RedMax GZ4000 Owner's/Operator's Manual page 9

5. Installing guide bar and saw chain
7. Tighten the tensioner screw.
(2) Loosen
(3) Tighten
(4) Tensioner screw
NOTE
A new chain will expand its length in the beginning
of use. Check and readjust the tension frequently
as a loose chain can easily derail or cause rapid
wear of itseif and the guide bar.
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