3.Using a 1/2” wrench, remove the chipper chute by removing three hex nuts and washers.
Model 465A only
Allen Screws
4.Use a 7/16” wrench, to remove the brace holding the chipper chute to the frame by
removing the hex bolts. | Weld Bolt |
|
All models
5.Rotate the impeller assembly by hand until you locate one of the two chipper blades in the chipper chute opening. Remove the blade, using a 3/16" allen wrench on the outside of the blade and 1/2" wrench on the impeller assembly (inside the housing).
Slot
Blade
Figure 8
6.Remove the other blade in the same manner.
7.Replace or sharpen blades.
8.If sharpening, make certain to remove an equal amount from each blade.
9.Reassemble in reverse order. Make certain blades are reassembled with the sharp edge facing the direction shown in Figure 8 (sharp edge is assembled toward the slotted opening at the bottom).
10.Torque bolts and nuts to
SHARPENING OR REPLACING THE SHREDDER BLADE
The shredder blade may be removed for sharpening or replacement as follows. See Figure 9
1.Disconnect spark plug wire and move it away from spark plug.
2.Lower the hopper assembly. Block up the housing.
Pipe
Torque Wrench | Blade |
| |
Figure 9 |
|
3.Remove the six hex lock nuts and lock washers from the housing weld bolts using a 1/2" wrench. Separate the
4.Remove the support plate.
NOTE: When reassembling, make certain the embossed tab faces inward towards the impeller, and opening on the support plate is toward the bottom of the unit.
5.Remove the two hand knobs and cupped washers which secure the discharge chute. Raise the discharge chute.
6.Insert a 1/2" or 3/4" diameter pipe through the flail screen into the impeller to keep it from turning, or remove the flail screen and insert a piece of wood (2 x 4) into the chute opening.
7.Remove the two outside screws on the blade, using a 3/16" allen wrench and a 1/2" wrench.
8.Remove the blade by removing the center bolt, lock washer and flat washer.
WARNING: Use caution when removing the blade to avoid contacting the weld bolts on the housing.
9.When sharpening the blade, follow the original angle of grind as a guide. It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade.
10.An unbalanced blade will cause excessive vibration when rotating at high speeds and may cause damage to the unit. The blade can be tested for balance by balancing it on a round shaft screwdriver or nail. Remove metal from the heavy side until it is balanced evenly. See Figure 10
11
