Echo 71825 - Manual (Page 14)

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1. Remove large belt guard (three 5/16" bolts).
2. Loosen bolts on hydraulic pump and remove belt.
3. Lift belt idler pulley off drive belt and remove drive belt from pulleys.
4. Install new belt on pulleys and lower belt idler. Check alignment of pulleys
and adjust if needed.
5. Adjust the eyebolt that anchors the idler spring to adjust belt tension.
Tighten the eyebolt until the belt deflection at the center of the belt is
7/16" when a 20 lb load is place against the belt (see figure 8).
6. Replace hydraulic pump belt. Readjust hydraulic pump belt tension by
sliding the hydraulic pump in the mounting slots. Tighten bolts.
7. Replace belt guard.
8. Depress foot clutch pedal, start engine, release foot clutch pedal to
engage belt, and test unit. Readjust pulleys and belt tension if needed.
WARNING: If the machine becomes plugged, depress foot clutch
pedal, 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 the machine without proper guards and screens in place.
Feeding too large or too much chipable material at once may plug the chipper.
To clear plugged rotor, proceed as follows:
1. Depress foot clutch pedal and stop engine. Release foot clutch pedal when
engine is stopped.
2. Remove the two 3/8" retaining bolts holding the access cover to the main
frame assembly.
3. Lift up rotor access cover.
4. Clean the debris out the chipper rotor. Turn the rotor by hand to be sure it is
free to rotate.
5. Close rotor access cover and replace bolts.
6. Depress foot clutch pedal, and start engine. Release foot clutch pedal
when engine is running to engage drive belt. Resume operation.
CAUTION: Remember to use rotor shaft lock when working on rotor.
1. Remove the two 3/8 inch retaining bolts holding access cover to main
frame assembly. Tilt access cover over to allow rotor access.
2. Remove large belt guard (three 5/16 inch bolts).
3. Lift belt idler pulley off drive belt and remove belt from pulleys. Using the
push bolts from the bushing, remove the bushing and pulley from the rotor
shaft.
WARNING: The rotor assembly has a lock mechanism. When working
on the rotor assembly, use the lock mechanism at all times. Remove
plastic bearing cover under the chipper chute. There is a hole in the
rotor jack shaft and a matching hole in the bracket mounted to the
rotor bearing front side. Install a punch through the rotor shaft and bracket to
lock the rotor in place.
Clearing Plugged
Rotor
Repairing or
Replacing Rotor
Bearings
Replacing Drive
Belt-Hydraulic
Models