Bolens 643C, 643B, 645A warranty To operate the Forward Clutch Bail, Depth Regulator Lever

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Features

and

Controls

WARNING

Do not attempt to till too deeply too quickly. Gradually work down to deeper tilling depths.

Place the Depth Regulator Lever in the “travel” position before starting the engine. This position prevents the tines from touching the ground until you are ready to begin tilling.

Failure to follow this warning could result in personal injury or property damage.

See your engine manual packaged with your unit for detailed instructions pertaining to starting the engine.

3.Remove Klick Pin (A, Figures 3-2 and 3-3) from wheel drive shaft (B).

4.FOR WHEEL DRIVE MODE (Figure 3-2): Slide wheel outward and align holes in wheel hub (D, Figure 3-2) and wheel shaft (B). Insert Klik pin (A) through wheel hub (C) and wheel shaft (B). Repeat with the other wheel and then remove the support from beneath the transmission.

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Figure 3-2: WHEEL DRIVE position.

5.FOR FREEWHEEL MODE (Figure 3-3): Slide the wheel inward and insert the Klik pin (A, Figure 3-3) only through the hole in the wheel shaft (B). Repeat for the other wheel and then remove the support from beneath the transmission.

WARNING: Before starting engine, be sure that both wheels are in WHEEL DRIVE position. See Wheels Drive Pins for instructions.

Engaging the Forward Clutch Bail or Reverse Clutch Control (if equipped) when the wheels are not in WHEEL DRIVE could allow the tines to rapidly propel the tiller forward or backward.

Failure to comply could cause loss of tiller control, property damage, or personal injury.

FORWARD CLUTCH BAIL

The Forward Clutch Bail (D, Figure 3-4) controls the engagement of forward drive to the wheels and tines.

To operate the Forward Clutch Bail:

1.Put wheels in WHEEL DRIVE position (see “WARN- ING” statement above).

2.Lift and hold the clutch bail (D, Figure 3-4) against the handlebar to start the wheels and tines rotating in a forward direction.

3.Release the clutch bail to disengage (stop) the wheels and tines (the engine will continue to run).

REVERSE CLUTCH CONTROL (Models 643B & 645A only)

The Reverse Clutch Control (E, Figure 3-4) controls the engagement of reverse drive to the wheels and tines. The reversing feature is used for maneuvering the tiller only — never engage the tines in the ground while operating in reverse.

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Figure 3-3: FREEWHEEL position.

WARNING: Use extreme caution when reversing or pulling the machine towards you. Look behind to avoid obstacles.

Never attempt to till in reverse.

Failure to follow this warning could result in personal injury or property damage.

To operate the Reverse Clutch Control:

1.Put wheels in WHEEL DRIVE position (see “WARN- ING” statement at the left).

2.Stop all tiller motion by releasing the Forward Clutch Bail.

3.Lift the handlebar until the tines clear the ground, look behind you to avoid any obstacles, and then pull the control knob (E, Figure 3-4) out. The wheels and tines will rotate in a reverse direction.

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Figure 3-4: All models have a Forward Clutch Bail (E). Only Model 634A have a Reverse Clutch Control (F).

4.Release the control knob to disengage (stop) the wheels and tines (the engine will continue to run).

DEPTH REGULATOR LEVER

This lever (F, Figure 3-5) controls the tilling depth of the tines. Pull the lever back and slide it up or down to engage the notched height settings.

The “travel position” (highest notch) raises the tines approximately 1-1/2” off the ground, allowing the tiller to be moved without the tines contacting the ground. This setting should also be used when starting the engine.

