Ryobi RY29550 User Manual download pdf (Page 18)

14 — English

PROBLEM POSSIBLE CAUSE SOLUTION

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

TROUBLESHOOTING

1. Clean or replace spark plug. Reset spark plug

gap. Refer to Spark Plug Replacement earlier

in this manual.

2. Push primer bulb until bulb is full of fuel. If bulb

does not fill, primary fuel delivery system is

blocked. Contact a service dealer. If primer

bulb fills, engine may be flooded, proceed to

next item.

3. Set the start lever to the START position. Squeeze

the trigger and pull the rope repeatedly until the

engine starts and runs.

NOTE: Depending on the severity of the flooding,

this may require numerous pulls of the rope.

1. Use fresh fuel and the correct 2-cycle lubricant

mix. (50:1).

2. Clean air filter screen. Refer to Cleaning Air

Filter Screen earlier in this manual.

3. Contact a servicing dealer.

4. Clean or replace spark plug. Reset spark plug

gap. Refer to Spark Plug Replacement earlier

in this manual.

1. Turn idle speed screw clockwise to increase idle

speed. See Figure 24.

1. Lubricate string with silicone spray.

2. Install more string. Refer to the applicable string

replacement section in this manual.

3. Pull strings while alternately pressing down on

and releasing spool retainer.

4. Remove string from spool and rewind. Refer to

the applicable string replacement section in this

manual.

5. Advance string at full throttle.

Engine will not start

Engine does not reach full

speed and emits excessive

smoke

Engine starts, runs, and ac-

celerates but will not idle

String will not advance

1. No spark.

2. No fuel.

3. Engine is flooded.

1. Incorrect lubricant/fuel mixture.

2. Air filter screen is dirty.

3. Spark arrestor screen is dirty.

4. Spark plug fouled.

1. Idle speed screw on carburetor

needs adjustment.

1. String is welded to itself.

2. Not enough string on spool.

3. String is worn too short.

4. String is tangled on spool.

5. Engine speed is too slow.

1. Clean threads and lubricate with grease - if no

improvement, replace the spool retainer.

1. Cut tall grass from the top down to prevent

wrapping.

2. Operate trimmer at full throttle.

Spool retainer hard to turn

G r a s s w r a p s a r o u n d

driveshaft housing and

string head

1. Screw threads are dirty or

damaged.

1. Cutting tall grass at ground

level.

2. Operating trimmer at part

throttle.

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Ryobi RY29550 User Manual Page 18

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