g.Verify proper throttle adjustment by check- ing RPM readings as outlined above.

C.Deck Corner Ball Wheel Roller Settings

1.Matching the set heights of the ball rollers on the four corners of the mower deck to the desired cut height will prevent edge scalping and minimize any side-to-side variance in cut height.

2.There are three height adjustment holes in the bracket that mount the ball rollers to the deck.

a.Use the top set of holes for cut heights of 2 inches or lower.

b.Use the middle set of holes for a 2-1/2 - 3-1/2 inch cut height.

c.Use the bottom set of holes for cut heights of 4 inches or higher.

D.Deck Center Anti-Scalp Roller Settings

1.The front and rear rollers help prevent the scalping of high spots and uneven terrain across the center section of the deck.

2.The rollers on the front of the deck are fixed at the factory and can not be adjusted.

3.The rollers on the rear of the deck can be adjusted downward one inch.

a.Lowering the roller will increase the strip- ing effect left behind the mower.

b.This positioning of the rear roller will also help to filter the mulched grass clippings into the turf.

c.Roller should not be lowered if the cut height is set at 2-1/2 inches or lower.

E.Lap Bar Adjustment

1.Proper lap bar and seat adjustment will result in the following:

a.In the neutral position with hands on the lap bars,

1.Operator’s upper arms should be relaxed and approximately vertical.

2.Operator’s forearms should be approxi- mately vertical.

b.In the full forward position,

1.Operator’s back should stay in contact with the seat back.

2.Lap bars should not contact operator’s legs.

c.In the full reverse position,

1.Lap bars should not contact the opera- tor’s legs or torso.

2.Set the seat to the preferred operating position.

a.Adjustment lever is located under the front edge of the seat.

b.The seat has five inches of front-to-rear adjustment available.

3.Check factory settings of lap bars for the con- ditions listed above.

Note: If lap bar adjustments are required,

height adjustments should be made prior to angular adjustments.

4.To adjust the height of the lap bars,

a.Remove the nuts from the lap bar mounting bolts (see Fig. 11).

b.Remove the bolts and lap bar and repostion to the seconc set of holes in the mounting block.

c.Replace the bolts and nuts and tighten to 28-34 ft-lbs.

1.If angular adjustments are also required, nuts can be tightened until snug at this point.

d.The same adjustments should be made to both sides of the mower.

5.(Optional lapbars only) To adjust the front-to- rear angle of the lap bars,

a.Loosen the nuts on the lap bar mounting bolts, leaving the bottom one fairly snug.

b.The top hole is slotted, allowing the lap bar to pivot on the bottom bolt.

c.Move lap bar to the desired angle and tighten the nuts to 28-34 ft-lbs.

Note: In the neutral position, the handles of

the lap bars should be aligned with approxi- mately a one inch gap between the tips. Adjus- the gap by adding shim washers to the top mounting bolt between the lap bar and the mounting block.

d.Check the results of any adjustments to the conditions described in section a, above. Repeat any adjustment procedures as required until all conditions are met.

Figure. 11

Lap Bar Mounting Bolt and Nuts

F. Deck leveling Procedure

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MTD 18HP service manual Deck Corner Ball Wheel Roller Settings, Deck Center Anti-Scalp Roller Settings, Lap Bar Adjustment
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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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