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FILING SAW CHAIN
Level 3.
Tools required: 4 mm (5/32 in.) Round File, Flat File, Depth Gauge
IMPORTANT
Dull or damaged cutters will result in poor cutting performance,
increased vibration, and premature saw chain failure.
WARNING
Always stop engine and disconnect spark plug wire before
servicing guide bar and saw chain. Always wear gloves when filing
saw chain, otherwise serious personal injury may result.
1.
Set round file (A) in cutter at 30° angle. One fifth (1/5) of the file
should be exposed above top cutter edge.
2.
Keep file horizontal in cutter and file in one direction.
3.
File until cutter top and side bevel edges are sharp without nicks.
4.
Place depth gauge tool (B) firmly on top of cutter with .025 in. slot
and end against front cutter raker. File cutter raker with flat file until
flush with top of depth gauge.
5.
Finish cutter sharpening by rounding front raker edge (C) with flat
file.
6.
Properly filed cutter is as shown.
7.
Apply clean oil and rotate saw chain slowly to wash away filings.
8.
If saw chain is coated or clogged with resin, clean in kerosene, then
soak in oil.
P
P
OWER
O
'
PERATOR
S
1
2
3
4
5
6
(TOP PLATE ANGLE)
(TOP PLATE CUTTING ANGLE)
(DEPTH GAUGE)
TM
RUNER
27
M
ANUAL
30°
90°
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