Product Manual

Saw chain maintenance

 Properly filed cutters are shown below.

A: Top plate angle N1C-BL; 35°, 91VG, 91VX and 90SG; 30°

B: Side plate angle N1C-BL; 85°-90°, 91VG and 90SG; 80°, 91VX; 70°

C: Top plate cutting angle N1C-BL and 91VG; 60°, 91VX and 90SG; 50°

D: Depth gauge N1C-BL; 0.56 mm, 90SG; 0.51 mm, 91VG and 91VX; 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 91VG, 91VX, 90SG and Carlton N1C-BL saw

chains.

For other branded saw chain, follow it's chain manufacturer's instruction.