Troy-Bilt 769-04090 Benutzerhandbuch

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.

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

A

C

B

Pulley Slot

Adapter Post

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.

1b

2

1a

3