6

Maintaining

Your Snow

Thrower

WARNING

Before lubricating, repairing or inspecting, disengage all controls and stop engine. Wait until all moving parts have come to a complete stop. Remove the safety key to prevent unintended firing of the engine.

IMPORTANT

Refer to the Final Adjustment section of the Set-Up instructions after replacing drive and auger belts.

8.Place a block of wood underneath the auger housing as shown in Figure 6-9 and separate auger housing from the frame by tilting the housing forward and pulling up the handles.

9.Block the impeller with a piece of wood to prevent if from spinning and use a 1/2” wrench to remove the hex screw and washer from the center of the pulley on the auger housing. See Figure 6-10.

10.Lift the brake bracket assembly out of the pulley groove and slide the pulley assembly off the posts of the auger pulley adapter to remove the old belt. Refer to Figure 6-10.

NOTE: The pulley adapter may slide off the auger input shaft when removing the pulley. Use extra caution to ensure the adapter does fall and/or get damaged when removing the pulley.

11.Place the new auger belt in the V-groove of the auger pulley and place the pulley w/belt inside the belt keepers.

12.Turn the pulley as necessary to align its three slots approximately with the posts of the pulley adapter, then move the brake bracket assembly away from the input shaft. While aligning the pulley slots and adapter posts, push the auger pulley fully onto the adapter. Refer to Figure 6-10.

NOTE: If the pulley adapter was removed with the pulley, align the splines of the pulley adapter and auger input shaft, and push the pulley and adapter onto the input shaft. Refer to Figure 6-10.

13.Slide the washer onto the hex screw removed earlier and apply Loctite 262 to the threads of the hex screw.

14.Insert the hex screw through the pulley assembly and into the threads of the input shaft. Torque the hex screw to 250-325 in./lbs. to secure the auger pulley assembly on the input shaft.

If also replacing the drive belt, proceed to the “Drive Belt” instruction. If not, reassemble by performing the previous steps in the opposite order and manner of removal.

NOTE: Make sure to remove the piece of wood blocking the impeller.

Proper Adjustment: With the auger clutch lever in the disengaged position, the top surface of the new belt should be even with the outside diameter of the pulley.

1.To adjust, disconnect ferrule from brake bracket assembly and thread ferrule in (towards idler) to increase tension on belt, and out to decrease tension. See Figure 6-6.

NOTE: The brake puck must always be firmly seated in the pulley groove when auger control is disengaged.

IMPORTANT: Repeat the “Auger Drive Control Test” from the Assembly section before operating snow thrower.

Figure 6-9

B

Adapter Post

 

C

Pulley Slot

A

Figure 6-10

3

1b

1a

2

Figure 6-11

Drive Belt

1.If not already done, remove auger belt as previous instructed.

a.Pull the idler pulley away from the backside of the drive belt to relieve the tension.

b.Slide the drive belt off the idler pulley. See Figure 6-11. Carefully release the idler pulley.

2.Remove the belt from the bottom drive pulley.

3.Remove the belt from the engine pulley.

18

Page 17 Page 19
Page 18
Image 18
MTD 769-04101 warranty Drive Belt, Pulley Slot
Page 17 Page 19

769-04101 specifications

The MTD 769-04101 is a versatile and robust lawn mower designed to deliver efficient performance for both residential and commercial users. Known for its reliability, it offers a host of features that cater to various mowing needs.

One of the standout characteristics of the MTD 769-04101 is its powerful engine. Equipped with a formidable 420cc engine, this mower ensures a strong performance while cutting through thick grass and challenging terrains with ease. The engine is designed for fuel efficiency and minimal emissions, making it an eco-friendly option for users concerned about their carbon footprint.

The MTD 769-04101 features a wide cutting deck, typically measuring 42 inches. This size allows for efficient mowing of large lawns, reducing the time spent on maintaining grassy areas. The deck is constructed from durable materials, ensuring longevity and resilience against wear and tear. With several cutting height options available, users can easily adjust the mower to meet the specific needs of their lawn, achieving a perfect cut every time.

In terms of technology, the MTD 769-04101 includes a reliable electric start system. This feature eliminates the struggle of pull-starting, providing a convenient and user-friendly operation. The mower's transmission system allows for smooth gear shifts, contributing to an overall comfortable mowing experience.

Safety is paramount with the MTD 769-04101. It comes equipped with features such as an automatic blade brake, which ensures that the blades stop quickly when the user releases the handle. This adds an extra layer of protection, making it safer in environments where children or pets may be present.

Another highlight is the mower's ergonomic design. The adjustable handlebar ensures that users of different heights can operate the machine comfortably. Additionally, the mower's maneuverability is enhanced by a tight turning radius, allowing users to navigate around obstacles easily.

Maintenance of the MTD 769-04101 is straightforward thanks to its user-friendly design. The mower provides easy access to various components, ensuring that routine checks and maintenance tasks can be performed without hassle.

Overall, the MTD 769-04101 is a powerful, efficient, and user-friendly choice for anyone looking for a reliable lawn mower. Its combination of technology, safety features, and ergonomic design makes it an excellent investment for maintaining any lawn.
Top Page Image Contents