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5. 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. 30).
6. Turn the guide bar 180° to allow even wear, thereby extending the life span of the
guide bar.
7. 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).
8. Refit the saw chain and guide bar as described under chapter "Assembly".
Saw chain sharpening
Note: Saw chain sharpening may be required:
- after damp wood is cut (there will be mealy sawdust),
- when handling the product becomes difficult (pulls to the left or right),
- when the saw chain is blunt (excessive force is required to penetrate the
wood), or obviously damaged.
Never saw with a blunt chain. The saw chain is blunt if you have to push the product
into the tree and the chips are very small.
WARNING: Only sharpen the saw chain yourself if you are trained and
have experience! Use proper tools to sharpen the saw chain!
Fig. 29
33
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