Echo Bear Cat 70580S - Manual (Page 14)

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3.1.5 Replacing Drive Belts
Check the condition of the drive belts annually or every
30 hours of operation, whichever comes first. If the belt
is cracked, frayed or worn, it should be replaced. To
replace the belt, proceed as follows:
1. Remove the spark plug wire.
2. Remove the upper and lower belt guards.
3. Slip the drive belt off the pulleys. If necessary,
loosen the engine bolts and tip the engine forward
to allow the belt to slip off the pulley.
4. Inspect pulleys for wear. Replace the pulleys if they
are cracked or worn so that the belt contact area is
not smooth and flat.
5. Place new belt over pulleys. Do not force or pry the
belt over pulleys as this may cause cord breakage. If
necessary, loosen engine mounting bolts and tip the
engine forward to allow the belt to be easily placed
over the pulley.
6. Align the engine so the crankshaft is parallel to the
rotor shaft. Tighten engine mounting bolts to 20 ft.
lbs. torque.
7. Check pulley alignment. Place a straightedge across
the face of both pulleys to inspect. If necessary,
loosen the set screws on both pulleys and move
them so that they are directly in line. Be sure that
the idler pulley contacts near the center of the belt.
Retighten the pulley set screws.
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8. Replace upper and lower belt guards. Allow 1/8
inch clearance between top of belt and inside of
lower belt guard. make sure all bolts, nuts and
fasteners are properly torqued to 20 ft. lbs.
3.1.6 Changing Discharge Screens
Optional dischage screens with different hole sizes can
be purchased and used in your chipper/shredder. To
change the screen proceed as follows:
1. Stop engine, disengage rotor clutch and allow
machine to come to a complete stop. Remove spark
plug wire from spark plug.
2. Remove the 5/16 inch bolt in the bottom center
holding the discharge screen in place. Pull the
screen out of the machine and set aside.
3. Clean any trash or debris out of the screen area.
4. Place optional screen in machine. Hook top lip of
screen into slot and rotate screen downward to align
hole in screen with hole in machine. Place bolt
through machine and screen, attach nut and tighten.