Echo CH611DH Owners Manual v.4 - Manual (Page 21)

17 6 INCH CHIPPER
ENGLISH
SERVICE & MAINTENANCE
BEFORE INSPECTINg OR SERVICINg ANy PART OF THIS MACHINE, SHuT OFF POWER SOuRCE,
DISENgAgE THE HyDRAulICS, AND MAKE SuRE All MOVINg PARTS HAVE COME TO A COMPlETE STOP.
WaRNING
45˚
SHARPENED
SURFACE
MOUNTING SURFACE
(DO NOT GRIND)
.50”
SHARPENED
SURFACE
MOUNTING SURFACE
(DO NOT GRIND)
Chipper blade sharpening angles
5.4 SHaRpENING THE bLaDES
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 figure 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.
5.5 aDJuSTING THE CHIppER aNvIL
lift rotor access cover and expose rotor. 1.
Measure the amount of clearance between chipping 2.
blade and chipper anvil from inside of housing.
Loosen the three 1/2 inch bolts that hold the chipper 3.
anvil to the frame (see below).
Adjust inward or outward to the desired measurement, 4.
using the adjustment nuts provided.
Tighten bolts on chipping block to 75 ft-lbs. and resume 5.
operation.
If chipper anvil edge is damaged or worn unevenly, remove
the three bolts holding the anvil and use one of the other
three edges. Replace as necessary.
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: