Yamaha 5TE-F8197-10, LIT-11616-16-02 service manual Adjusting the Valve Clearance

Page 71

ADJUSTING THE VALVE CLEARANCE

ENGINE

CHK ADJ

ADJUSTING THE VALVE CLEARANCE

NOTE:

●The valve clearance must be adjusted when the engine is cool to the touch.

●Adjust the valve clearance when the piston is at the Top Dead Center (T.D.C.) on the compression stroke.

1.Remove:

●Seat

●Front carrier

●Front fender

●Fuel tank

Refer to “SEAT, CARRIERS, FENDERS AND FUEL TANK”.

2.Remove:

●Tappet cover (intake) 1

●Tappet cover (exhaust) 2 3.Disconnect:

●Spark plug cap 3 4.Remove:

●Spark plug

5.Remove:

●Recoil starter 1

6.Remove:

●Timing plug 1

3 - 10

Page 70 Page 72
Image 71
Page 70 Page 72
Contents YFM400FAR YFM400FAR Important Information Manual Organization Exploded DiagramsGEN Spec Info CHK ENG ADJ Table of Contents Contents Chapter General Information Fuel Tank IntroductionSeat and Side Panels Chapter Engine Page Chapter Cooling System Rear AXLE/FINAL Drive Gear and Drive Shaft TroubleshootingChapter Chassis Front Arms and Front Shock Absorbers Chapter ElectricalStarting FAILURE/HARD Starting Faulty Drive TrainFaulty Gear Shifting Faulty Clutch PerformanceMalfunction Faulty BrakeOverheating Poor Braking EffectModel Label Vehicle Identification NumberGASKETS, OIL Seals and O-RINGS Preparation for Removal ProceduresReplacement Parts Circlips Lock WASHERS/PLATES and Cotter PinsBearings and OIL Seals Checking of Connections Tool No Tool name/How to use Illustration Crankshaft installer set Sheave fixed block Compression gauge Clutch holding tool General Specifications Maxxis MikuniDR8EA/NGK YTX14AH Engine Seat Width Margin Thickness Head Diameter Face Width 41.27 mm Spec Spec Spec Pressure feed Splashed scavenge Camshaft Crank Pin Standard Limit Cylinder head tightening sequence Tightening torques Neutral switch M10 Reverse switch Stator assembly Chassis DOT Tightening torques Spec Electrical 5ND/NIPPON Thermostat MS5F-561/JIDECO4BA/DENSO Conversion Table Metric Multiplier ImperialLubrication Points and Lubricant Types Coolant Flow Diagrams Radiator Thermostat To coolant reservoir OIL Flow Diagrams Oil filter Oil pump Oil strainer Cable Routing Spec Spec Spec Spec Spec Spec Spec Spec Spec Introduction CHK ADJ Removing the seat and side panels Seat and Side PanelsBumper and front fender Front CARRIER, Front Bumper and Front FenderRemoving the front carrier, front CHK ADJ First disconnect the negative lead Rear Carrier and Rear FenderRemoving the rear carrier and rear FenderCHK ADJ Bumper and Front Fender Fuel TankRemoving the fuel tank Removing the footrest boards Adjusting the Valve Clearance Adjusting the Valve Clearance Locknut 20 Nm 2.0 m kg, 14 ft lb Adjustment stepsTappet adjusting tool YM-08035 Engine idling speed 1,450 ~ 1,550 r/min Adjusting the Idling SpeedThrottle lever free play ~ 5 mm 0.12 ~ 0.20 Adjusting the Throttle Lever Free PlayTurning Idling speed becomes Higher Turning out Lower Adjustment steps First step Speed limiter length 12 mm 0.47 Adjusting the Speed LimiterSecond step Adjusting the Starter Cable Speed limiter length adjustment stepsStarter plunger stroke distance 15 mm 0.59 Spark plug gap ~ 0.7 mm 0.024 ~ 0.028 Checking the Spark PlugStandard spark plug DR8EA/NGK Loctite Checking the Ignition TimingEngine speed 1,450 ~ 1,550 r/min Recoil starter bolt 10 Nm 1.0 m kg, 7.2 ft IbCompression gauge YU-33223 Adapter YU-33223-3 Measuring the Compression PressureMeasuring the Compression Pressure Do not allow foreign material to enter the crankcase Recommended oil Follow the left chartChecking the Engine OIL Level Oil filter wrench YU-38411 Replacement stepsChanging the Engine OIL Oil filter cartridge 17 Nm 