•Pull the brake bracket assembly towards the cable guide roller and unhook the auger cable “Z” fitting.
•Remove the upper bolts and lock washers which attach the auger housing assembly to the frame assembly using a 9/16” wrench. See Figure 16.
•Separate the auger housing from the frame assembly by tilting the housing forward and pulling up the handles.
•Using a 1/2” wrench, remove the hex screw and belleville washer from the center of the pulley on the auger housing. Lift the brake bracket assembly out of the pulley groove and remove the pulley. Be careful not to lose the key. See Figure 18.
Brake Bracket Assembly | Auger Belt | |
Idler Pulley | ||
| ||
| Auger Pulley | |
Belt Keepers | Hex Screw | |
Belleville Washer | ||
|
Figure 18
•Remove and replace auger belt inside belt keepers.
•Reassemble pulley to auger housing with hex screw and belleville washer (cupped side toward the pulley). Make sure key is in place on shaft and brake puck is seated in the pulley groove.
•Reassemble the belt cover and chute directional control.
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.
•To adjust, disconnect ferrule from brake bracket assembly 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 the auger control is in the disengaged position.
Drive Belt
•Unhook the extension spring from the belt cover plate. See Figure 19.
•Remove drive belt from the engine pulley and bottom drive pulley. Refer to Figure 19.
•Replace belt and reassemble in reverse order.
•Reassemble the two halves of the unit hooking the lower portion of the auger housing over the stationary shoulder bolts in the frame assembly.
Belt Cover |
Extension |
Spring |
Drive Belt |
Figure 19
•Secure the two halves with the two bolts and lock washers removed earlier. Refer to Figure 16.
•Attach the “Z” fitting of the cable into the brake bracket assembly. Refer to Figure 17.
•Slip the auger control belt over engine pulley.
•Insert ferrule on auger idler rod into bracket assembly and secure with flat washer and cotter pin. Reassemble the large shoulder bolt and lock washer as shown in Figure 16.
•Reassemble belt cover and chute crank.
Changing Friction Wheel Rubber
The rubber on the friction wheel is subject to wear and should be checked after the first 25 hours of operation, and periodically thereafter. Replace the friction wheel rubber if any signs of wear or cracking are found.
•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.
•Remove six screws from the frame cover underneath the snow thrower. Refer to Figure 10.
•Remove the left wheel from the axle.
•Using a 7/8” wrench, hold the hex shaft and remove the hex bolts and cupped washer and bearing from left side of the frame. See Figure 20.
•Holding the friction wheel assembly, slide the hex shaft out of the left side of the unit. The spacer on the right side of the hex shaft will fall and the sprocket should remain hanging lose in the chain.
•Lift the friction wheel assembly out between the axle shaft and the drive shaft assemblies.
•Remove the six screws from both sides of the friction wheel assembly and remove friction wheel rubber from between the friction wheel plate.
See Figure 20.
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