Oregon 720-120 Original Instruction Manual page 27

720-120
3 Pull the chain around by hand to make sure
that it runs freely in the chain vise and does
not wobble.
CAUTION If the chain does not run
freely, or if the chain is forced down into the
groove by pressure from the air tensioner, it
can get caught during the feed.
Adjust the groove width with the adjustment
bolts. The groove must be the same width
as the drive link or 0.2 mm wider.
a) Use the adjustment bolts to adjust the
width of the groove. Tighten the nuts until
the chain is fixed, then loosen them about
1/2 turn.
b) Check manually that the chain moves
freely in the vise, and that the vise is not too
wide. If necessary, repeat step a).
4 Loosen the locking handle and move the
tensioner upward or downward to make
enough room to position the chain.
585124ab_Auto Chain Grinder_OM_720-120.indd 27
5 Operation
5 Lift the tensioner arm (there is a quick
release function) and place the chain below
the tensioner roll.
6 Lower the tensioner arm to its bottom
position.
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