C.Initial Adjustments

1.Check the fluid levels and tires:

Note: These checks should be made daily, before starting the engine.

a.Fuel: Using a good grade of unleaded, regular gasoline (for a gasoline engine), fill the fuel tank. When the fuel reaches one inch from the top of the tank, stop. DO NOT OVERFILL. Space must be left for expansion.

b.Engine Oil: (Filled at the factory before shipment.) Pull out the oil dipstick, wipe it off and reinsert it. Pull it out again and read the oil level. If it is below the operating range, add oil through the fill tube using a funnel to bring it up to the top of the operat- ing range.

Note: Gasoline Engine: Use SAE 10W30 or SAE 10W40 engine oil, rated for service SJ.

c.Hydraulic Oil: (Filled at the factory before shipment.) The hydraulic oil tank is located beneath the operator’s seat. Always wipe off the area around the oil tank fill neck before checking the oil level to prevent dirt from contaminating the oil. Remove the cap and make sure the oil level is up to the lowest hole on the oil tank fill neck. The top hole is for venting. If the oil level is low, fill with a good grade of SAE20W-50 oil.

d.Tires: 8-10 psi Rear, 20-25 psi Front Caster Tires

Note: New tires are overinflated in order to properly seat the bead to the rim. The normal working pressure for the traction tires is 8-10 psi. The front caster wheels should be inflated to 20-25 psi.

2.Check that all Nuts, Bolts and Screws are Tight.

3.Check the tension of the deck drive belts.

a.Remove the deck cover

b.The tension of the deck drive belts are maintained by a spring mechanism that adjusts for wear and stretch.

c.Examine the belts for cuts, fraying, and excessive wear. Replace if any of these are detected.

d.Replace the deck cover.

4.Adjust the Mowing Deck: The cutting height is set anywhere in the range of 1-1/2" to 4". You may need to adjust the mowing deck to achieve the proper angle for mowing. Follow

the procedures below to set the appropriate angle to the mowing deck.

a.Park the mower on a flat paved surface, engage the parking brake, shut off the engine, remove the key from the ignition switch, remove connection of the spark plugs and using the transport lever, lower the mowing deck into the cutting position.

b.Using a ruler, pencil and paper, measure and note the distance from the paved sur- face to the bottom edge of the mowing blade at the front and the back of the deck on each side of the mower. (Four dimen- sions.)

Note: The front edge of the mowing deck should be 1/8"-1/4" below the rear edge of the deck so that the blades are cutting grass in only the front half of their circular path. This decreases friction and reduces the drive power required.

c.If the dimension at the front of the mowing deck is 1/8"-1/4" lower than the dimension at the rear of the deck on each side of the mower, do not adjust. If not, you will need to adjust the Deck Lift Spring Assist (See Figure 5). You may also need to adjust the Deck Links (See Figure 5).

Deck Lift Spring inner nut

Figure. 5

Deck Links

d.Lower the mower deck to the cutting posi- tion. With a wrench loosen the inner rear nut on the Deck Lift Spring Assist. To adjust the deck up or down, use a wrench and with a few turns, adjust clockwise or counter clockwise the outer rear nut of the Deck Lift Spring Assist. Repeat this proce- dure on the opposite side of the Mower. Once the deck is adjusted, retighten bolts.

e.With the deck still in the cutting position, adjust the Deck Links. With a wrench loosen the top inner bolt of the Deck Link. To adjust the side of the deck up or down turn the top bolt clockwise or counter

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MTD 18HP service manual Initial Adjustments, Check the fluid levels and tires
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18HP specifications

The MTD 18HP is a robust and reliable lawn tractor that has gained popularity amongst gardening enthusiasts and homeowners alike. This machine is designed to provide efficient performance while maintaining a user-friendly experience. One of the standout features of the MTD 18HP is its powerful 18 horsepower engine, which ensures that users can tackle even the toughest mowing tasks with ease. The engine is engineered to deliver impressive torque, making it suitable for a variety of environments and terrain types.

One of the key technologies integrated into the MTD 18HP is its hydrostatic transmission system. This feature allows for smooth and seamless operation, enabling the operator to effortlessly control the speed and direction of the mower without the need for shifting gears. This element greatly enhances the overall user experience and makes the machine easier to handle, especially for those who may be new to operating tractors.

The cutting deck of the MTD 18HP is another remarkable attribute. Typically featuring a 42-inch or 46-inch cutting width, the deck is designed for efficient grass cutting and allows for quick maneuverability around obstacles. With multiple cutting height adjustments, users can customize their mowing height to suit their lawn's specific needs. The durable construction of the cutting deck also aids in extending the lifespan of the mower while ensuring that it can withstand challenging mowing conditions.

Additionally, the MTD 18HP is equipped with ergonomic controls that enhance comfort during operation. The contoured seat and easy-to-reach controls promote a more enjoyable mowing experience, reducing fatigue during extended usage. The tractor also features large rear wheels that provide excellent traction and stability on uneven terrain.

Safety is a priority with the MTD 18HP, which includes features such as an automatic blade brake that engages when the operator leaves the seat, preventing any accidental injury.

In summary, the MTD 18HP is a powerful, user-friendly lawn tractor that combines impressive engine performance with innovative technologies and thoughtful design features. From its hydrostatic transmission to its adjustable cutting deck and ergonomic controls, this tractor is well-equipped to handle a range of yard maintenance tasks with ease and efficiency. Whether for residential or light commercial use, the MTD 18HP remains a solid choice for those who seek reliability and performance in their lawn care equipment.
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