MTD 18HP service manual Changing the Spindle Assembly, Adding Hydraulic Oil use SAE20W

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Cover

Plate

Spindle

Figure. 7

e.Pull the tensioner pulley away from the belt and remove the PTO belt then remove the blade drive belt.

f.Reverse the process to install the belt.

Note: When replacing belts do not over- tighten. Adjust the idler pulley so that a ten- pound pull with a spring scale between two pulleys deflects the belt about 1/2".

4.Changing the Spindle Assembly

a.Jack up the front of the mowing deck about one foot and block it in that position.

b.Make sure the blade clutch is disengaged.

c.Remove the deck cover.

d.Remove the drive belts. (See 3. Changing Blade Drive Belts.)

e.Remove the cutter blade. (See 2. Chang- ing a Blade.)

f.Using a wrench or socket rachet remove four hex nuts, and the four hex head cap screws. Remove the spindle assembly.

B.Hydraulic Oil

WARNING:

Never overfill the hydraulic units. Damage can occur if the oil level is not within the proper operating range.

Note: When adding hydraulic oil, do so in

small quantities and recheck the oil level before adding more. It is important that you do not overfill the reservoir.

Figure. 8

Hydraulic Tank

1.Adding Hydraulic Oil (use SAE20W 50)

a.Place the Mower on a level surface and engage the parking brake.

b.Stop the engine and remove the key from the ignition switch.

c.Clean the area around the Hydraulic Oil fill neck.

d.Remove the hydraulic fill cap and check the level. The correct level is up to the low- est hole of the oil tank fill neck.

e.Pour hydraulic oil into the reservoir up to the lowest hole in the oil tank fill neck, if necessary.

2.Draining Hydraulic Oil

Used hydraulic oil must be disposed of properly. Do not pour it down a drain or sewer, or dump it on open land, this creates an environmental hazard. Please be aware of the environment when disposing of used oil.

a.Place the Mower on a level surface and engage the parking brake.

b.Stop the engine and remove the key from the ignition switch.

c.Remove the mower deck. See Mower Deck on page 13.

d.Raise the seat forward to expose the hydraulic oil fill point.

e.Clean the area around the hydraulic fill oil cap.

f.Remove hydraulic fill oil cap.

g.Place a suitable container (at least 2 gal- lon) under the hydraulic reservoir and filter.

h.Remove the hydraulic filter to allow hydrau- lic oil to drain. Remove the drain plug from the bottom of the hydraulic oil tank to drain. Replace the plug.

i.Place a small pan under the skid plate. Remove fill oil cap from hydraulic reservoir for faster drainage. Remove nut caps and

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Contents MMZ Jr Hydrostatic Zero-Turn Riding Mower Table of Contents Forward Safety Precautions General Safety OperationsGeneral When Mowing Related to FuelSafety Decals and Labels Shield Missing do not OperateSpecifications Safety Awareness when Mowing When MowingOperating Instructions To Mow Grass and Produce a Striped Pat- tern Figure Fuel Shutoff Valve Initial Adjustments Check the fluid levels and tiresZero Turn Break-In And Operating Procedures Lubricate all fittings listed in the mainte- nance sectionOrientation Initial OperationStart the Engine Maintenance Service Mower DeckParking the Mower Removing the Mower DeckChanging a Blade Changing the Blade Drive BeltsChanging the Spindle Assembly Stop the engine and remove the key from the ignition switchHydraulic Oil Adding Hydraulic Oil use SAE20WBattery Removal Installing the BatteryElectrical Circuit Specific Gravity Freezing Temp FPage Brakes TiresInflation Pressure Hydraulic System Hydraulic Oil Tank and FilterStorage Maintenance Schedule OIL Chart If Mower is so equippedHigh Speed Tracking Adjustment Enginge RPM Check and AdjustmentDeck Corner Ball Wheel Roller Settings Deck Center Anti-Scalp Roller SettingsLap Bar Adjustment Deck leveling ProcedureHeight of Cut LInk Point a Jam Nuts Point C Wiring Diagram Equipment TWO-YEAR Limited Warranty

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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