SECTION 7: MAINTENANCE AND REPAIR INSTRUCTIONS

Replacing the Spark Plug

Use a Champion RDJ7Y spark plug (or equivalent). The correct air gap is 0.020 inch (0.5 mm). Remove the plug after every 25 hours of operation and check its condition.

1.Stop the engine and allow it to cool. Grasp the plug wire firmly and pull it from the spark plug.

2.Clean around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 in. socket counterclockwise.

3.Replace cracked, fouled or dirty spark plug. Set the air gap at 0.020 in. (0.5 mm) using a feeler gauge. See Figure 34.

CAUTION: Do not sand blast, scrape or clean electrodes. Grit in the engine could damage the cylinder.

4.Install a correctly-gapped spark plug in the cylinder head. Tighten by turning the 5/8 inch socket clockwise until snug.

If using a torque wrench torque to:

110-120 in.•lb. (12.3-13.5 N•m).

Do not over tighten.

Long Term Storage

If the unit will be stored for an extended time, use the following storage procedure:

1.Drain all fuel from the fuel tank into a container with the same 2-cycle fuel mixture. Do not use fuel that has been stored for more than 60 days. Dispose of the old fuel/oil mix in accordance to Federal, State, and Local regulations.

2.Start the engine and allow it to run until it stalls. This ensures that all fuel has been drained from the carburetor.

3.Allow the engine to cool. Remove the spark plug and put 1 oz. (30 ml) of any high quality motor oil or 2- cycle oil into the cylinder. Pull the starter rope slowly to distribute the oil. Reinstall the spark plug.

NOTE: Remove the spark plug and drain all of the oil from the cylinder before attempting to start the trimmer after storage.

4.Thoroughly clean the unit and inspect for any loose or damaged parts. Repair or replace damaged parts and tighten loose screws, nuts or bolts. The unit is ready for storage.

0.020 in.

(0.5 mm)

Figure 34

Transporting

•Allow the engine to cool before transporting.

•Secure the unit while transporting.

•Drain fuel from unit.

•Tighten fuel cap before transporting.

Cleaning

WARNING: To avoid serious personal injury, always turn your trimmer off and allow it to cool before you clean or service it.

Use a small brush to clean off the outside of the unit. Do not use strong detergents. Household cleaners that contain aromatic oils such as pine and lemon, and solvents such as kerosene, can damage plastic housing or handle. Wipe off any moisture with a soft cloth.

Storage

•Never store the unit with fuel in the tank where fumes may reach an open flame or spark.

•Allow the engine to cool before storing.

•Store the unit locked up to prevent unauthorized use or damage.

•Store the unit in a dry, well-ventilated area.

•Store the unit out of the reach of children.

Accessories/Replacement Parts

2-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147543 Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610311

Spark Arrestor . . . . . . . . . . . . . . . . . . . . . . . . . . . .182747

Replacement Line . . . . . . . . . . . . . . . . . . . . . . . . 181472

Replacement Line Cartridge . . . . . . . . . . . . . . . . 181460

Inner Reel Spring . . . . . . . . . . . . . . . . . . . . . . . . . 181465

Outer Spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181457

Inner Reel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181464

Bump Knob™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181468

Fuel Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180000 Shoulder Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . 682075

These replacement parts can be purchased from your local authorized dealer.

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MTD YM75 manual Replacing the Spark Plug, Long Term Storage, Transporting, Cleaning, Accessories/Replacement Parts
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YM75 specifications

The MTD YM75 is a compact and efficient tractor designed for a variety of agricultural and landscaping tasks. Known for its versatility and robust performance, the YM75 is favored by many small-scale farmers and landowners looking to enhance their productivity.

One of the standout features of the MTD YM75 is its powerful engine. The tractor is equipped with a reliable diesel engine that has a displacement of 1.7 liters, delivering around 75 horsepower. This impressive power allows the YM75 to tackle tough tasks such as plowing, tilling, and hauling materials with ease. The efficiency of its engine not only provides ample power but also ensures lower fuel consumption, making it economical for long-term use.

The MTD YM75 incorporates advanced technologies that make it user-friendly and efficient. The tractor features a synchronized transmission system, allowing for smooth gear shifts and precise control over speed and torque. This is particularly beneficial when operating various implements or navigating challenging terrains. Additionally, the tractor's compact design enables it to maneuver effortlessly in tight spaces, making it suitable for small farms and gardens.

The hydraulic system of the YM75 is another highlight, boasting a high lifting capacity. This enables the attachment of various implements, such as front loaders, backhoes, and other tools, enhancing the tractor's versatility. The hydraulic setup is designed to be responsive, providing operators with the ability to control attachments with precision.

In terms of operator comfort, the MTD YM75 does not disappoint. It features an ergonomic cabin with adjustable seating, providing a comfortable driving experience even during long working hours. The controls are intuitively placed, allowing for easy access and minimizing distractions while operating the machinery.

Durability is a key characteristic of the MTD YM75. Built with high-quality materials and robust construction, this tractor is designed to withstand the rigors of daily agricultural work. Its rugged tires ensure excellent traction and stability on various terrains, contributing to its overall reliability.

In summary, the MTD YM75 is a powerful, versatile, and user-friendly tractor that meets the needs of modern farmers and landscapers. With its efficient engine, advanced hydraulic system, ergonomic design, and durability, it stands out as an excellent choice for enhancing productivity in any agricultural setting. Whether for tilling the land or managing landscaping projects, the YM75 proves to be an invaluable asset.
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