Ryobi PCN 4040, Owner'S Operation Manual

TROUBLESHOOTING

PROBLEM

POSSIBLE CAUSE

SOLUTION

Engine will not start. 

1. No spark.

1. Check spark. Remove air filter cover.

(Make sure ignition switch 

Remove sparking plug from cylinder.

is in start position “I”).

Reattach the sparking plug wire and lay

sparking plug on top of cylinder with the

metal part of plug touching the cylinder. 

Pull the starter rope and watch for spark 

at sparking plug tip. 

If there is no spark, repeat test with a new

sparking plug.

2. Flooded engine.

2. With the ignition switch off, remove

sparking plug. Move choke lever to run

position (pushed in completely) and pull

starter cord 15 to 20 times. This will clear

excess fuel from engine. Clean and

reinstall sparking plug. 

Set ignition switch to run (I) position. 

Push and fully release primer bulb 

7 times. Pull starter three times with choke

lever at run. If engine does not start, move

choke lever to choke and repeat normal

starting procedure. 

If engine still fails to start, repeat procedure

with a new sparking plug.

Engine starts but will not 

Carburettor requires “

L

” 

Contact a Ryobi service dealer for

accelerate properly.

(Low jet) adjustment.

carburettor adjustment.

Engine starts but will not run 

Carburettor requires “

H

” 

Contact a Ryobi service dealer for 

properly at high speed.

(High jet) adjustment.

carburettor adjustment.

Engine does not reach full speed  1. Check oil fuel mixture.

1. Use fresh fuel and the correct 2-cycle

and/or emits excessive smoke.

oil mix ratio.

2. Air filter dirty.

2. Clean air filter. Refer to “Maintenance –

Cleaning the Air Filter” earlier in this 

manual.

3. Spark arrester screen dirty.

3. Clean spark arrester screen. Refer to 

“Maintenance – Cleaning the Spark

Arresting Silencer” earlier in this manual.

4. Carburettor requires “

H

” 

4. Contact a Ryobi service dealer for 

(High jet) adjustment.

carburettor adjustment.

Engine starts, runs, and 

Carburettor requires adjustment.

Turn idling speed screw “

T

” clockwise to

accelerates but will not idle.

increase idling speed. If chain turns at 

idle, turn idling speed screw “

T

” anticlockwise 

to decrease speed. Wear protective 

equipment and observe all safety instructions 

(Fig. 24).

15

English

PCN 4040_4545 manual