TOP Plate Filing Angle, Side Plate Angle

MAINTENANCE

WARNING:

Improper chain sharpening increases the potential of kickback.

WARNING:

Failure to replace or repair damaged chain can cause serious injury.

CORRECT TOP PLATE

FILING ANGLE

30°

INCORRECT TOP PLATE FILING

ANGLE

LESS	MORE
THAN 30°	THAN 30°

Fig. 36

WARNING:

The saw chain is very sharp, always wear protective gloves when performing maintenance to the chain.

TOP PLATE FILING ANGLE

See Figure 36.

nCORRECT 30° - File holders are marked with guide marks to align file properly to produce correct top plate angle.

nLESS THAN 30° - For Cross Cutting.

nMORE THAN 30° - Feathered Edge Dulls Quickly.

SIDE PLATE ANGLE

See Figure 37.

nCORRECT - 80o Produced automatically if correct diam- eter file is used in file holder.

nHOOK - “Grabs” and dulls quickly. Increases potential of KICKBACK.

Results from using a file with diameter too small, or file held too low.

nBACKWARD SLOPE - Needs too much feed pressure, causes excessive wear to bar and chain.

Results from using a file with diameter too large, or file held too high.

DEPTH GAUGE CLEARANCE

See Figure 38.

nThe depth gauge should be maintained at a clearance of

.025 in. (0.6 mm). Use a depth gauge tool for checking the depth gauge clearances.

nEvery time the chain is filed, check the depth gauge clear- ance.

CORRECT SIDE	INCORRECT SIDE PLATE
PLATE FILING	FILING ANGLE
ANGLE
	HOOK	BACKWARD
		SLOPE
80°

Fig. 37

RAKER CLEARANCE

.025 in. (0.6 mm)

Fig. 38

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