Troubleshooting - Ryobi PCN 4040 Owner's Operation Manual

TROUBLESHOOTING

PROBLEM
Engine will not start.
(Make sure ignition switch
is in start position "I").
Engine starts but will not
accelerate properly.
Engine starts but will not run
properly at high speed.
Engine does not reach full speed
and/or emits excessive smoke.
Engine starts, runs, and
accelerates but will not idle.
English
POSSIBLE CAUSE
1. No spark.
2. Flooded engine.
Carburettor requires "L"
(Low jet) adjustment.
Carburettor requires "H"
(High jet) adjustment.
1. Check oil fuel mixture.
2. Air filter dirty.
3. Spark arrester screen dirty.
4. Carburettor requires "H"
(High jet) adjustment.
Carburettor requires adjustment.
15
SOLUTION
1. Check spark. Remove air filter cover.
Remove sparking plug from cylinder.
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. 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.
Contact a Ryobi service dealer for
carburettor adjustment.
Contact a Ryobi service dealer for
carburettor adjustment.
1. Use fresh fuel and the correct 2-cycle
oil mix ratio.
2. Clean air filter. Refer to "Maintenance –
Cleaning the Air Filter" earlier in this
manual.
3. Clean spark arrester screen. Refer to
"Maintenance – Cleaning the Spark
Arresting Silencer" earlier in this manual.
4. Contact a Ryobi service dealer for
carburettor adjustment.
Turn idling speed screw "T" clockwise to
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).