Chute Assembly, Auger Control, Skid Shoes, Carburetor

•With the traction control is engaged, the friction wheel must contact the drive plate. See Figure 20.

Friction

Wheel

Gear Shaft

Drive

Plate

Gap

Figure 20

If adjustment is necessary:

•Loosen the jam nut on the traction control cable and thread the cable in or out as necessary.

•Retighten the jam nut to secure the cable when correct adjustment is reached.

•Reassemble the frame cover.

NOTE: If you placed plastic under the gas cap earlier, remove it now.

Chute Assembly

The distance snow is thrown can be adjusted by changing the angle of the chute assembly. To do so, stop the engine by removing the ignition key and loosen the plastic wing knobs found on either side of the discharge chute. Pivot the chute upward or downward before re-tightening the wing knobs.

Auger Control

Refer to Auger Control Test in the Operating Section to adjust the auger control.

Skid Shoes

The space between the shave plate and the ground can be adjusted. See Figure 21.

•For close snow removal on a smooth surface, raise skid shoes higher on the auger housing.

•Use a middle or lower position when the area to be cleared is uneven.

Carriage
Bolts	Hex Nuts
	Hex Nuts
	Skid
	Shoes

Figure 21

WARNING: Do not operate this snow thrower on gravel as loose gravel can be easily picked up and thrown by the auger causing injury to the operator and/or damage to the snow thrower.

•Adjust skid shoes by loosening the four hex nuts and carriage bolts. Move skid shoes to desired position.

•Make certain the entire bottom surface of skid shoe is against the ground to avoid uneven wear on the skid shoes. Retighten nuts and bolts securely.

Carburetor

•Minor carburetor adjustment may be required to compensate for differences in fuel, temperature, altitude and load.

•Refer to the separate engine manual, packed with your unit, for carburetor adjustment information.

WARNING: If any adjustments need to be made to the engine while the engine is running (e.g. carburetor), keep clear of all moving parts. Be careful of muffler, engine and other surrounding heated surfaces.

Adjusting Shift Rod

•Remove the hairpin clip and flat washer from the ferrule and remove the ferrule from the shift lever. Place the shift lever in the fastest forward speed position.

•Push down on the shift arm assembly as far as it will go. Thread the ferrule up or down the shift rod and align it with the hole closest to the shift knob on the narrow side of the shift lever assembly behind the handle panel. Refer to Figure 10.

664G, 644E specifications

The MTD 644E and 664G tractors represent a significant leap in agricultural technology and efficiency, designed for diverse farming applications. Known for their robust build and advanced features, these models cater to both small and large-scale agricultural operations.

Starting with the MTD 644E, it is powered by a state-of-the-art diesel engine, providing a reliable performance that enhances productivity. The engine delivers impressive horsepower, allowing farmers to tackle various tasks effortlessly. Its fuel efficiency is a standout feature, ensuring reduced operational costs while still meeting demanding farm requirements. The 644E also features a compact design, making it highly maneuverable in tight spaces while maintaining a sturdy construction that guarantees durability in rugged conditions.

On the other hand, the MTD 664G offers slightly higher horsepower, making it suitable for more intensive agricultural work. This model is equipped with a more advanced engine management system that optimizes performance and fuel consumption, ensuring that farmers can work longer hours without frequent refueling. The 664G’s larger frame accommodates additional implements, expanding its versatility for tasks including plowing, tilling, and harvesting.

Both models are built with user-friendly controls, allowing operators to focus on their tasks without unnecessary distractions. The ergonomic seating and intuitive interface are designed to minimize fatigue during long working days. Additionally, these tractors come with a range of safety features, including effective braking systems and visibility enhancements that prioritize operator safety.

Technologically, both the 644E and 664G incorporate precision farming features that allow for better resource management. Implement compatibility enables seamless integration with various agricultural tools, giving users flexibility in their operations. Regular software updates ensure that the tractors remain at the forefront of agricultural technology, further enhancing performance and efficiency.

In summary, the MTD 644E and 664G tractors are tailored for modern farmers seeking reliability and efficiency. Their powerful engines, compact designs, and cutting-edge technology make them indispensable tools on any farm, capable of handling a multitude of agricultural tasks with ease and precision.