User Manual

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CLEANING AND MAINTENANCE
Guide Bar and Saw Chain Maintenance
Most guide bar problems can be prevented merely by keeping the product well maintained.
Incorrect filling and non-standard cutter and depth gauges settings are the causes of most
guide bar problems, primarily resulting in uneven bar wear. As the bar wears unevenly, the
rails widen, which may cause the chain to clatter and make it difficult to complete straight
cuts. If the guide bar is insufficiently lubricated and the product is operated with a saw chain
which is too tight, this will contribute to rapid bar wear. To help minimize bar wear,
maintenance of the guide bar as well as the saw chain is recommended.
Disassemble the guide bar and saw chain in reversed order from assembly.
Check the oiling port (22) for clogging and clean if necessary to ensure proper lubrication of
the guide bar and saw chain during operation. Use a soft wire small enough to insert into the
oil discharge hole.
NOTE: The condition of the oil passages can be easily checked. If the passages are clear, the
chain will automatically give off a spray of oil within seconds of the product starting. Your
product is equipped with an automatic oiling system.
Check the drive sprocket (20). If it is worm or damaged due to strain, have it replaced by an
authorized service agent.
Clear residue from the rails on the guide bar (5) using a screwdriver, putty knife, wire brush or
other similar tool. This will keep the oil passages open to provide proper lubrication to the bar
(5) and chain(4) (Fig. 38).
Check the guide bar “rail” for wear: Hold a ruler (straight edge” against the side of the guide
bar and “cutter side plates”. If there is a gap between the ruler and guide bar the guide bar
“rail” is normal. If there is no gap (ruler flush against the side of the guide bar) the guide bar
“rail) is worn and needs to be replaced with a new one of the same type (Fig. 39).
Turn the guide bar 180eto allow even wear, thereby extending the life span of the guide
bar(5).
Check the saw chain for possible wear and damages. Replace it with a new one if required.
Experienced users can sharpen a dull saw chain (see section “Saw chain sharpening”
below).
Refit the saw chain (4) and the guide bar (5) as described under “Assembly”.