Drive Belt

6

Maintaining

Your Snow

Thrower

WARNING

Always stop engine, disconnect spark plug, and ground against engine before cleaning, lubricating or doing any kind of maintenance on your machine.

IMPORTANT

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

Figure 28

9.Place a block of wood underneath the auger housing as shown in Figure 29 and separate auger housing from the frame by tilting the housing forward and pulling up the handles.

10.a. Using a 1/2” wrench, remove the hex screw and washer from the center of the pulley on the auger housing. See Figure 30.

b.Lift the brake bracket assembly out of the pulley groove

c.Remove the pulley.

11.Remove and replace auger belt inside belt keepers.

12.Apply Loctite 262 to the threads of the hex screw used for mounting the auger pulley.

13.Reassemble pulley to auger housing with hex screw and washer. Torque hex screw 250-325 in. lbs.

NOTE: Make sure the brake puck is seated in the pulley groove.

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.

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 as- sembly and thread ferrule in (towards idler) to increase tension on belt, and out to decrease tension.

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

Drive Belt

1.Pull the idler pulley away from the backside of the drive belt to relieve the tension and slide the drive belt off the idler pulley. See Figure 31.

2.Remove the belt from the bottom drive pulley and the engine pulley.

Figure 29

BB

C

A

 

Figure 30

1

3

2

Figure 31

3.Install the new belt on the pulleys in the reverse order and re-tension with the idler pulley.

Reassemble your unit by performing the previous steps in the opposite order.

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MTD 769-03247 warranty Maintaining Your Snow Thrower, Drive Belt, B C A