1.7 m kg, 12 ft lb Cautio NOil gallery bolt Nm 0.7 m kg, 5.1 ft lb Cleaning the AIR FilterCleaning the AIR Filter Cleaning steps Checking the Coolant Level Changing the Coolant 10 Nm 1.0 m kg, 7.2 ft lb CHK ADJ Belt width 30.7 mm 1.21 in Limit 27.6 mm 1.09 Checking the Coolant TemperatureChecking the V-BELT Replacing steps Cleaning the Spark Arrester Rear brake pedal free play 20 ~ 30 mm 0.8 ~ 1.2 Adjusting the Rear BrakeRear brake pedal free play 20 ~ 30 mm 0.80 ~ 1.18 Gap a ~ 1 mm 0.00 ~ 0.04 DOT Checking the Front Brake Fluid LevelRecommended brake fluid Checking the Rear Brake Shoes Checking the Front Brake PadsBrake pad wear limit a 1 mm 0.04 Checking the Brake Hoses Bleed screw Nm 0.6 m kg, 4.3 ft lb Bleeding the Hydraulic Brake SystemAir bleeding steps Adjustment steps Control cable Adjusting the Select Lever Control Cable and Shift RODSelect lever shift rod Adjusting the Rear Brake Light SwitchRecommended oil SAE 80 API GL-4 Hypoid gear oil Direction a Brake light comes on Sooner Direction b LaterChecking the Final Gear OIL Level Changing the Final Gear OIL Changing the Differential Gear OIL Checking the Constant Velocity Joint Dust BootsChecking the Steering System Adjusting the TOE-INLocknut rod end 40 Nm 4.0 m kg, 29 ft lb Toe-in = É ÈChecking the Tires Adjusting the Front Shock AbsorbersAdjusting the Rear Shock Absorber Maximum Loading Limit Tire CharacteristicsManufacturer Size Type MaxxisCold tire Front Rear Checking and Lubricating the Cables Checking the WheelsRecommended lubricant Lithium soap base grease Lubricating the LEVERS, PEDAL, ETCCharging Method Checking the BatteryKeep Batteries and Electrolyte OUT of Reach of Children Battery condition checking stepsExample Open-circuit Charging timeOr higher No charging is Necessary YES Charging method using a variable voltage chargerCharging method using a constant voltage charger Checking the Fuses Quantity Pocket tester YU-03112-CDescription Changing the Headlight Bulb Adjusting the Headlight BeamsChanging the Headlight Bulb Exhaust pipe AIR DUCTS, Muffler and Exhaust PipeRemoving the air ducts, muffler ENG Coolant reservoir Select Lever Unit and Coolant ReservoirRemoving the select lever unit Removing the hoses and leads Hoses and LeadsTighten Them to full torque Install all of the bolts/nuts and thenSpecifications Engine Mounting BoltsENG Installing the Engine Removing the cylinder head Cylinder Head Rotor holding tool YU-01235 Removing the Cylinder HeadChecking the Camshaft Sprocket Checking the Tappet CoversChecking the Timing Chain Tensioner ENG Installing steps Installing the Cylinder HeadCap bolt timing chain tensioner 23 Nm 2.3 m kg, 17 ft lb Installation stepsTighten Camshaft sprocket bolt Valves and Valve Springs Removing the camshaft, rockerArms and valves Camshaft and Rocker ArmsENG Removing the Valves and Valve Springs Slide hammer set YU-01083-A Slide hammer bolt M6 WeightRemoving the Camshaft and Rocker Arms Checking the Rocker Arms and Camshaft Valve spring compressor YM-04019Checking the Camshaft Check Rocker arms Rocker arm shafts Damage/wear → Replace Checking the Valves and Valve Springs Runout limit 01 mm 0.0004 Lapping steps U T IONInstalled length Spring tilt limit Inner 1.6 mm 0.06 in Outer Installing the Valves and Valve SpringsInstalling the Camshaft and Rocker Arms Piston Removing the cylinder and pistonChecking the Timing Chain Guide Removing the PistonPiston pin puller set YU-01304 Do not use a hammer to drive the piston pin out0016 Measurement steps 1st stepCylinder bore C 84.500 ~ 84.510 mm 3268 ~ 3.3272 05 mmStandard Limit Top 03 ~ 0.08 mm 13 mm Ring 3rd stepChecking the Piston Rings Side clearance~ 0.7 mm Ring End gap Standard Limit~ 