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Contents 772C0845 02/24/2006Table of Contents Operation TrainingPreparation Heed ITS WarningMaintenance & Storage Never pick up or carry machine while the engine is runningLoose Parts List AssemblyAssembly Steps IntroductionMove Tiller OFF Crate Outside of the handle- bar assemblyImportant The support brackets must be assembled to Wheel shaft LThread the screw V into the cable adjuster Install Forward Clutch CableThread the #10-24 hex nut Z, Fig Check Hardware Check Transmission OIL LevelADD Motor OIL Check all nuts and screws for tightnessIntroduction Features ControlsWheel Drive Pins Engine ControlsDepth Regulator Lever Forward Clutch BailTo operate the Forward Clutch Bail Reverse Clutch Control Models 643B & 645A onlyHandlebar Height Adjustment To adjust the handlebarsIntroduction BREAK-IN Operation Pre-Start ChecklistFeatures and Controls Starting and StoppingOperating the Tiller Release all controls on the tillerStopping the Engine and Tiller Reduces tractionFreewheel Stopping the Tiller and EngineTilling Up and Down Slopes Vertical Tilling Read the following recommendations before tilling on slopesAvoid Tilling Soggy, Wet Soil Terrace Gardening Loading and Unloading the TillerCheck for OIL Leaks Maintenance Schedule ProcedureTiller Lubrication Check HardwareTransmission Gear OIL Service Bolo TinesRemoving/Installing a Tine Assembly You have good footing. Never permit tillerDrive Belt Tension Models 643B & 645A Replacement Belt InformationOnly To Check Reverse Belt TensionOFF-SEASON Storage Engine Cleaning AIR Cleaner Service Engine OIL ServiceSpark Plug Service To Check the Engine Oil LevelTrouble Shooting Warranty Page Adressez-vous au «Service après-vente» Parts List Pièces DétachéesLa page 2 pour ce qui concerne les pièces et/ou accessoires Use as required to obtain between Part Description RÉF Pièce Page Part Description RÉF Pièce For parts and/or accessories refer to customer support on Page Garantie Juridictions les selonDépannage Lles -ÉTINCE-PARE L’ÉCRAN DE Entretien Bougie LA DE EntretienTeur -CARBURATEUR/RÉGULA DU Réglages Moteur à l’huile changer Pour .BMoteur DU Nettoyage Moteur À L’HUILE DE VidangeAIR À Filtre DU Entretien Intérieur blocage de l’écrou serrez et tourner deTEN LA DE Réglage ET Vérification Seulement 645A et 643B Modèles ArrièreMarche LA DE Courroie LA DE Sion Avant Marche LADents AvantBolo Dents ArbreMission Pas ne pour niveau le fréquemment VérifiezFond Trans LA DE Engrenages Pour HuileEntretien Utilisation Motoculteur DU Déchargement ET ChargementSauf déconseillons Dents des NettoyageCorporelles blessures Risques des présenterTerre la pulvériser DétrempéeTerre une travailler de Évitez Motoculteur, du contrôle de perte la Corporelles Blessures des et matériels dégâts desLes laissez et travaillant en détendu Soyez .b Profondeur en plus dents les travaillerSéparément fournie moteur du Terre laTravail Faites Ne ChineRéglage Peut avertissement cet de respect non Le Matériels dégâtsDes ou corporelles blessures des entraîner Travailler à prêt soyez vous que ce jusqu’àAvant Marche LA DE D’EMBRAYAGE Barre CetteMoteur DU Commandes Roues DES D’ENTRAÎNEMENT GoupillesMoteur Assemblage’HUILE Plein Étape Septième Avant Marche LA DE Installa Étape QuatrièmeIncorrecte tension Remarque ’EMBRAYAGE Câble DU TionCaisse LA DE Culteur Moto LE Sortir Étape TroisièmeDétachées pièces des Liste RemarqueRemisage et Entretien SYMBOLE! CE Accompagne QUI L’AVERTISSEMENTResponsabilité Votre RespectezPréparation SYMBOLE! CE Accompagne QUI L’AVERTISSEMENT RespectezFonctionnement Général en UtilisationDépannage Commandes et CaractéristiquesSaison hors Remisage et Entretien ’UTILISATION Notice 02/24/2006 772C0845

643B, 643C, 645A specifications

The Bolens 645A, 643C, and 643B are celebrated models in the lineup of Bolens garden tractors, known for their durability and versatility. These machines, produced during the 1970s and 1980s, are vintage favorites for homeowners and garden enthusiasts seeking rugged equipment for their gardening needs.

The Bolens 645A is especially noted for its robust build and powerful performance. Equipped with a 7-horsepower engine, the 645A can tackle a variety of tasks, from mowing to snow removal, making it a multipurpose tool in any garden or landscape. One of the main features of the 645A is its hydrostatic transmission, which allows for seamless speed adjustments, providing exceptional maneuverability in tight spaces and varied terrain.

Similarly, the Bolens 643C and 643B models boast impressive features and capabilities. The 643C is renowned for its compact yet powerful 6-horsepower engine. It includes a gear-driven transmission, which offers reliable power transfer and increased efficiency while operating under demanding conditions. The steady performance of the 643C makes it ideal for smaller properties, where precision and control are paramount.

The 643B, while slightly less powerful than its sibling, still holds its own with a solid 5-horsepower engine. It is particularly favored for its ease of use and relatively low maintenance requirements, making it a perfect choice for casual gardeners or those new to the world of garden tractors. Its straightforward controls and simple mechanisms ensure that users can quickly learn to operate it proficiently.

All three models are engineered with a focus on user comfort. The seating is designed ergonomically, allowing users to operate for extended periods without discomfort. Additionally, the accessibility for maintenance tasks is a notable characteristic, ensuring that both professional and amateur gardeners can perform regular upkeep with ease.

In terms of technology, these models utilize straightforward mechanical designs with minimal electronic components, which reduces the likelihood of breakdowns and simplifies repairs. The rugged construction of the chassis and attachments demonstrates Bolens' commitment to longevity and resilience, making these tractors a solid investment for any gardening enthusiast.

In summary, the Bolens 645A, 643C, and 643B models stand out in the garden tractor market due to their powerful engines, user-friendly designs, and robust construction. They represent a blend of efficiency and reliability, catering to a wide range of gardening tasks and maintaining a loyal following among vintage equipment enthusiasts.
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