Drive Belt

•Follow first four steps of previous instructions.

•Pull idler pulley up, and lift belt off engine pulley and friction wheel disc. See Figure 28.

•Using a wrench, loosen the nut on the stop bolt until the support bracket rests on the auger pulley.

See Figure 30.

•Slip belt between friction wheel and friction wheel disc. Remove and replace belt. Reassemble in reverse order.

NOTE: The support bracket must rest on the stop bolt after the new belt has been assembled. See Figure 30.

Friction

Wheel Disc

Friction Wheel

Drive Belt

Support Bracket

Stop

Bolt

Figure 30

Friction Wheel Rubber

Replace the friction wheel rubber if any signs of wear or cracking are found. Follow instructions below to replace the rubber.

•Tip the snow thrower up and forward, so that it rests on housing. Refer to Figure 19.

•Remove six self-tapping screws from the frame cover underneath the snow thrower.

•Remove the click pins which secure the wheels, and remove the wheels from the axle.

•Using a wrench to hold the shaft, loosen, but do not completely remove, the hex nut and bell washer on the left end of gear shaft. See Figure 31.

Hex Nut &

Bell Washer

Figure 31

•Lightly tap the hex nut to dislodge the ball bearing from the right side of the frame. Remove the hex nut and bell washer from the left end of the shaft.

•Slide the gear shaft to the right then slide the friction wheel assembly from the shaft.

•Remove the four screws from the friction wheel assembly. See Figure 32.

•Remove the friction wheel rubber from between the friction wheel plate.

•Reassemble new friction wheel rubber to the friction wheel assembly, tightening the four screws in rotation and with equal force. See Figure 32.

Screws

Friction Wheel Rubber

Hub

Friction Wheel

Plates

Figure 32

•Slide friction wheel assembly back onto the gear shaft. Be sure to align the pin on the shift rod with hole in the friction wheel assembly. See Figure 29.

•Reassemble gear shaft and the wheels. Reattach the frame cover. Flip snow thrower back to its operating position and remove any plastic from under the machine or around the gas cap if you had put it earlier.

Off-Season Storage

WARNING: Never store the machine or fuel container indoors where there is an open flame, spark or pilot light such as on a water heater, furnace, clothes dryer or other gas appliances.

WARNING: Drain fuel into an approved container outdoors, away from open flame. Allow engine to cool. Extinguish cigarettes, cigars, pipes, and other sources of ignition prior to draining fuel. Fuel left in engine for extended period deteriorates and will cause serious starting problems.

If unit is to be stored over 30 days, prepare for storage as follows:

•Remove gasoline from carburetor and fuel tank to prevent gum deposits from forming on these parts and causing possible malfunction of engine.

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MTD 644E, 664G manual Friction Wheel Rubber, Off-Season Storage, Drive Belt
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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.
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