0.40 mm 65 mm Ring 2nd ~ 0.60 mm 95 mm RingInstalling the Piston Installing the Cylinder Magneto Removing the A.C. magnetoChapter ENG Starter Disassembling the recoil starterAssembling the Recoil Checking the A.C. Magneto Removing the A.C. MagnetoFlywheel puller YM-01404 Disassembling the Recoil StarterBolts starter clutch 30 Nm 3.0 m kg, 22 ft lb Checking the Starter ClutchAssembling the Recoil Starter Checking the Starter PulleyChecking the Recoil Starter Sealant Quick Gasket ACC-11001-05-01 Yamaha bond No Installing the A.C. MagnetoUse a rotor holding tool 2 to hold the starter pulley Sheaves Removing the primarySecondary sheaves Primary and SecondaryFor installation, reverse the removal Sheave Primary Sliding SheaveDisassembling the primary sliding SheaveAssembling the Secondary Secondary SheaveDisassembling the secondary Removing steps Removing the Primary Secondary SheavesSheave holder YS-01880-A Disassembling the Secondary SheaveFree length 121.4 mm 4.78 Limit 115.33 mm 4.54 Weight outside diameter 30 mm 1.18 Limit 29.5 mm 1.16Checking the Primary Sheave Checking the Secondary SheaveAssembling the Secondary Sheave Assembling the Primary SheaveNut 90 Nm 9.0 m kg, 65 ft lb Installing the Primary and Secondary Sheaves Clutch Removing the clutchDisassembling the clutch housing Checking the Clutch Removing the ClutchClutch holding tool YM-91042 Installing the Clutch Install Dowel pins Gasket New Clutch housing assembly OIL Pump Drive Gear Starter MOTOR, Timing Chain and OIL FilterRemoving the starter motor, timing Chain and oil filterENG Lever CrankcaseSeparating the crankcase Pump Crankcase BearingsRemoving the crankcase bearings Separation steps Removing the OIL Pump Drive GearRemoval steps Separating the CrankcaseChecking the OIL Strainer and OIL Delivery Pipe Checking the Timing Chain and GuideAssembling the Crankcase Checking the CrankcaseChecking the Bearings Installing the Shift Lever Tightening steps Installing the OIL Pump Drive GearCrankshaft and Balancer CRANKSHAFT/INSTALLINGRemoving the crankshaft and oil PumpDisassembling the oil pump OIL PumpChecking the OIL Pump Removing the CrankshaftCrankcase separating tool YU-01135-A Crank width 62.95 ~ 63.00 mm 2.4783 ~ 2.4803 Checking the CrankshaftInstalling the Crankshaft and Balancer Removing the transmission ENG Checking the Transmission Checking the Shift ForksDo not attempt to straighten a bent guide bar Checking the Shift CAMChecking the Chain Checking the Secondary Shaft and Driven SprocketInstalling the Transmission Drive and Driven Gear Shims Middle Drive ShaftRemoving the middle drive shaft Removing the middle driven shaft Middle Driven ShaftENG Removing the Middle Driven Shaft Removing the Middle Drive ShaftBearing retainer wrench YM-04128 Universal joint holder YM-04062Checking the Pinion Gears Ring nut wrench YM-38404Middle drive pinion gear shim thickness a = c a b Selecting the Middle Drive and Driven Gear ShimsSelection steps Middle driven pinion gear shim Thickness = d e + f g Hundredths Round value 5, 6Middle drive pinion gear shim Thickness mm ENG Installing the Middle Driven Shaft Tighten the bearing retainer Pinion gear fix clamp YM-04129 Installing the Middle Drive ShaftMeasuring the Middle Gear Backlash Middle gear lash ~ 0.3 mm 0.004 ~ 0.012 Measurement stepsGear lash measurement tool YM-01467 Removing the radiator CoolCool Radiator cap tester YU-24460-01 Adapter YU-33984 Checking the RadiatorInstalling the Radiator Removing the thermostat Checking the Thermostat Installing the ThermostatRemoving the water pump Disassembling the water pump Checking the Water Pump Disassembling the Water PumpAssembling the Water Pump Max. impeller shaft tilt 0.15 