Troy-Bilt 643D manual Forward Clutch Bail Adjustment, Models 643B & 645A only

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WARNING: Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug. Failure to follow these instructions can result in serious personal injury or property damage.

FORWARD CLUTCH

BAIL ADJUSTMENT

If the Forward Clutch Bail does not func- tion properly, first check that the forward drive belt is adjusted properly (see Check- ing and Adjusting Forward Drive Belt Ten- sion). If this fails to correct the problem, contact Troy-Bilt LLC or your authorized dealer for service advice.

CHECKING AND ADJUSTING RE- VERSE DRIVE BELT TENSION

(Models 643B & 645A only)

It is important to maintain correct tension on the reverse drive belt. A loose belt will cause the tines and wheels to slow down – or stop completely – even though the en- gine is running at full speed.

When checking belt tension, also check the belt for cracks, cuts or frayed edges and replace it as soon as possible.

•Check belt tension after the first two hours of break-in operation and after every 10 operating hours.

To Check Reverse Belt Tension:

1.Stop engine, wait for all parts to stop moving and disconnect spark plug wire.

2.Remove screw in plastic belt cover and slide belt cover (which is attached to for- ward clutch cable) out of the way.

3.Have an assistant pull the Reverse Clutch Control knob all the way out and hold it in that position. Measure the length of the cable wire between the end of the threaded cable adjuster (A, Figure 5-5) and the end of the Z-fitting (B) to which the ca- ble wire is attached.

4.The belt tension is ideal if the cable wire length measures between 1/8" to 1/4". If it is less than 1/8" (and if there is no reverse ac- tion when the tiller is running), then make the following adjustments

NOTE: If the length is more than 1/4", no ad- justment is needed—as long as the reverse action functions properly.

5.Release the Reverse Clutch Control knob.and then unthread the inner jam nut (C, Figure 5-6) one to two turns. Pull the threaded cable adjuster (A, Figure 5-6) to the left until the inner jam nut (C) touches the bracket.

6.Prevent the inner jam nut (C) from turn- ing and tighten the outer jam nut (D) against the bracket. Prevent the outer jam nut (D) from turning and tighten the inner jam nut (C) against the bracket.

7.Measure the gap by repeating Step 3. Readjust as needed by repeating Steps 5 and 6.

8.Reinstall the belt cover.

A B

Figure 5-5: Measure cable wire length to check for correct reverse belt tension.

D C A

Figure 5-6: Move threaded adjuster (A) to left to increase belt tension.

Replacement Belt Information

If the drive belt needs to be replaced, see your local authorized dealer or refer to the Parts List for ordering information. Use only a factory-authorized belt as an “over- the-counter” belt may not perform satis- factorily. The procedure requires average mechanical ability and commonly available tools.

ENGINE CLEANING

Keeping the engine clean will help to en- sure smooth operation and prevent dam- age from overheating. Refer to the Engine Owner’s Manual for engine cleaning ser- vice intervals and instructions. Be sure that the muffler is cool before servicing the engine.

AIR CLEANER SERVICE

The air cleaner filters dirt and dust out of the air before it enters the carburetor. Op- erating the engine with a dirty, clogged air filter can cause poor performance and damage to the engine. Never operate the engine without the air cleaner installed. In- spect and service the air cleaner more of- ten if operating in very dusty or dirty conditions. Refer to the engine Owner’s Manual for air cleaner service intervals and instructions.

ENGINE OIL SERVICE

Check the engine oil level before each use and after every five hours of continuous operation. Running the engine when it is low on oil will quickly ruin the engine.

It is recommended that you change the motor oil after every 10 hours of operation and even sooner when operating in ex- tremely dirty or dusty conditions. Refer to the Engine Owner’s Manual for detailed service instructions.

A. To Check the Engine Oil Level:

1.Park the tiller on a level area and shut off the engine.

2.Level the engine (use the Depth Regula- tor Lever to adjust the engine angle).

