Handlebar Height Adjustment, To adjust the handlebars

Moving the lever upward will increase the tilling depth. The lowest notch allows a tilling depth of approximately 6”, depending on soil conditions. For best results, always begin tilling at a very shallow depth setting and gradually increase the tilling depth.

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.

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HANDLEBAR HEIGHT ADJUSTMENT

The handlebar height is adjustable to three different settings (Figure 3-6). In general, adjust the handlebars so they are at waist level when the tines are 3”-4” in the soil.

To adjust the handlebars:

1.Stop engine, disconnect spark plug wire from spark plug and allow engine to cool.

2.Remove hardware, reposition handlebars, and reinstall hardware securely.

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Features

and

Controls

WARNING

Figure 3-5: Depth Regulator Lever (G).

Figure 3-6: Handlebar height adjustment.

Be sure no one other than the operator is standing near the tiller while starting engine or operating the unit. Never run engine indoors or in enclosed, poorly ventilated areas. Engine exhaust contains carbon monoxide, an odorless and deadly gas. Keep hands, feet, hair and loose clothing away from any moving parts on engine and tiller.

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

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.

Bolens 645A, 643B, 643C warranty Handlebar Height Adjustment, To adjust the handlebars

Models: 643B 643C 645A