Echo 76854 - Manual (Page 21)

PTO CHIPPERS 17
ENGLISH
SERVICE & MAINTENANCE
Before inspecting or servicing any part of this machine, shut off power source,
and make sure all moving parts have come to a complete stop.
WARNING
5.5 aDJusTInG THe CHIPPer anVIl
1. Remove the two 3/8" bolts on the rotor access cover.
2. lift rotor access cover and expose rotor.
3. Measure the amount of clearance between chipping
blade and chipping anvil from inside the housing.
4. loosen the three 1/2 inch bolts that hold the chipper
anvil to the frame. The bolts are accessed underneath
the feed roller (see picture below).
5. Adjust anvil inward or outward to the correct clearance.
check how all blades clear the anvil.
6. Tighten bolts on chipping anvil to 75 ft. lbs. and bolt
rotor access cover closed.
If the chipping anvil edge is damaged or worn unevenly,
remove the three bolts holding the anvil and use one of the
other three edges. Adjust for correct measurement.
Arrow points to chipper anvil
5.4 sHarPenInG THe BlaDes
45˚
SHARPENED
SURFACE
MOUNTING SURFACE
(DO NOT GRIND)
.50”
SHARPENED
SURFACE
MOUNTING SURFACE
(DO NOT GRIND)
The blades can be ground on a bench grinder or by a
professional.
1. Never sharpen or grind the mounting surfaces of the
blades. This will cause the edge to roll and the blade will
be damaged, resulting in poor chipping performance.
2. Regrind the angled edge of the chipping blades to 45
degrees (see below). Make sure some type of fixture
is used to correctly hold the blade at the proper angle.
3. Be careful when grinding so that the blade does not
become overheated and change color. This will remove
the heat-treated properties.
4. use short grinding times and cool with water or some
type of liquid coolant.
5. Remove an equal amount off each blade to maintain
rotor balance.
6. Small imperfections such as nicks and burrs on
the flat side of the blade will not affect the chipping
performance of the machine.
7. For blades that have been repeatedly sharpened,
ensure that the sharpened surface extends past the
chipping slot opening. If it does not extend past the
opening, the blades should be replaced.
The chipping blades should clear the anvil by 1/16 inch to
1/8 inch. check the clearance every 8 hours of operation
and adjust if needed. The chipping anvil is reversible. All
four sides of the anvil can be used for chipping.
To adjust the anvil:
for the remaining blades.
For model CHF9540H. Place a blade on the disk
and attach using two (2) 5/16” x 1-1/4” bolts and 5/16”
washers. Torque the bolts to 25 ft.-lbs. Repeat for the
remaining blades.