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Contents Form no -00585E.fm 11/11/05Customer Support Table of ContentsFinding Model Number Safety Alert Symbol Do not put hands or feet near or under rotating partsRefer to the Maintenance sections Keep children and pets awayStarting the engine or engaging Use slower engine speedsOperating Symbols DecalsAssembly Assembly StepsIntroduction Inspect UnitInstall Forward Clutch Cable Use the handlebar to roll the tiller to a flat areaWhile preventing the cable adjuster from turning With the Forward Clutch Bail Y, FigCheck Transmission OIL Level Check all nuts and screws for tightnessWheel Drive Pins IntroductionEngine Controls Ature package to identify the controls on your engineHandlebar Height Adjustment Depth Regulator LeverFollowing steps describe how to start and stop the engine Introduction BREAK-IN OperationStarting and Stopping Change engine oilFor forward motion of the wheels and power to the tines Operating the TillerStopping the Engine and Tiller To move the Model 643C in reverse for short distancesTilling Tips & Techniques Tilling Tips & Techniques CON’T Tilling On SlopesClearing the Tines Read the following recommendations before tilling on slopesLoading and Unloading the Tiller Terrace GardeningTransmission Gear OIL Service Tiller LubricationCheck Hardware Check Tire PressureRemoving⁄Installing a Single Tine Removing⁄Installing a Tine AssemblyBolo Tines Tine InspectionChecking and Adjusting Replacement Belt InformationForward To Check Forward Belt TensionForward Clutch Bail Adjustment Engine Cleaning AIR Cleaner Service Engine OIL ServiceModels 643B & 645A only To Check Reverse Belt TensionSpark Plug Service Spark Arrester Screen ServiceOFF-SEASON Storage To Change the Engine OilTroubleshooting Problem Possible Cause CorrectionPage Models 643C, 643B & 645A Models 643C, 643B & 645A GW-1224-3 Front Model 643C Models 643C, 643B & 645A Page Page TROY-BILT Tiller Lifetime Limited Warranty Manual del Operador Formulario N 769-00585ESp.fmÍndice Búsqueda DEL Número DE ModeloAsistencia AL Cliente Índice PáginaSímbolo de alerta de seguridad Lea atentamente esteLlene el tanque de combustible en exteriores con extremo Un embudo o pico para evitar derramesMantenga a los niños y las mascotas alejados La misma en cada pasadaAdvertencia Ctdad. Descripción IntroducciónInspeccione LA Unidad Directa Paso 4 Instale EL CableDEL Embrague DE Marcha Únicamente Modelos 643B Y 645A Controle el ajuste de todas las tuercas y los pernos Paso 6 Verificación del nivel del Aceite DE TransmisiónLa cultivadora se envía sin aceite en el motor Introducción Controles DEL MotorPasador de transmisión de las ruedas Identificar los controles del motorAjuste DE LA Altura DE LA Barra DE Control Funcionamiento Inicial Arranque Y DetenciónCambie el aceite del motor Coloque las ruedas en la posiciónFuncionamiento DE LA Cultivadora Detención del motor y la cultivadoraPara mover el modelo 643C marcha atrás en distancias cortas Los dientes se separen del sueloSugerencias Y Técnicas Para LA Labranza Profundidades Advertencia AntEvite dejar huellas Preparación de losSugerencias Y Técnicas DE Labranza Continuación Labranza enLimpieza de los Labranza cuesta arriba y cuesta abajo labranza verticalCarga Y Descarga DE LA Cultivadora Jardinería en terrazas continuaciónLubricación DE LA Cultivadora Verifique LA Presión DE AireModelos con neumáticos Graves o daños materialesDientes Bolo Para drenar el aceite de engranajes de la transmisiónInspección de los dientes Retiro⁄Instalación de un solo dienteVerificación Y Ajuste Marcha DirectaAvance Marcha directaLimpieza DEL Motor Mantenimiento DEL Filtro DE AireMantenimiento DEL Aceite DE Motor 643B y 645AMantenimiento DEL Filtro Antichispas Ajustes DE ControlAjuste DE LA Palanca DEL Estrangulador Para cambiar el aceite de motorSolución DE Problemas Problema Causa Posible CorrecciónNotas Modelos 643C, 643B y 645A Modelos 643C, 643B Y 645A No. de Pieza 16-18 x 3/4Frente Model 643C Modelos 643C, 643B Y 645A Notas Notas QUÉ Producto
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