mm 0.006Cool Removing the carburetor Carburetor Disassembling the carburetorCarb Checking the Carburetor Disassembling the CarburetorCarb Assembling the Carburetor Float height F.H mm 0.51 Measurement and adjustment stepsFuel level gauge YM-01312-A Adjusting the Fuel LevelFollowing noises may indicate a mechanical defect DrivTroubleshooting Driv YES Troubleshooting chartVelocity joints and differential gear Removing the front constantDriv Constant Velocity Joints Disassembling the constant velocityJoints Differential gear Driv Checking the Constant Velocity Joints Removing the Differential Gear AssemblyAlways use new boot bands Assembling the Front Constant Velocity Joints Molybdenum disulfide grease 40 g 1.4 oz per dust bootChecking the Differential Gear Assembling the Differential Gear Differential gear lash 10 ~ 0.50 mm 0.004 ~ 0.020 Gear lash measurement tool YM-01475Ring gear shim left and right Thickness mm Adjusting differential gear lashReduce shim Increase shimChecking the Differential Gear Operation Rear Axle Gear assembly and drive shaftInstalling Removing the rear axle, final driveDisassembling the final drive gear Drive Roller Bearings Assembling the Final DriveGear Disassembling the Final Drive Gear Removing the Rear AxleReplacing the Final Drive Roller Bearings Hundredths Rounded value 5, 6 Positioning the Final Drive Pinion Gear and Ring GearFinal drive pinion gear shim selection Final drive pinion gear shim thickness a = a bBearing thickness f 11.00 mm Ring gear shim thickness = c + d e + fMeasure/select Ring gear thrust clearance C Ring gear stopper shim selection Ring gear thrust clearance ~ 0.2 mm 0.004 ~ 0.008Thrust washer selection steps Thrust washer Thickness mmChecking the Rear Axle Ring gear stopper clearance adjustmentShim Thickness mm Ring gear stopper clearance 0.30 ~ 0.60 mm 0.012 ~ 0.024Checking the Final Drive Gear Checking the Drive ShaftFinal gear lash ~ 0.2 mm 0.004 ~ 0.008 Measurement and Adjusting the Final Gear LashFinal gear lash measurement Ring gear shim Thickness mm 25 0.30 40 0.45 Thrust washer Final gear lash adjustmentLithium-soap-based grease Installing the Final Drive GearAssembling the Final Drive Gear Nuts Bolts Sealant Quick gasket ACC-11001-05-01 Yamaha bond No.1215Hubs Front WheelsRemoving the front wheels Is no danger of it falling overRemoving the rear wheels Rear WheelsChecking the Wheel Hubs Brake disc maximum deflection 15 mm 0.006 Installing the Wheel HubsInstalling the Wheels Checking the Brake DiscsInstall Nuts wheel Brake Pads Front Brake PadsRemoving the front brake pads Brake pad wear limit 1 mm 0.04 Replacing the Front Brake PadsBrake caliper bleed screw 6 Nm 0.6 m kg, 4.3 ft lb Brake Master Cylinder Front Brake Master CylinderRemoving the front brake master CylinderMaster cylinder Disassembling the front brakeAssembling the Front Brake Master Cylinder Checking the Master CylinderInstalling the Front Brake Master Cylinder Chas Calipers Front Brake CaliperRemoving the front brake calipers Assembling the Front Brake CalipersChecking the Front Brake Calipers Recommended brake component Replacement schedule Brake padsDisassembling the Front Brake Calipers Assembling the Front Brake Calipers Installing the Front Brake CalipersFill Brake reservoir Removing the rear brake lever Removing the rear brake pedal Removing the rear brake drum Chas Removing the Rear Brake Checking the Rear Brake Lithium-soap base grease Installing the Rear BrakeBrake shoe lining thickness limit 2.0 mm 0.08 Brake drum inside diameter limit maximum 161 mm 6.34Bolt brake shoe plate 28 Nm 2.8 m kg, 20 ft lb Bolt camshaft lever Nm 0.9 m kg, 6.5 ft lbChas Removing the handlebar Cylinder AssemblyBrake Switch