Ryobi RY43200 Manuel de l'opérateur télécharger pdf (Page 20)

Page 20 — English

MAINTENANCE

HOW TO SHARPEN THE CUTTERS

See Figures 20 - 23.

Be careful to file all cutters to the specified angles

and to the same length, as fast cutting can be

obtained only when all cutters are uniform.

 Stop the motor and disconnect from power

supply.

Tighten the chain tension enough that the chain

does not wobble. Do all of your filing at the mid-

point of the bar. Wear gloves for protection.

Use a 5/32 in. diameter round file and holder.

Keep the file level with the top plate of the tooth.

Do not let the file dip or rock.

Using light but firm pressure, stroke towards

the front corner of the tooth. Lift file away from

the steel on each return stroke.

Put a few firm strokes on every tooth. File all left

hand cutters in one direction. Then move to the

other side and file the right hand cutters in the

opposite direction. Occasionally remove filings

from the file with a wire brush.

NOTICE:

Dull or improperly sharpened chain can cause

excessive motor speed during cutting which

may result in severe motor damage.

WARNING:

Improper chain sharpening increases the po-

tential of kickback. Failure to replace or repair

damaged chain can cause serious injury.

TOP PLATE FILING ANGLE

See Figure 24.

 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.

Fig. 22

LEFT HAND

CUTTERS

RIGHT HAND

CUTTERS

Fig. 23

Fig. 21

INCORRECT TOP PLATE

FILING ANGLE

THAN 30°

LESS

THAN 30°

Fig. 24

30°

CORRECT TOP PLATE

FILING ANGLE

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 67 68

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Ryobi RY43200 Manuel de l'opérateur Page 20

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