Echo Bear Cat 70580S - Manual (Page 13)

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E C T I O N
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5. Once clearance has been set, the lock collars must
be replaced to retain setting. Slip the lock collars
over the eccentric hub on the bearings. Using a
punch and a hammer, rotate the lock collars in the
direction of shaft rotation (i.e. clockwise on the rear
bearing and counter-clockwise on the front bearing)
and "set" them with a positive hammer tap. Tighten
the lock collar set screws.
6. Loosen the set screws holding the belt pulley on the
rotor shaft. Move the pulley on the shaft so it is
aligned directly below the similar pulley on the
engine shaft (the pulley should be moved an equal
but opposite amount the rotor was moved).
7. Insure the pulley drive key is completely seated
under the pulley and tighten the set screws.
8. Replace the lower belt guard, discharge screen, and
plastic bearing cap.
3.1.3 Replacing Shredder Kit
Care must be taken to insure knives and spacers are
installed properly to maintain rotor balance.
1. Remove discharge cover, screen and rotor end cap.
2. Loosen the set screws holding the lock collar on the
chipper chute side rotor bearing.
3. Using a punch and hammer, tap the lock collar in a
direction opposite of normal rotation until loose and
remove.
4. Remove chipper chute cover bolts and remove the
chute.
5. Remove #10-24 bolt and nut from knife shaft #1,
slide knife shaft from rotor assembly and discard
old shaft, spacers, bolt and knives.
6. Insert new shaft, knives, spacers, bolt and nut in
shaft #1 location (note order of assembly on draw-
ing). Be sure of the order the spacers are installed
on the shafts. If the spacers are not installed prop-
erly, the rotor will be out of balance and also will
not have proper shredding action.
7. Repeat steps #5 & #6 for shafts 2,3, and 4. Make
sure to install knives and spacers in the proper order
as shown on the drawing.
8. Reinstall chipper chute onto frame and tighten
bolts.
9. Reinstall discharge screen and discharge cover and
test run.
On later model serial number machines #11010 and
above the shredder kit can be installed in the
machine without removing the chipper chute.
1. Remove belt guards from under the engine frame,
remove discharge cover and screen.
2. Remove #10-24 nuts and bolts from the knife
shafts.
3. Align shaft with 5/8 inch hole in rear of frame and
small hole in front of machine by the chipper chute.
4. Using a small punch or rod, drive the shaft towards
and out the rear 5/8 inch hole.
5. To assemble, insert shaft through 5/8 inch hole in
rear of the frame and slide knives and spacers in
their proper order onto the shaft. Install a new #10-
24 nut and bolt.
6. Repeat steps #3 through #5 to assemble the other
three shafts.
NOTE: Never reuse rotor shafts or bolts and nuts if they
show signs of wear or abuse. Install new ones.
3.1.4 Cleaning Plugged Rotor
WARNING! If the machine becomes plugged,
shut off the engine, disconnect the spark plug
wire and allow the machine to come to a
complete stop before clearing debris. Do not
operate machine without proper guards and
screens in place.
1. Stop engine, disengage rotor clutch and allow
machine to come to a complete stop. Remove the
spark plug wire.
2. Remove 5/16 inch bolt holding the discharge screen
in place. Pull the screen out of the machine.
3. Clean the debris out of the shredding rotor. Turn the
rotor by hand to be sure it is free to rotate.
4. Replace discharge screen by inserting top lip of
screen into slot inside machine and rotate screen
downward until bolt hole in screen bottom aligns
with hole in machine.
5. Replace spark plug wire, restart engine and resume
operation.