HandlebarChecking the Handlebar Removing the Rear Brake SwitchInstalling the Handlebar Installing the Rear Brake LeverInstalling the Master Cylinder Assembly Guide Steering StemRemoving the steering stem Bearing Retainer Checking the Steering Stem Installing the Bearing RetainerInstalling the Cable Guide Removing the Bearing RetainerKnuckles TIE Rods and Steering KnucklesRemoving the tie rods and steering KnucklesChas Checking the Steering Knuckles Removing the Steering KnucklesChecking the TIE Rods Chas Eye protection is recommended when using striking tools Installing the TIE Rods Shock absorbers Removing the front arms and frontAbsorber Arms and Front ShockChecking the Front Arms Removing the Front ArmsReplacement steps Checking the Front Shock Absorber Nut 30 Nm 3.0 m kg, 22 ft lb Installing the Front Arms and Front Shock AbsorberNut 45 Nm 4.5 m kg, 32 ft lb Swingarm Removing the rear shock absorberSwingarm HousingChecking the Rear Shock Absorber Removing the SwingarmNut swingarm 82 Nm 8.2 m kg, 59 ft lb Checking the Swingarm Checking the Rubber BootInstalling the Rubber Boot Nut 63 Nm 6.3 m kg, 45 ft lb Loctite Bolt Loctite Nut Installing the Rear Axle HousingElectrical Components Elec Example chart shows that Checking a SwitchChecking a Switch Shown in the Manual Elec + Checking the Switch Continuity Elec Checking the Condition of the Bulbs Types of BulbsPocket tester YU-03112-C Checking the Condition of the Bulb Sockets Circuit Diagram Standard spark plug TroubleshootingProcedure Open-circuit voltage Or more at 20 C 68 FSpark plug cap resistance 10 kΩ at 20 C 68 F Spark plug gapMinimum spark gap 6.0 mm 0.24 Primary coil resistance 18 ~ 0.28 Ω at 20 C 68 F Both Meet SpecificationCorrect OUT of Specification C0NTINUITYMain switch Refer to Checking the Switches Properly connect the ignition system Replace the CDI unit Correct Poor ConnectionSystem Electric Starting System Elec If the Starter Motor Fails to Operate Does not Turn TurnsIncorrect Correct Motor Starter MotorRemoving the starter motor Disassembling the starter motorMica undercut 0.7 mm 0.03 Checking the Starter MotorOutside diameter 28 mm 1.10 Wear limit 27 mm 1.06 Assembling the Starter Motor Brush length 12.5 mm 0.49 Wear limit 5 mm 0.20Charging Continuity No Continuity If the Battery is not ChargedCharging voltage Meets SpecificationOUT Specification OUT of SpecificationHeadlight fuse If the Headlight AND/OR Taillight Fail to Come on Correct Incorrect Checking the Lighting System Tester + lead → Blue lead 1 Tester lead → Black lead Meets Specification No ContinuityTester + lead → Blue terminal 1 Tester lead → Black terminal Elec Elec Elec EB806010 Properly connect the signal system Checking the Signal System If the neutral indicator light fails to come on If the reverse indicator light fails to come on 235.4 F Test Coolant temperature Thermo switch Continuity StepLess than 120 ± 3 C 248 ± 5.4 F BAD Condition Good ConditionCorrect OUT of Specification Meets System CoolingIf the FAN Motor does not Move Circuit breaker resistance Zero Ω at 20 C 68 F Meets Specification Does not TurnGood Less than 86 ± 3 C 186.8 ± 5.4 F176 ± 5.4 F Properly connect the cooling system System If the Gear Motor Fails to Operate Replace the on-command four-wheel drive switch Correct Poor Connection Electrical System Fuel SystemPoor Medium and HIGH-SPEED Performance Compression SystemFaulty Drive Train Engine Operates but Machine will not Move Hard ShiftingShift Lever does not Move Jumps OUT of GearPoor Braking Effect Poor Speed PerformanceOverheating Bulb Burnt OUT MalfunctionUnstable Handling Headlight DarkYFM400FAR Wiring Diagram Shingai Iwata Shizuoka Japan
Top Page Image Contents