Ryobi P542 Manuel d'utilisateur télécharger pdf (Page 23)

23 - English

WARNING:

Improper chain sharpening increases the poten-

tial of kickback.

WARNING:

Failure to replace or repair damaged chain can

cause serious injury.

WARNING:

The saw chain is very sharp, always wear pro-

tective gloves when performing maintenance

to the chain.

TOP PLATE FILING ANGLE

See Figure 34.

 CORRECT 30° - File holders are marked with

guide marks to align file properly to produce

correct top plate angle.

 LESS THAN 30° - For Cross Cutting.

 MORE THAN 30° - Feathered Edge Dulls Quickly.

SIDE PLATE ANGLE

See Figure 35.

 CORRECT - 80° Produced automatically if cor-

rect diameter file is used in file holder.

 HOOK - “Grabs” and dulls quickly. Increases

potential of KICKBACK.

Results from using a file with diameter too small,

or file held too low.

 BACKWARD 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 36 - 38.

 The depth gauge should be maintained at a

clearance of .025 in. Use a depth gauge tool

for checking the depth gauge clearances.

 Every time the chain is filed, check the depth

gauge clearance.

MAINTENANCE

INCORRECT TOP PLATE FILING

ANGLE

THAN 30°

LESS

THAN 30°

Fig. 34

30°

CORRECT TOP PLATE

FILING ANGLE

INCORRECT SIDE PLATE

FILING ANGLE

BACKwARD

SLOPE

HOOK

Fig. 35

80°

CORRECT SIDE

PLATE FILING

ANGLE

RAKER CLEARANCE

.025 in.

Fig. 36

Use a flat file and a depth gauge jointer to lower

all gauges uniformly. Depth gauge jointers are

available in .020 in. to .035 in. Use a .025 in. depth

gauge jointer. After lowering each depth gauge,

restore original shape by rounding the front. Be

careful not to damage adjoining drive links with

the edge of the file.

Depth gauges must be adjusted with the flat file in

the same direction the adjoining cutter was filed

with the round file. Use care not to contact cutter

face with flat file when adjusting depth gauges.

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Ryobi P542 Manuel d'utilisateur Page 23

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