Friction

 

 

 

Wheel

 

Support

 

 

 

 

Bracket

 

 

 

 

Rear Auger

 

 

 

Frame

Belt

 

 

 

 

 

 

 

Front Auger

 

 

 

Support

Pulley

Auger

 

Auger

Bracket

 

Pulley

Idler

Housing

Spring

 

 

Spring

 

Figure 15

Drive Belt

Follow steps 1 through 4 of previous instructions.

Pull idler pulley up, and lift belt off engine pulley and friction wheel disc. See Figure 14.

Back out the stop bolt until the support bracket rests on the auger pulley. See Figure 16.

Slip belt between friction wheel and friction wheel disc. Remove and replace belt. Reassemble following the instructions in reverse order.

NOTE: The support bracket must rest on the stop bolt after the new belt has been assembled. See Figure 25.

Friction

Friction Wheel

Wheel

 

Disc

 

 

Drive Belt

Stop

Bolt

Support Bracket

Drain the gasoline from the snow thrower, or place a piece of plastic under the gas cap.

Tip the snow thrower up and forward, so that it rests on the housing. See Figure 17.

 

Hex Nut and

Chute

Bell Washer

Note: The unit is shown resting on its auger housing

Auger

Figure 17

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

Remove the klick 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 left end of gear shaft. See Figure 17.

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

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

Remove the four screws from the friction wheel assembly. Remove the friction wheel rubber from between the plates. See Figure 18.

Plates

Bearing

Screws

Hub

Friction Wheel Rubber

Figure 18

Figure 16

Changing Friction Wheel Rubber

The rubber on the friction wheel is subject to wear and should be checked after 25 hours of operation, and periodically thereafter. Replace the friction wheel rubber if any signs of wear or cracking are found.

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

Position the friction wheel assembly up onto the pin of the shift rod assembly, and slide the shaft through the assembly. Reassemble the wheels and the frame cover.

14

Page 14
Image 14
MTD 31AE640F352 manual Changing Friction Wheel Rubber, Drive Belt

31AE640F352 specifications

The MTD 31AE640F352 is a powerful and versatile engine designed for a variety of applications, particularly in the field of outdoor power equipment. Recognized for its reliability and performance, this engine is a perfect choice for lawn mowers, tillers, and other landscaping tools.

One of the standout features of the MTD 31AE640F352 is its robust construction. The engine utilizes a cast-iron cylinder sleeve, which not only enhances durability but also improves heat dissipation. This is crucial in maintaining optimal operating temperatures, especially during prolonged use. The engine's design is engineered for easy maintenance, making it user-friendly for both professionals and hobbyists.

The MTD 31AE640F352 is powered by a four-stroke engine, which contributes to its efficiency and fuel economy. With a displacement of 196cc, this engine provides ample power for a range of tasks while ensuring low emissions, adhering to environmental regulations. The engine's overhead valve (OHV) design allows for better airflow and greater combustion efficiency, resulting in improved torque and horsepower.

Additionally, the MTD 31AE640F352 features an integrated recoil starter and a primer bulb, which facilitate quick and effortless starting, even in cold conditions. This ensures that users can get to work without delays, maximizing productivity. The engine's air filtration system is designed to minimize dust and debris intake, prolonging the engine's lifespan and reducing maintenance frequency.

Another notable characteristic is the quiet operation of the MTD 31AE640F352, making it a suitable choice for residential areas where noise regulations may be a concern. The engine operates smoothly with reduced vibration, providing a comfortable experience for the user.

In terms of versatility, this engine can be found in various MTD products, showcasing its adaptability across different applications. Whether it’s powering a lawn mower or a snow blower, the MTD 31AE640F352 delivers consistent performance, meeting the needs of various outdoor tasks.

Overall, the MTD 31AE640F352 stands out in the engine market for its combination of power, efficiency, and user-friendly features. With its reliable performance and durable construction, it continues to be a preferred choice for numerous outdoor power equipment applications, catering to both residential and commercial users alike.