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Guide bar and saw chain maintenance
Most guide bar problems can be prevented merely by keeping the product well
maintained. Incorrect filing and non-standard cutter and depth gauge 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 minimise bar wear, maintenance of the guide bar as well as the saw
chain, is recommended.
1. Disassemble the guide bar and saw chain in reverse order from assembly.
2. Check the oiling port 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 (Fig. 27).
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.
3. Check the drive sprocket. If it is worn or damaged due to strain, have it replaced
by an authorised service centre or a similarly qualified person.
4. Clear residue from the rails on the guide bar using a screwdriver, putty knife, wire
brush or other similar tool. This will keep the oil passages open to provide proper
lubrication to the guide bar and saw chain (Fig. 28).
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Fig. 27
Fig. 28
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