Global Machinery Company PCH37 instruction manual Chain sharpening, Guide bar wear

Chain sharpening

Sharpen the chain regularly to maintain optimum performance of the saw. Signs of a dull chain are:

•The sawdust becomes powder-like

•Extra force is required to execute a cut

•The cut does not track in a straight line

•Increased vibration

•Increased fuel consumption

WARNING. Wear heavy

gloves when handling the chain. Hold the guide bar (1) securely in a vice.

Sharpen each cutter using the chain file (30). Always use outward strokes.

After sharpening, the cutters must all have the same width

and length. After every 3-4 times use an authourised repair centre to professionally sharpen your saw chain. They have the special tools necessary to ensure the correct cutting angles and depths.

Guide bar wear

Reverse the guide bar every 8 working hours to ensure uniform wear. Check the bar rails frequently and if necessary remove burs and square-up the rails using a flat file.

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