Making The Grinding Settings - Oregon 730-120 Original Instruction Manual

730-120

5.2.5 Making the grinding settings

CAUTION! Do not change the pitch
setting. The default setting is for 3/4" chains.
If there is a problem with the pitch, see
"7.3 Changing the pitch" on page 39 for
instructions on how to change the pitch
setting.
1. Press the power button to turn on the
machine.
2. Press the grinding head positioning button
to move the grinding head so that it is tilted
in the correct start position for the next
cutting link to be ground.
3. Lift the grinding head to its uppermost
position.
4. Set the chain pusher switch to ON. The
chain pusher arm now advances the chain
forward.
5. Visually make sure that the chain pusher
stops its movement exactly above the rivet
behind the cutter, as illustrated in the image
below.
6. Set the chain pusher switch to OFF when
the grinding head is in its uppermost
position and the chain lock is not engaged.
7. Repeat steps 5-8 until the chain pusher
stops in the correct position.
8. Turn the grinding speed knob to set the
desired speed for the machine.
IMPORTANT If the metal of a cutter
turns blue during grinding, the speed is set
too high and the metal is overheated. This
can cause the metal in the cutter to loose its
properties. Replace the damaged cutter or
re-sharpen the chain.
Operation
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