rear Wheel Front Wheel and Rear Wheel ChasFront Wheel Front Wheel RemovalRear Wheel Removal Rear WheelWheel bearing if necessary Rear wheelWheel Wheel axle bending limit 0.5 mm 0.020 Wheel axleDo not attempt to straighten a bent axle Brake discFront wheel Caacuhtutionng105 Nm 10.5 m · kg, 75 ft · lb Tighten Bolt axle holder Tighten the nuts in stage, using a crisscross pattern Front Wheel and Rear Wheel Chas Adjust Drive chain slack a Front Brake and Rear Brake Front Brake and Rear Brake ChasFront Brake Front Brake RemovalRear Brake Removal Rear BrakeCaliper Disassembly Caliper DisassemblyMaster Cylinder Disas Sembly Master Cylinder DisassemblyCaliper piston Brake fluidMaster cylinder Piston seal kitUse only new brake fluid Brake hose CaliperFront caliper Always use new piston seals and dust sealsRear caliper Always use new copper washersMaster cylinder kit Front master cylinder Rear master cylinder CaauchtutionngFront brake hose Cauachttuniong Install Brake hose holder Screw brake hose holder Rear Diaphragm Master cylinder cap Bolt master cylinder cap Front Fork Front Fork ChasFront Fork Removal Front Fork Disassembly Front Fork DisassemblyCap bolt Take care not to scratch the inner tube Inner tubeOil seal removal steps Damper rodFork spring Base valveInner tube bending limit 0.2 mm 0.008 Outer tubeAssembly and Installation Front fork assembly Front Fork Chas Fork seal driver YM-01442/90890-01442 Recommended oil Suspension oil Front Fork Chas Front Fork Chas Front fork top end standard a Zero mm Zero InstallationTighten Pinch bolt handle crown Handlebar Handlebar ChasHandlebar Removal Handlebar GripAssembly and Installation Handlebar Install Cover grip cap Cover throttle cable cap Hot starter lever holder Bolt hot starter lever holder Handlebar Chas Steering Steering ChasSteering Removal Steering Chas Bearing lower Ring nutTake care not to damage the steering shaft thread Ball raceUnder bracket Bearing and ball raceInstall Plain washer Ring nut Install Trip meter Bolt trip meter Swingarm Swingarm ChasSwingarm Removal Swingarm Disassembly Swingarm DisassemblyRelay arm SwingarmBearing and oil seal Connecting rodInstalled depth of bearings a 5 mm 0.20 Swingarm Installed depth of bearings a 5 mm 0.2080 Nm 8.0 m · kg, 58 ft · lb Tighten Nut relay arm Bolt support cover r= 10 mm 0.39 Rear Shock Absorber Rear Shock Absorber ChasRear Shock Absorber Removal Rear Shock Absorber Chas Rear Shock Absorber Chas EC586000 Rear shock absorber Spring rear shock absorber Installed depth of the bearing a 4 mm 0.16Adjustment Spring length installed a Standard ExtentBolt rear frame lower Rear Shock Absorber Chas Wiring Diagram Electrical Components and Wiring DiagramColor Code Function of Component MAP-CONTROLLED CDI UnitInspection Steps Ignition SystemSpark GAP Test Ignition System Elec +COUPLERS, Leads and Ignition Coil Connection Inspection Engine Stop Button InspectionOFF Main Switch InspectionIgnition Coil Inspection AC Magneto Inspection Neutral Switch InspectionCDI Unit Inspection Starting Circuit CUT-OFF System Operation Electric Starting SystemInspection Steps Starter Motor Operation Couplers and Leads Connection InspectionStarting Circuit CUT-OFF Relay Inspection Tor positionStarter Relay Inspection Clutch Switch InspectionPull Free Start Switch Inspection Remove the diode from wire harnessElectric Starting System Elec + Diode InspectionStarter Motor Removal Starter MotorStarter Motor Disassem BLY Elec Min. commutator diameter 16.6 mm 0.65 Inspection and RepairMica undercut 1.5 mm 0.06 Be careful not to damage the brush during installation AssemblyMin. brush length Mm 0.14 New Charging System Tester + lead → Red lead Tester lead → Black lead Charging Voltage InspectionDCV-20 000 r/minTPS Throttle Position Sensor System TPS Coil Inspection TPS Throttle Position Sensor System Elec +Tester + lead → Yellow lead Tester lead → Black lead TPS Replacement and AdjustmentDCV 58 ~ 0.78Tester + lead → Blue lead 1 Tester lead → Black/Blue lead TPS Input Voltage Inspection~ 6 DCV-20 Lighting System Tester + lead → Yellow lead Tester lead → Blue lead Lights Switch InspectionNo continuous while being → Replace RECTIFIER/REGULATOR InspectionCarburetor setting SettingHumidity Effects of the setting parts on the throttle valve opening Setting T U NMain system Pilot system Main jet adjustmentStandard main jet #150 #160 Effects of changing the main jet referenceEffects of adjusting the pilot screw reference Pilot screw adjustmentStandard pilot Screw position Example Effects of adjusting the pilot jet reference Pilot jet adjustmentJet needle groove position adjustment Standard pilot jet #45 #48Standard jet needle Jet needle adjustmentObdut Obduq Effects of changing the jet needle reference#DUS STD#DUV #DUWExamples of carburetor setting depending on symptom Standard secondary reduction ratio 50/14 Selection of the secondary reduction ratio Sprocket9383E-14215 5NG-17460-00For CDN, EUROPE, AUS, NZ and ZA Size Part numberChange in level and characteristics of fork oil Front fork settingSetting of spring after replacement Spring preload adjustmentSetting Spring Part NumberMark RateChoosing set length Rear suspension settingStandard ﬁgure 90 ~ 100 mm 3.5 ~ 3.9 EC72G001 Setting Adjustment b Rear shock absorber setting partsSpring Free Extent Suspension setting One passenger is astride seat Printed on Recycled Paper Shingai Iwata Shizuoka Japan