26
13. SHARPENING THE SAW CHAIN
CAUTION: Before doing any work on the
guide bar or chain, always switch off
the engine and pull the plug cap off the spark
plug (
see “Replacing the spark plug”
). Always wear
protective gloves!
The chain needs sharpening when:
The sawdust produced when sawing damp wood looks
like wood flour.
The chain penetrates the wood only under great
pressure.
The cutting edge is visibly damaged.
The saw is pulled to the left or right when sawing. This
is caused
by uneven sharpening of the chain.
Important: Sharpen frequently, but without
removing too much metal!
Cutter setting standards:
Before filing:
Make sure the saw chain in held securely.
Make sure the engine is stooped.
Use a round file of proper size for your chain.
Chain type: 21 VB
File size: 3/16(4.5mm)
Place your file on the cutter and push straight forward.
Keep the file position as illustrated.
Place your file on the cutter and push. Straight forward.
Keep the file position as illustrated. (Fig. AA3& AA4)
After each cutter has been filed, check the depth gauge
and fil e it to the proper level as illustrated.
WARNING:
Be sure to round off the front edge
to reduce the chance of kickback or tie-strap
breakage.
Correct even the smallest excess height with a special
flat file (1).
Round off the front of the depth limiter (2).
Depth gauge standard (3)
Fig.AA3
Fig.AA4
Summary of Contents for GM45CS3
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