Bolens 645A, 643B Introduction, Tools / Materials Needed, Assembly Steps, Loose Parts List

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WARNING: To prevent personal injury or property damage, do not start the engine until all assembly steps are complete and you have read and understand the safety and operating instructions in this manual.

INTRODUCTION

Carefully follow these assembly steps to correctly prepare your tiller for use. It is recommended that you read this Section in its entirety before beginning assembly.

NOTE: Various tiller models are presented in this manual. Use only the information appropriate for your tiller model. Engine styles vary by model. Your engine may appear differently than those illustrated in this manual.

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Assembly

TOOLS / MATERIALS NEEDED

(2) 1/2” open-end wrench*

(2) 9/16” open-end wrench*

(1) 3/8” open-end wrench*

(1)Large adjustable wrench (Models 643B & 645A only)

(1) Scissors (to trim plastic ties)

(1) Ruler (for belt tension check)

(1)Block of wood (to support tiller when removing wheels)

(1)Tire pressure gauge (for models with pneumatic tires)

(1) Clean oil funnel

(1)Motor oil. Refer to the Engine Owner’s Manual for oil specifications and quantity required.

* Adjustable wrenches may be used.

NOTE: Stand behind the tiller as if you were going to operate it. Your right hand corresponds to the right side of the tiller; your left hand

ASSEMBLY STEPS

STEP 1: UNPACKING INSTRUCTIONS

NOTE: While unpacking, do not severely bend any control cables.

1.The tiller weighs approximately 133 lbs. Do not attempt to remove it from the shipping platform until instructed to do so in these Assembly steps.

2.Remove any packaging material from the carton. Remove any staples from the bottom of the carton and remove the carton from the shipping platform.

3.Remove all unassembled parts and the separate hardware bag from the carton. Check that you have the items listed in the Loose Parts List (contact your local dealer or the factory items are missing or damaged).

NOTE: Use the screw length template (Fig. 2-1) to identify screws.

Loose Parts List

Qty. Description

1Handlebar Support (see A, Fig. 2-2)

1Handlebar Assembly (see K, Fig. 2-2) Hardware bag contents:

4Hex hd. screw, 5/16-18 x 1-1/2”

2 Hex hd. screw, 3/8-16 x 3/4”

2 Flat Washer, 3/8”

4Split lock washer, 5/16”

4Hex nut, 5/16”-18

2Hex locknut, 3/8”-16 *Models 643B & 645A only

IMPORTANT: Motor oil must be added to the engine crankcase before the engine is started. Follow the instructions in this Section and in the separate Engine Owner’s Manual.

STEP 2: ATTACH HANDLEBAR

1.Loosely attach the legs of the handlebar support (A, Fig. 2-2) to the inner sides of the tiller frame using two 3/8”-16 x 3/4” hex hd. screws (B), 3/8” flat washers, and 3/8”-16 hex locknuts.

2.Using two 5/16”-18 x 1-1/2” screws (C), 5/16” split lock washers (D) and 5/16”-18 hex nuts (G), loosely attach the handlebar support (A) using the upper holes. Tighten the two screws securely.

Figure 2-1: To identify length of screws, place screw on template as shown and measure distance between bottom of screw head and tip of screw.

corresponds to the left side of the tiller.

NOTE: This operator’s manual may cover various models of tillers. The units illustrated may vary slightly from your unit. Follow only those instructions which pertain to your model number.

IMPORTANT

This unit is shipped without gasoline or oil in the engine. Fill up gasoline and oil as instructed in the accom- panying engine manual BEFORE operating your machine.

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Contents 02/24/2006 772C0845Table of Contents Preparation TrainingOperation Heed ITS WarningNever pick up or carry machine while the engine is running Maintenance & StorageAssembly Steps AssemblyLoose Parts List IntroductionImportant The support brackets must be assembled to Outside of the handle- bar assemblyMove Tiller OFF Crate Wheel shaft LThread the #10-24 hex nut Z, Fig Install Forward Clutch CableThread the screw V into the cable adjuster ADD Motor OIL Check Transmission OIL LevelCheck Hardware Check all nuts and screws for tightnessWheel Drive Pins Features ControlsIntroduction Engine ControlsTo operate the Forward Clutch Bail Forward Clutch BailDepth Regulator Lever Reverse Clutch Control Models 643B & 645A onlyTo adjust the handlebars Handlebar Height AdjustmentFeatures and Controls Pre-Start ChecklistIntroduction BREAK-IN Operation Starting and StoppingStopping the Engine and Tiller Release all controls on the tillerOperating the Tiller Reduces tractionStopping the Tiller and Engine FreewheelAvoid Tilling Soggy, Wet Soil Read the following recommendations before tilling on slopesTilling Up and Down Slopes Vertical Tilling Loading and Unloading the Tiller Terrace GardeningTiller Lubrication Maintenance Schedule ProcedureCheck for OIL Leaks Check HardwareBolo Tines Transmission Gear OIL ServiceYou have good footing. Never permit tiller Removing/Installing a Tine AssemblyOnly Replacement Belt InformationDrive Belt Tension Models 643B & 645A To Check Reverse Belt TensionSpark Plug Service Engine Cleaning AIR Cleaner Service Engine OIL ServiceOFF-SEASON Storage To Check the Engine Oil LevelTrouble Shooting Warranty Page La page 2 pour ce qui concerne les pièces et/ou accessoires Parts List Pièces DétachéesAdressez-vous au «Service après-vente» 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 Juridictions les selon GarantieDépannage Teur -CARBURATEUR/RÉGULA DU Réglages Bougie LA DE EntretienLles -ÉTINCE-PARE L’ÉCRAN DE Entretien Moteur à l’huile changer Pour .BAIR À Filtre DU Entretien Moteur À L’HUILE DE VidangeMoteur DU Nettoyage Intérieur blocage de l’écrou serrez et tourner deMarche LA DE Courroie LA DE Sion Seulement 645A et 643B Modèles ArrièreTEN LA DE Réglage ET Vérification Avant Marche LABolo Dents AvantDents ArbreFond Pas ne pour niveau le fréquemment VérifiezMission Trans LA DE Engrenages Pour HuileEntretien Motoculteur DU Déchargement ET Chargement UtilisationCorporelles blessures Dents des NettoyageSauf déconseillons Risques des présenterTerre une travailler de Évitez DétrempéeTerre la pulvériser Les laissez et travaillant en détendu Soyez .b Corporelles Blessures des et matériels dégâts desMotoculteur, du contrôle de perte la Profondeur en plus dents les travaillerTravail Terre laSéparément fournie moteur du Réglage ChineFaites Ne Des ou corporelles blessures des entraîner Matériels dégâtsPeut avertissement cet de respect non Le Travailler à prêt soyez vous que ce jusqu’àCette Avant Marche LA DE D’EMBRAYAGE BarreRoues DES D’ENTRAÎNEMENT Goupilles Moteur DU Commandes’HUILE Plein Étape Septième AssemblageMoteur Incorrecte tension Remarque Installa Étape QuatrièmeAvant Marche LA DE ’EMBRAYAGE Câble DU TionMoto LE Sortir Étape Troisième Caisse LA DE CulteurRemarque Détachées pièces des ListeResponsabilité Votre SYMBOLE! CE Accompagne QUI L’AVERTISSEMENTRemisage et Entretien RespectezFonctionnement SYMBOLE! CE Accompagne QUI L’AVERTISSEMENT RespectezPréparation Général en UtilisationSaison hors Remisage et Entretien Commandes et CaractéristiquesDépannage 02/24/2006 772C0845 ’UTILISATION Notice

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.