other electrical components. This is a stan- dard plug-in type automotive fuse rated at 7.5 amp.

7.Safety Switches: There are five safety switches in the electrical circuit which control the engine. They are (1) the blade clutch switch, (2) the parking brake switch, (3) the left and (4) the right steering lever switches and (5) the seat switch.They operate so that in order to start the engine, the blade clutch switch must be off, the parking brake must be engaged, and both steering levers must be opened-out to the side in the neutral position. Once the engine is started, the seat must be occupied and the parking brake must be released before either of the steering levers is folded up to the operating position or the engine’s electronic ignition will be grounded out and the engine will stop. Also, the seat must be occupied before the blade clutch switch can cause the blades to rotate.

8.Safety Switch Operation Checks: The fol- lowing operational checks should be made daily.

a.Blade Clutch Switch: Sit in the operator’s seat. With both steering levers opened-out in the neutral position and the parking brake engaged, turn the blade clutch switch “on” and try to start the engine. The engine should not start. If it does, the blade clutch switch must be replaced. If the engine does not start, turn the blade clutch switch “off” and start the engine. Now turn the blade clutch switch “on” and the blades should rotate. If the blades do not turn, the blade clutch switch must be replaced, the seat switch must be replaced or the elec- tric PTO clutch must be repaired.

b.Parking Brake Switch: Sit in the opera- tor’s seat. With both steering levers opened-out in the neutral position and the blade clutch switch “off”, release the park- ing brake and try to start the engine. The engine should not start. If it does, the park- ing brake switch must be repositioned or perhaps replaced. If the engine does not start, engage the parking brake and start the engine. Swing one steering lever up to the operating position and the engine should stop. If the engine does not stop, the parking brake switch must be reposi- tioned or replaced.

c.Left and Right Steering Lever Switches: Sit in the operator’s seat. With both steer- ing levers opened-out in the neutral posi- tion, the parking brake engaged and the blade clutch switch “off”, swing the left

steering lever up to the operating position and try to start the engine. The engine should not start. If it does, the left steering lever switch must be repositioned or per- haps replaced. Open the left steering lever to the neutral position and swing the right steering lever up to the operating position and try to start the engine. The engine should not start. If it does, the right steer- ing lever switch must be repositioned or perhaps replaced. If the engine does not start, Open the right steering lever to the neutral position and start the engine. Swing the left steering lever up to the oper- ating position and the engine should stop. If the engine does not stop, the left steering lever switch must be repositioned or replaced. Open the left steering lever out to the neutral position and start the engine. Swing the right steering lever up to the operating position and the engine should stop. If the engine does not stop, the right steering lever switch must be repositioned or replaced.

d.Seat Switch: With both steering levers opened-out to the neutral position, the parking brake engaged and the blade clutch switch in the “off” position, start the engine. Now release the parking brake, hold down on the back of the operator’s seat against spring pressure, and swing one of the steering levers up to the operat- ing position. Release the operator’s seat and the engine should stop. If the engine does not stop, the seat switch must be replaced. With both steering levers folded out in the neutral position, the parking brake engaged and the blade clutch switch in the “off” position, sit in the operator’s seat and start the engine. Turn the blade clutch switch to the “on” position and the blades should start to rotate. Raise up slightly off the operator’s seat and the blades should stop. If the blades do not stop when you dismount from the opera- tor’s seat, the seat switch must be replaced.

e.Electric PTO Clutch: This clutch operates when the engine is running, the operator is in the operator’s seat and the blade clutch switch is turned on.This electric clutch is a fairly trouble free device. If a problem develops and the blades do not turn, first check the 7.5 amp fuse in the yellow, 16- gauge wire between terminal “L” (for the Gasoline Engine) on the ignition switch and the hour meter and then investigate

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MTD 18HP service manual
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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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