Throttle Control: The throttle control lever adjusts the engine speed and stops the engine. With the throttle control lever pushed completely forward, the carburetor is in START position. Pulling the throttle control back slightly adjusts the engine speed to FAST. Pulling the throttle back further reduces the engine speed to SLOW. Pull the throttle completely back to stop the engine.

Use maximum engine speed for deep tilling. Move the throttle control to SLOW when transporting the tiller.

Transporting The Tiller

To transport the tiller to or from the garden, pivot the depth stake forward, out of the way. See Figure 12. With the throttle control in SLOW position, the unit will walk freely on top of the lawn. If the operator does not allow the tiller to move freely, the unit will start to till the surface.

Cultivating

For cultivating, a two to three inch depth is desirable. Setting the wheels and depth stake so that the wheels are about two inches above the ground while the tiller is resting on the tines and depth stake will allow the machine to work at cultivating depth. The throttle should be set to control forward movement to a slow walking speed. With the outer tines installed, the working width of the machine is 22 or 24 inches. For cultivation, this may be reduced to 13 inches by removing the outer tines. Refer to Tine Width Adjustment in Adjustment section. When laying out plant rows, be sure to allow enough width to permit cultivation between the rows. In growing corn or similar crops, check-row planting will permit cross cultivation and practically eliminate hand hoeing.

Figure 14

The tiller has many uses other than tilling and cultivating a garden. One of these is the preparation of lawn area for seeding. The tiller will prepare a deep seed bed which will be free of hard untilled spots, allowing a better stand of grass to grow. The tiller is very useful for loosening hard soil for excavation with a shovel. No tedious hand pickwork will be necessary. Your tiller may be used for mixing compost in the pile, or for mixing it with the soil in your garden. This should be done after the soil has been broken to the full working depth. The compost should be worked in to a depth of six to seven inches. This may be done by working the length of the garden, and then by making separate passes across its width. The addition of decayed organic matter will substantially increase the fertility of your garden. For proper decaying action, fertilizer should be applied and worked in with the mulch materials. Breaking up leaves and straw and mixing it with several inches of soil causes the soil to hold moisture longer and allows proper aeration of the plant root system. This also retards the growth of weeds.

The U.S. Department of Agriculture and various state and local agencies offer published booklets and expert advice on all phases of gardening. They should be consulted regarding soil information, planting dates, and the most satisfactory varieties of crop for your particular area.

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Yard Machines 390 manual Transporting The Tiller, Cultivating
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390 specifications

The Yard Machines 390 is a robust and versatile lawn mower designed to meet the demands of both residential and commercial users. With its powerful features and advanced technologies, the Yard Machines 390 delivers exceptional performance, making lawn care an easier and more efficient task.

At the heart of the Yard Machines 390 is a reliable engine. The 390cc engine provides ample power to tackle even the toughest mowing jobs. This engine is engineered for optimal performance, ensuring a smooth and consistent cut across various grass types. Its efficient fuel consumption not only extends the operation time but also reduces the frequency of refueling.

One of the standout features of the Yard Machines 390 is its cutting deck. The 21-inch cutting deck is crafted from durable materials, allowing for longevity and resilience against wear and tear. The deck is designed for superior airflow, ensuring a clean and even cut every time. Additionally, the mower offers multiple cutting height positions, allowing users to customize their mowing height according to their preference and the type of grass being cut.

The Yard Machines 390 is equipped with a self-propelled drive system, which significantly reduces the effort required by the user. This feature is particularly beneficial on hilly terrain or uneven surfaces, providing enhanced maneuverability and control. The adjustable speed settings further allow users to tailor the mowing pace to their comfort level.

An additional characteristic of the Yard Machines 390 is its ease of maintenance. The mower is designed for simple access to vital components, making routine maintenance tasks such as oil changes and blade sharpening straightforward and hassle-free. The machine's durable construction also contributes to its reliability and reduces the need for frequent repairs.

Moreover, the Yard Machines 390 incorporates safety features to protect users during operation. The operator presence control ensures that the engine stops immediately if the user loses control of the mower, minimizing the risk of accidents.

In summary, the Yard Machines 390 is a powerful, efficient, and user-friendly lawn mower that combines advanced technology with practical features. Its robust engine, versatile cutting deck, self-propelled drive, and safety measures make it an excellent choice for anyone looking to maintain a pristine lawn with minimal effort. Whether you are a homeowner or a professional landscaper, the Yard Machines 390 is designed to deliver exceptional results.
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