Echo Bear Cat SC5670 User Manual
Instructions
SUBJECT: RECTANGULAR
SHREDDER KNIFE KIT # 70972
FITS MODELS: ALL 5" CHIPPER/
SHREDDERS
WARNING
IMPORTANT
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.
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.
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.
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.
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.
IMPORTANT
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.
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.
Instruction Sheet
PN 70975
Rev. 051112
SHAFT 5
SHAFT 4
SHAFT 3
1
2
3
4
5
6
7
8
9
9
9
1
2
1
2
7
7
6
5
SHAFT 1
SHAFT 2
SHAFT 3
SHAFT 4
SHAFT 5
SHAFT 6
NOTE: SHAFT SIX IS THE SAME AS SHAFT THREE, SHAFT FIVE IS THE SAME AS SHAFT TWO, SHAFT FOUR IS THE
SAME AS SHAFT ONE.
ITEM PART NUMBER DESCRIPTION QTY.
SHREDDER KNIFE KIT (P/N 70972)
1 15397 NUT, #10 X 24 NYLOCK 6
2 15466 SCREW, 10-24 X 1-1/8 6
3 70367 SHORT SPACER .75 X .59 (LARGE C/S) 10
4 70368 SHORT SPACER-BORED .75 X .59 W/HOLE (LARGE C/S) 2
5 70369 SPACER, .75 X 1.18 8
6 70370 MEDIUM SPACER - BORED .75 X 1.18 W/HOLE (LARGE C/S) 4
7 70371 LONG SPACER .75 X 1.47 (LARGE C/S) 18
8 70381 ROTOR KNIFE SHAFT (LARGE C/S) 6
9 70856 SHREDDING KNIFE, RECTANGULAR 36
Phone: 701.282.5520 • Toll Free: 800.247.7335 • Fax: 701.282.9522
E-mail: service@bearcatproducts.com • sales@bearcatproducts.com
ECHO BEAR CAT
www.bearcatproducts.com
237 NW 12th Street, West Fargo, ND 58078-0849
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