Ryobi RY70105A Manuel de l'opérateur télécharger pdf (Page 21)

NOTE: The carburettor adjustment needle(s) are equipped

with plastic cap(s) which prevent anticlockwise rotation from

the original factory adjustment. If your unit exhibits specific

performance problem(s) where the Troubleshooting Section

recommends an anticlockwise needle adjustment and no

adjustments have been made since original purchase, the

unit should be taken to a factory-authorised service dealer

for repair. In most cases, the needed adjustment is a simple

task for the factory-trained service representative.

“L” LO

NEEDLE

“H” HIGH

NEEDLE

IDLE SPEED

SCREW

Fig. 27

TROUBLESHOOTING

1. Lubricate with silicone spray.

2. Install more string. Refer to “String Replacement”

earlier in this manual.

3. Pull strings while alternately pressing down on and

releasing spool retainer.

4. Remove string from spool and rewind. Refer to “String

Replacement” earlier in this manual.

5. Advance string at full throttle.

1. Cut tall grass from the top down.

2. Operate trimmer at full throttle.

Clean threads and lubricate with grease - if no improve-

ment, replace spool retainer.

1. Operate trimmer at full throttle.

2. Use fresh fuel and the correct 2-cycle oil mix.

3. Clean per instruction in Maintenance Section.

4. Turn “H” needle clockwise 1/16 - 1/8 turn.

See Figure 27.

1. String welded to itself.

2. Not enough string on spool.

3. String worn too short.

4. String tangled on spool.

5. Engine speed too slow.

1. Cutting tall grass at ground

level.

2. Operating trimmer at part

throttle.

Screw threads dirty or

damaged.

1. Operating trimmer at part

throttle.

2. Check oil/fuel mixture.

3. Air filter dirty.

4. Carburettor requires adjust-

ment.

String will not advance:

Grass wraps round shaft

housing and string

head:

Spool retainer hard

to turn:

Oil drips from silencer:

PROBLEM POSSIBLE CAUSE SOLUTION

IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM, CONTACT YOUR AUTHORISED SERVICE DEALER.

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Ryobi RY70105A Manuel de l'opérateur Page 21

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