35
02/02
GENERAL MAINTENANCE
KNIFE GRINDING
Sharp knives cause less wear on the machine and in-
crease fuel economy. The Chipper is equipped with
double edged chipper knives. When one cutting surface
of the knife becomes dull, simply reverse the knives.
The time between knife sharpenings will depend on many
factors, such as:
a. Species of wood.
b. Weather conditions: rain causes the trees to pick
up soil while being dragged to the chipping site
Soil is extremely hard on knives.
c. Amount of chipper production.
d. The quality of the knife. Knives should be sharp-
ened professionally with a coolant type surface
grinder (MORBARK INC.. knives are
recommended.)
Knives should be ground at 31 degrees.
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