Oregon 530-120H Original Instruction Manual page 29

520-120 / 530-120H
Once you have sharpened the first cutter,
raise the motor unit with handle (E)
Loosen the vise handle (15)
OPERATING INSTRUCTIONS
Advance the chain forward to position
the next cutter to be sharpened, assuring
that the chain stop (12) is seated firmly
against the rear of the cutter
Clamp chain again with the vise handle
(15) and sharpen the next cutter
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