Troy-Bilt Polar Blast 4510 Snow Thrower Operator's Manual page 19

3. Pull the brake bracket assembly towards the cable guide
roller and unhook the auger cable "Z" fitting. Refer to
Figure 7-5.
Figure 7-5
4. From both sides of the frame assembly, use a 1/2"
wrench to remove the three hex tap screws securing the
transmission frame to the auger housing assembly. Refer to
Figure 7-1. Do not remove the lower hex flange lock nut on
each side.
5. Place a block of wood underneath the auger housing as
shown in Figure 7-6 and separate auger housing from the
transmission frame by tilting the housing forward and
pulling up the handles.
Figure 7-6
6. Block the impeller with a piece of wood to prevent from
spinning and use a 1/2" wrench to remove the hex screw
and flat washer from the center of the auger input shaft
and auger pulley adapter. Refer to Figure 7-7.
7. 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 7-7.
z-fitting
NOTE: The pulley adapter may slide off the auger input shaft
when removing the pulley. Use extra caution to ensure the
adapter does not fall and get damaged when removing the
pulley.
8. Place the new auger belt in the V-groove of the auger
pulley and place the pulley w/belt inside the belt keepers.
9. Turn the pulley as necessary to align its three slots 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 7-7.
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 7-7.
10. Slide the washer onto the hex screw removed earlier and
apply Loctite 262 to the threads of the hex screw.
11. 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.
12. If also replacing the drive belt, proceed to the "Drive Belt"
instruction. If not, reposition the transmission frame back
onto the auger housing. Install the drive belt on the engine
pulley, re-connect the auger cable "Z" fitting and auger
idler rod ferrule to the brake bracket. Reposition and secure
the engine pulley belt guard, and re-install the belt cover.
Pulley Slot
A
Figure 7-7
Adapter Post
B
C
Belt Keeper
S 7 — S 19
ection ervice