18
lengthen quickly.
CAUTION:
The guide bar, saw
chain, and saw bearings will wear more
rapidly if the saw chain is not properly
tensioned. Maintaining proper chain
tension will improve cutting
performance and prolong the life of the
saw chain.
WARNING:
To prevent
serious injury, never touch the saw
chain or adjust the chain tension while
the unit is running. Disconnect the unit
from the power source to prevent the
unit from starting accidentally.
WARNING:
The saw chain is
very sharp. Always wear heavy-duty
protective gloves when handling or
performing maintenance on the saw
chain.
Check the chain tension before and
during operation. Adjust the chain
tension whenever the flats on the saw
chain hang out of the bar groove.
1. Use the wrench to slightly loosen the
bar- retaining nuts. DO NOT remove
the bar-retaining nuts.
2. Hold the guide bar tip up and use a
flat-head screwdriver to turn the
chain-tensioning screw.
a) Turn the chain-tensioning screw
clockwise to tighten the saw chain.
b) Turn the chain-tensioning screw
counterclockwise to loosen the saw
chain.
The desired chain tension depends
upon the temperature of the saw chain.
c) Cold Chain Tensioning - The saw
chain should fit snuggly against the
underside of the guide bar. There
should be no sag.
d) Warm Chain Tensioning - The saw
chain will expand as it heats up during
operation. The drive links should hang
approximately 1/16 inch (1.3 mm) out
of the guide bar groove.
