Echo SC-2013, Operator'S Manual

16

3 INCH CHIPPER/SHREDDER

SERVICE & MAINTENANCE

WARNING

BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE, 

AND MAKE SURE ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.

On the chute side bearing, tap punch in a CW rotation. 
On the engine side bearing, tap punch in a CCW 
rotation.

NOTE

1.  Remove the lower belt guard from under engine 

frame, remove discharge door/shield and discharge 
screen.

2.  Remove the 10-24 × 1-3/8" bolts and nuts from knife 

shafts.

3.  Align shaft with the 5/8" hole in rear of frame and the 

small hole in front of frame by the chipper chute.

4.  Using a small punch or rod, push the shaft out the 

5/8" hole in rear of frame.

5.  To assemble, insert shaft through the 5/8" hole in rear 

of frame and slide knives and spacers in their proper 
order onto the shaft. 

Install a new 10-24 × 1-3/8" 

bolt and nut.

6.  Repeat steps 3 through 6 to assemble the other three 

shafts.

7.  When completed, install the discharge screen, 

discharge door shield and torque all 3/8" bolts to 
33 ft-lbs. Test run machine.

The serrated edge of the shredder knives should face 
the same direction as the cutting edge of the chipper 
blades. Never reuse the #10-24 nut and bolt. Never 
reuse shafts or spacers if they show signs of wear or 
abuse. Always install new parts when repairing.

WARNING

The chipping blades should clear the anvil by 1/16" to no 
greater than 1/8". Check the clearance every 8 hours of 

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1.  Remove the rotor shaft end cap and lower belt shield.

2.  Loosen the set screws (1) holding the lock collars 

(2) on the chute side (Figure 5.6) and engine side 
(Figure 5.7) bearings.

3.  Use a punch and hammer in punch hole (3) to tap 

the lock collars in the opposite direction of normal 
rotation. 

Figure 5.5, Examples of Damage to Knives

Do not attempt to sharpen shredder knives. Inspect the 
knives often for signs of damage. 

If a knife has any sign of cracking or is broken in any way, 
it should be replaced immediately.

5.7 SHREDDER KNIVES MAINTENANCE

Figure 5.6, Chute Side Bearing

1

2

3

Figure 5.7, Engine Side Bearing

2

1

5.8 REMOVING THE SHREDDER KNIVES

5.9 ADJUSTING THE CHIPPER ANVIL