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widen, which may cause chain clatter and difficulty in making straight cuts. Insufficient
guide bar lubrication and operating the product with a chain this is too tight will contribute
to rapid bar wear. To help minimise bar wear, the guide bar maintenance is recommended.
When the guide bar is dismounted, remove any sawdust from the "GROOVE" in the guide
bar rail.
Dissemble the saw chain and guide bar in reversed order of assembly.
The circular groove of the guide bar will wear particularly on the lower edge with time.
When replacing the chain turn the chain bar 180º to allow even wear, thus extending
guide bar life.
Rotate the guide bar occasionally to prevent uneven wear. The guide bar rail should
always have a square edge.
To 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 (See Fig 21 and 22).
Assemble the guide bar and saw chain as described under "Replacing the bar and chain".
e. Sharpening the chain
WARNING! Only sharpen the saw chain yourself if you are trained and have experience!
Use proper tools to sharpen the saw chain!
It is highly recommended that, once the chain loses the ability to cut cleanly and safely, it
must be replaced. Sharpening is possible if possible if done carefully.
Have your saw chain sharpened professionally at an authorised service centre or sharpen
the chain yourself using a proper sharpening kit. Follow the sharpening instructions
supplied with a sharpening kit.
To sharpen the chain proceeds as follows:
Tighten the chain tension enough that the chain does not wobble. Do all your filing at the
midpoint of the bar. Wear gloves for protection.
Use a round file, whose diameter is 1.1 times the cutting tooth doeth. Make sure that 20%
of the file diameter is above the cutters' top plate.
A file guide is available from most reputable tool merchants and is the easiest way the
hold the file at the correct position (Fig 23).
File at an angle perpendicular to the bar and at an angle of 25º to the direction of travel
(Fig 24).
File each tooth from the inside towards outside only.
File one side of the chain first than turn the product around and repeat the process.
Sharpen each tooth equally by using the same number of strokes.
Keep all cutter lengths equal.
Check the safety depth gauge height every 5 sharpening.
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