Troubleshooting&Repair

Figure 35. Remove Discharge Tube Hex Head Cap

Figure 36. Loosen Discharge Tube Hex Head Nuts -

Screw And Hex Nut

Left Side

13.Rotate the rotor to move the first chipping knife into position at the rear opening in the shredding cham- ber. Pulling slowly on the starter rope will make the rotor rotate.

14.Insert a l/Z” thick x 1 l/2” - 2” wide x IO - 12” long piece of wood into the chipping/shredding chamber under the sharp edge of the chipper knife. This will support the knife as it is disassembled from the rotor, and prevent the rotor from turning as the mounting screws are removed.

15.Using an allen wrench or hex bit socket, unscrew the two cap screws that secure the chipper knife to the rotor. It may be helpful to clean out the sockets on the cap screws with a smaller allen wrench or piece of bent wire before attempting to remove the screws (Figure 38).

16.Carefully remove the chipper knife by pulling the board slowly out of the chipping/shredding chamber. Avoid touching the sharp edge of the blade with bare hands as even a “dull” chipping edge can inflict a serious cut.

17.Rotate the rotor and remove the other chipper knife following the same procedure.

18.Sharpen both knives equally or replace both to ensure proper balancing and correct chipping action.

Chipping knives may be resharpened until the dis- tance between the mounting holes and the top edge of the blade bevel is l/16” apart (Figure 39).

Slow speed water-cooled grinding is suggested to help maintain blade temper and a long lasting sharp edge. Rapid grinding and heating of blades will soften the edges, making repeated sharpen- ing necessary.

Figure 37. Remove Discharge Tube

Figure 36. Remove Chipper Knives

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Image 34
Simplicity 8/25, 6/25 manual Remove Discharge Tube Hex Head Cap