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Echo Bear Cat SC5670 User Manual

Instructions, Warning, Important

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Instruction Sheet

Instructions

PN 70975

Rev. 051112

SUBJECT: RECTANGULAR
SHREDDER KNIFE KIT # 70972

FITS MODELS: ALL 5" CHIPPER/
SHREDDERS

Before inspecting or servicing any part of this machine,

shut off power source, remove key, disconnect the

battery cables and make sure all moving parts have

come to a complete stop.

WARNING

The Rectangular Shredder Knife Kit is a replacement kit

to replace existing dull or damaged knives. The serrated

shredder knives are designed to offer long life and can be

reversed if they become dull. Note the instructions differ

for chipper/shredders and chipper/shredder/blowers.

NOTE

Care must be taken to insure the knives and spacers

are installed properly to maintain rotor balance.

INSTALLATION STEPS FOR 5" CHIPPER/

SHREDDER

REFER TO THE FIGURES ON THE BACK OF THIS

PAGE DURING INSTALLATION.

Remove discharge cover and discharge screen.

1.

Remove rear side access cover.

2.

Work with one knife shaft at a time. Remove #10-24

3.

bolt and nut from knife shaft and discard, do not

reuse.
Using a hammer and punch, drive the knife shaft

4.

through the access hole on the rear of the machine.
Remove spacers and shredder knives. Be careful to

5.

keep track of the order the spacers were installed

on the shafts so they can be returned to the original

locations. If the spacers and knives are not installed

correctly, the rotor will be out of balance and will not

have proper shredding action.
Replace knives and reassemble back into the rotor.

6.

Install new #10-24 bolt and nut though the spacer and

shaft and retorque to 36 in lbs.

The serrated edge of the shredder knifes should face

the same direction as the cutting edge of the chipper

blades. Never reuse the #10-24 nut and bolt, always

install new parts when repairing. Never reuse shafts

or spacers if they show signs of wear or abuse. Install

new ones.

IMPORTANT

Complete service of all six shafts in this same

7.

process.
Install access cover, discharge screen, and discharge

8.

cover, torque all 3/8” bolts to 33 ft lbs. and test run

machine.

INSTALLATION STEPS FOR 5" CHIPPER/

SHREDDER/BLOWER

REFER TO THE FIGURES ON THE BACK OF THIS

PAGE DURING INSTALLATION.

Loosen and remove the 3/8” carriage bolt securing

1.

the chipper top.
Open the chipper top cover exposing the chipper

2.

shredder compartment.
Work with one knife shaft at a time. Remove #10-24

3.

bolt and nut from knife shaft and discard, do not

reuse.
Remove the knife shaft.

4.

Remove spacers and shredder knives. Be careful to

5.

keep track of the order the spacers were installed

on the shafts so they can be returned to the original

locations. If the spacers and knives are not installed

correctly, the rotor will be out of balance and will not

have proper shredding action.
Replace knives and reassemble back into the rotor.

6.

Install new #10-24 bolt and nut though the spacer and

shaft and retorque to 36 in lbs.

The serrated edge of the shredder knifes should face

the same direction as the cutting edge of the chipper

blades. Never reuse the #10-24 nut and bolt, always

install new parts when repairing. Never reuse shafts

or spacers if they show signs of wear or abuse. Install

new ones.

IMPORTANT

Complete service of all six shafts in this same

7.

process.
Close access cover and replace the 3/8” carriage bolt

8.

and tighten to 33 ft lbs. Test run the machine.