Troubleshooting - Ryobi RY52004 Operator's Manual

PROBLEM
Engine will not start.
Engine starts but will
not accelerate.
Engine starts but will
only run at high speed
at half choke.
Engine does not reach
full speed and emits
excessive smoke.
Engine starts, runs,
and accelerates but
will not idle.
Bar and chain running
hot and smoking.
Motor runs, but chain
is not rotating.

TROUBLESHOOTING

CAUSE
No spark.
No fuel.
Engine is flooded.
Starter rope pulls harder
now than when new.
Engine requires approxi-
mately three minutes to
warm up.
Carburetor requires
adjustment.
Check oil fuel mixture.
Air filter is dirty.
Spark arrestor screen is
dirty.
Idle speed screw on
carburetor
Check chain tension for
overtight condition
Chain oil tank empty
Chain tension too tight.
Check guide bar and chain
assembly.
Check guide bar and chain
for damage.
REMEDY
Check spark. Remove spark plug. Reattach the spark plug cap and
lay spark plug on metal cylinder. Pull the starter rope and watch
for spark at spark plug tip. If there is no spark, repeat test with a
new spark plug.
Push primer bulb until bulb is full of fuel. If bulb does not fill, primary
fuel delivery system is blocked. Contact a servicing dealer. If primer
bulb fills, engine may be flooded, proceed to next item.
Pull starter three times with choke lever at "RUN". If engine does
not start, move choke lever to "START" and repeat normal starting
procedure. If engine still fails to start, repeat procedure with a new
spark plug.
Contact a servicing dealer.
Allow engine to completely warm up. If engine does not accelerate
after three minutes, contact a servicing dealer.
Contact a servicing dealer.
Use fresh fuel and the correct 2-cycle oil mix.
Clean air filter. Refer to "Replacing and Cleaning Air Filter" earlier
in this manual.
Contact a servicing dealer.
Turn idle speed screw clockwise to increase idle speed.
Tension chain. Refer to "Chain Tension" earlier in this manual.
Check oil tank.
Retension chain. Refer to "Chain Tension" earlier in this manual.
Refer to "Replacing the Bar and Chain" earlier in this manual.
Inspect guide bar and chain for damage.
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