Ryobi ZR51950A Manuel d'utilisateur télécharger pdf (Page 24)

Engine will not start

Engine does not reach full speed

and emits excessive smoke

Line will not advance when us-

ing automatic line lengthening

Retaining cap hard to turn when

using automatic line lengthening

Grass wraps around the trim-

mer head assembly and the

attachment shaft

Oil drips from mufer

1. Set switch to the I (ON) position.

2. Remove the spark plug. Reattach the spark

plug cap and lay the spark plug on the metal

cylinder. Pull the starter cord and watch for a

spark at the spark plug tip. If there is no spark,

repeat the test with a new spark plug.

3. Push primer bulb until the bulb is full of fuel.

If the bulb does not ll, the primary fuel deliv-

ery system is blocked. If the primer bulb lls,

the engine may be ooded. (See next item.)

4. Remove the spark plug. Turn the product so

that the spark plug hole is aimed at the ground.

Make sure the start lever is set to RUN

and pull the starter cord 10 to 14 times. This

clears excess fuel from the engine. Clean and

reinstall the spark plug. With the trigger fully

depressed, pull the starter cord 3 times. If the

engine does not start, set the start lever to

START and follow normal starting instruc-

tions. If the engine still fails to start, repeat the

procedure with a new spark plug.

5. Contact an authorized service dealer.

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

2. Clean the air lter.

3. Clean the spark arrester.

1. Lubricate with silicone spray.

2. Install more line.

3. Pull line while alternately pressing down on

and releasing the retaining cap.

4. Remove line from spool and rewind.

5. Advance line at full throttle.

Clean the threads and lubricate with grease. If this

does not solve the problem, replace the retaining cap.

1. Cut tall grass from the top down.

2. Operate the product at full throttle.

1. Operate the product at full throttle.

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

3. Clean the air lter.

1. Switch set to the O (OFF)

position.

2. No spark

3. No fuel

4. Flooded engine

5. Starter cord pulls harder now

then when new

1. Check oil fuel mixture

2. Air lter is dirty

3. Spark arrestor screen is dirty

1. Line welded to itself

2. Not enough line on the spool

3. Line worn too short

4. Line tangled on spool

5. Engine speed too slow

Screw threads are dirty or

damaged

1. Cutting tall grass at ground

level

2. Operating the product at part

throttle

1. Operating the product at part

throttle

2. Check oil/fuel mixture

3. Air lter is dirty

Problem Possible Cause Solution

Troubleshooting

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Ryobi ZR51950A Manuel d'utilisateur Page 24

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