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MAINTENANCE
The bar rail should always be a
square. Check for wear of the bar
rail. Apply a ruler to the bar and the
outside of a cutter. If a gap is ob-
served between them, the rail is
normal. Otherwise, the bar rail is
worn. Such a bar needs to be cor-
rected or replaced.
BAR RAIL MAINTENANCE
Ruler
Gap
No
gap
Chain
tilts
SPROCKET
Sprocket
0.3 mm
Check for extensive wear, and
replace it when the teeth are
worn over 0.3 mm.
SAW CHAIN
Your cutters need to be
sharpened when:
• Sawdust becomes powder-like.
• You need extra force to saw in.
• The cut way does not go straight.
• Vibration increases.
• Fuel consumption increases
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