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Saw chain maintenance
Properly filed cutters are shown below.
A: Top plate angle A2LM; 30°, 73LGX and 73LPX; 25°
B: Side plate angle A2LM; 80°-90°, 73LGX and 73LPX; 60°
C: Top plate cutting angle A2LM; 60°, 73LGX and 73LPX; 50°
D: Depth gauge A2LM; 0.71 mm, 73LGX and 73LPX; 0.64 mm
E: Parallel
1. Left hand cutter
2. Tie
strap
3. Right
hand
cutter
4. Depth
gauge
5. Drive
link
6. Rivet
Never operate a chain saw with a dull or damaged chain.
If the chain requires excessive pressure to cut or produces dust instead of wood chips then
inspect the cutters for damage.
When sharpening the chain the objective will be to maintain the same angles and profiles
throughout its life as when it was new.
Inspect the chain for damage or wear every time you refuel your chain saw.
WARNING
Switch off the engine before sharpening the chain.
Always wear gloves when working on chain.
CAUTION
The following faults will increase the risk of kickback considerably.
1) Top plate angle too large
2) Side plate angle too small
3) File diameter too small
4) Depth gauge too large
NOTE
These angles are referred to as Oregon 73LGX, 73LPX and Carlton A2LM saw chains.
For other branded saw chain, follow it's chain manufacturer's instruction.
