1.Park the mower on a flat paved surface, engage the parking brake, shut off the engine, remove the key from the ignition switch, disconnect the spark plug wires and using the transport lever, lower the mowing deck into the 4" height of cut position. (The 4" height of cut position is recom- mended in order for one to see and obtain a measurement. Any height of cut position is acceptable as long as a proper measurement can be taken.)

2.Check the right and left front tire pressure. Adjust as necessary to 20-25 psi. Tire pressure can affect blade height by as much as a 1/4”.

3.Check the right and left rear Drive tire pressure. Adjust as necessary to 8-10 psi.

4.Measure blade-to-ground height at the front tip of the right blade. To obtain an accurate mea- sure, align blades in parallel with mower center- line, (i.e. front to back).

5.Measure blade-to-ground height at the front tip of the left blade. Be sure to measure at the blade tip with the blades arranged in proper position.

6.To level the deck, adjust the eyebolt at the left front of the deck (Point B) so that the blade-to- ground height at the right front blade tip matches that of the left front blade tip. This is done by loosening the jam nuts on the eyebolt and tightening the upper nut to raise the deck and loosening the nut to lower the deck. The right front blade tip height is fixed so you must adjust the left front tip to match it.

7.Measure the blade-to-ground height at the right rear blade tip. Again be sure to measure at the blade tip at the rear of the right blade when aligned along the mower centerline. The blade- to-ground height at the rear of the blade tip

Eyebolt

Point B

Eyebolt

Point D

Figure. 12

should be 1/8" to 1/4” higher than the front tip. This is referred to as blade pitch. The sam height difference should be true for the left blade, measured front and back.

8.To adjust the blade pitch the deck pitch must be adjusted. Loosen the inner jam nuts at the rear of the horizontal threaded rods. Start at Point C to raise the rear of the deck, tighten the rear outer jam nut to raise the deck pitch. Adjust the rear jam nut at Point D to take the “slack out of the threaded rod.

9.The final adjustment would be to take the “slack” out of the left rear linkage (Point D) by adjusting the jam nuts on the eyebolt. Loosen the jam nuts and tighten the upper nut to remove “slack”.

10.In many cases it will be necessary to adjust deck height using both eyebolt adjustments and pitch adjustment to achieve the correct blade-to- ground heights. If you remember that the front right blade tip adjustment is fixed and you level to that height, adjusting the decks will be simpli- fied.

Height of Cut LInk

Point A

Jam Nuts

Point C

26

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MTD 18HP service manual Height of Cut LInk Point a Jam Nuts Point C
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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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