part number) facing the ground when the tractor is in the operating position. Carefully align “star” on blade with “star” on spindle. Secure with flange nut.

Blade Mounting Torque

Hex Flange Nut: 840 in. lb. min., 1080 in. lb. max.

•All nuts and bolts must be checked periodically for correct tightness.

Belt Replacement

WARNING: Disconnect the spark plug wire(s) and ground it against the engine. Block the wheels of the unit.

NOTE: Figure 19 and Figure 22 are shown with the unit tipped up for clarity. It is not necessary to tip the unit to remove the belts. However, for convenience, if you decide to tip it, remove the battery from the unit first.

•To prevent gasoline leakage, drain the gasoline, or remove the fuel tank cap. Place a thin piece of plastic over the neck of the fuel tank and screw on the cap. Be certain to remove the plastic when finished changing the belts. Block unit securely.

Deck Belt (38" and 42" Decks)

•Place the lift lever in the engaged (all the way forward) position.

•Disconnect the spring which is attached to a bracket on the transaxle, inside the right rear wheel. Use a spring puller or other suitable tool.

NOTE: When reassembling, make certain belt keeper pins are assembled in the same locations from which they were removed. See Figure 19 .

Belt Keeper Pins

Engine

Pulley

Figure 19

•Place the lift lever in the BLADES STOP position.

•Remove the belt keeper pins from the lower frame.

•Unhook the deck belt from the engine pulley.

•Place the lift lever in the engaged (all the way forward) position.

•Disconnect the stabilizer plate from the stabilizer shaft assembly by removing the hairpin clips and flat washers and sliding out the rod.

•Disconnect the six deck links by removing the hairpin clips and flat washers.

•Place the lift lever in the BLADES STOP position.

•Slide the deck from beneath the lawn tractor.

•Remove the belt guards at each deck pulley by removing the self-tapping screws. See Figure 20 .

•Remove and replace the belt, reassemble following the instructions in reverse order.

Stabilizer

PlateBelt

Guard

Self-Tapping

Screws

Deck

Pulleys

Belt Guard

Figure 20

Deck Belts (46" Deck)

•Place the lift lever all the way forward.

•Disconnect the spring which is attached to a bracket on the transaxle inside the right rear wheel. Use a spring puller or other suitable tool.

NOTE: When reassembling, make certain belt keeper pins are assembled in the same locations from which they were removed. See Figure 19 .

•Place the lift lever in the BLADES STOP position.

•Remove the belt keeper pins from the lower frame. Refer to Figure 19 .

•Unhook the deck belt from the engine pulley.

•Place the lift lever in the engaged (all the way forward) position.

•Disconnect the stabilizer plate from the stabilizer shaft assembly by removing the hairpin clips and the flat washers and sliding out the rod. Refer to Figure 14 .

•Disconnect the six deck links by removing the hairpin clips and flat washers.

•Place the lift lever in the BLADES STOP position.

•Slide the deck from beneath the lawn tractor.

•Remove the top deck drive belt by lifting up on the stabilizer plate, and slipping belt off the pulley.

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MTD 690 through 699 manual Belt Replacement, Blade Mounting Torque, Deck Belt 38 and 42 Decks, Deck Belts 46 Deck
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690 through 699 specifications

MTD (Motor Technology Division) has developed a remarkable series of compact tractors under the model numbers 690 through 699, which have gained popularity among agricultural professionals and hobby farmers alike. These models are designed to provide powerful, efficient, and versatile performance for a variety of farming tasks.

One of the standout features of the MTD 690 to 699 series is their ergonomic design, which emphasizes operator comfort and ease of use. The tractors are equipped with adjustable seats, intuitive controls, and clear visibility from the operator’s station, ensuring that users can work for extended periods without fatigue. This focus on comfort makes these tractors suitable for both full-time farmers and those who engage in part-time farming or landscaping.

In terms of technology, this series is fitted with advanced engine options that deliver impressive horsepower. The engines are designed for optimal fuel efficiency, reducing operational costs and environmental impact. Additionally, features like electronic fuel injection enhance performance, ensuring reliable startup and smooth operation under varying load conditions.

The transmission systems found in the MTD 690 to 699 models are engineered for versatility. Many models are equipped with hydrostatic transmissions, allowing for seamless speed and directional changes without the need for clutch engagement. This capability is particularly useful when maneuvering in tight spaces or performing tasks that require precision.

Another defining characteristic of this series is their hydraulic systems, which provide powerful lifting capabilities. This makes it easier to attach and operate a wide range of implements and attachments, from loaders to mowers, enhancing productivity on the farm. The hydraulic systems are designed with user-friendliness in mind, allowing for quick attachment changes that reduce downtime during chores.

Durability is also a hallmark of MTD's 690 through 699 tractors. Constructed with robust materials and designed to withstand harsh working conditions, they feature reinforced frames and components that provide longevity and reliability. This durability ensures that the tractors can handle demanding tasks day in and day out, making them a dependable asset for any agricultural operation.

In summary, the MTD 690 through 699 series offers a blend of comfort, efficiency, and technology, making them an attractive option for anyone looking to enhance their farming capabilities. With powerful engines, user-friendly controls, advanced hydraulic systems, and exceptional durability, these compact tractors are poised to meet the needs of today’s diverse agricultural landscape.
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