Echo CH611DH Owners Manual v.4 - Manual (Page 20)

16 6 INCH CHIPPER
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
5.2 CHIppER bLaDE maINTENaNCE
Retaining bolts on main frame access cover
The chipper blades will eventually become dull, making
chipping difficult and adding extra strain on the machine.
CHECK THE SHaRpNESS oF THE bLaDES EvERY
5 - 15 HouRS oF opERaTIoN aND SHaRpEN aS
NEEDED.
The controller light will flash an amber code every 15
hours as a reminder to check the chipper blades. to reset
the controller, see Sec. 6.
your blades need to be sharpened if:
•
Machine vibrates severely when material is fed into the
chipper.
• Small diameter branches do not self-feed.
• Chips discharge unevenly or have stringy tails,
especially when chipping green branches.
Before you sharpen the chipping blades, check for
permanent damage. Replace the blade if:
•
There are cracks, broken corners or nicks greater than
1/8" (see below).
NICK GREATER
THAN 1/8”
CRACK
GREATER
THAN 1/8”
BROKEN
CORNER
NEW
BLADE
CHIPPER
DISC
CHIPPING
SLOT
CHIPPER
DISC
BLADE IS
TOO SHORT,
MUST BE
REPLACED
CHIPPING
SLOT
WaRNING
Chipping blades are sharp! use caution when working
on machine to avoid injury.
5.3 CHaNGING THE bLaDES
Remove the two 3/8" retaining bolts on the access 1.
cover.
tilt access cover open to allow access to rotor. Rotate 2.
the rotor so that the bolts holding the blade in place
are accessible.
Remove the two bolts and washers that hold the blade 3.
to the disk. The hardware can be reused. Repeat for
remaining blade.
the blades have two edges and can be reversed one 4.
time before sharpening.
Place the new or sharpened blade on the rotor and 5.
secure with bolts and washers. Torque to 120 ft-lbs.
• The base of the cutting edge is worn or has been re-
sharpened so that it no longer extends past the chipping
slot (see below).