Yard Machines 390 manual Maintaining Your Tiller

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SECTION 6: MAINTAINING YOUR TILLER

Lubrication

WARNING: Always stop engine and disconnect spark plug wire before cleaning, lubricating or doing any kind of work on tiller.

Pivot Points-Remove the belt cover and lubricate all moving parts and pivot points at least once a season using SAE 30 engine oil.

Chain Drive-The chain case is pre-lubricated and sealed at the factory.

WARNING: Disconnect spark plug wire and ground it against the engine before performing any repairs or maintenance.

Trouble Shooting

Refer to the trouble shooting chart for more information.

Engine

Refer to the separate engine manual for all engine maintenance instructions.

Maintain engine oil as instructed in the separate engine manual packed with your unit. Read and follow instructions carefully.

Service air cleaner every 25 hours under normal conditions. Clean every few hours under extremely dusty conditions. Poor engine performance and flooding usually indicates that the air cleaner should be serviced. To service the air cleaner, refer to the separate engine manual packed with your unit.

IMPORTANT: Never run your engine without air cleaner completely assembled.

The spark plug should be cleaned and the gap reset once a season. Spark plug replacement is recommended at the start of each tilling season; check engine manual for correct plug type and gap specifications.

Clean the engine regularly with a cloth or brush.

Keep the cooling system (blower housing area) clean to permit proper air circulation which is essential to engine performance and life. Be certain to remove all dirt and combustible debris from muffler area.

Cleaning The Tine Area

Clean the underside of the tine shield after each use. The dirt washes off the tines easier if washed off immediately instead of after it dries.

We do not recommend the use of pressure washers to clean your unit. It may cause damage to electric

components, spindles, pulleys, bearings or the engine. The use of pressure washers will result in shortened life and reduce serviceability.

Belt Removal And Replacement

Your tiller has been engineered with belts made of special material (Kevlar Tensile). They should not be replaced with an off-the-shelf belt. If belt replacement is required, order belt or belts by part number from your nearest authorized service dealer.

Forward Drive Belt - Part No. 754-0428

Reverse Drive Belt (390 Only) - Part No. 754-0429

Reverse Drive Belt (Model 390 Only)

Disconnect and ground the spark plug wire against the engine. Remove the belt cover from the left side of the tiller as follows.

Remove two self-tapping screws and flat washers from the front of belt cover. See Figure 16.

Remove the hex stop nut and flat washer from the side of the belt cover. Remove belt cover.

Self-Tapping

Hex Nut and Washer

Screws

 

Belt

Cover

Figure 16

Lift the belt off the transmission pulley.

Remove the hex nut which secures the reverse idler pulley to the idler bracket. Slide idler pulley out and remove the belt. See Figure 17.

Reverse Idler Pulley

Forward

 

Belt

Hex Nut

 

Engine

 

Pulley

 

Reverse Belt

 

Model 390 Shown

Transmission

Pulley

Figure 17

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Contents Operator’s Manual Table of Contents General Operation Important Safe Operation PracticesChildren Attaching The Handle Assembly Setting Up Your TillerAssembling Your Tiller Removing Unit From CartonAttaching Clutch Control Cables Forward Cable Know Your Tiller Final Clutch AdjustmentThrottle Control Models 340 thruGas and Oil Fill up Operating Your TillerStarting Engine To Stop Engine Using Your TillerModels 343 Wheel PositionControlling Speed And Tilling Depth Depth Stake AdjustmentCultivating Transporting The TillerTine Width Adjustment Clutch Control AdjustmentsWheel Adjustments Depth Stake AdjustmentMaintaining Your Tiller Forward Drive Belt See Figure OFF-SEASON StorageTrouble Possible Causes Corrective Action Trouble Shooting GuideModel 340 Thru Part Description 255 Model 340 Thru Model Description 252624 Model MANUFACTURER’S Limited Warranty for

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.