Troubleshooting - Ryobi RY39506 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.

TROUBLESHOOTING

POSSIBLE 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 lubricant fuel mix-
ture.
Air filter screen is dirty.
Spark arrestor screen is
dirty.
I d l e s p e e d s c re w o n
carburetor needs adjust-
ment
REMEDY
Clean or replace spark plug. Reset spark plug gap. Refer to Spark
Plug Replacement earlier in this manual.
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 rope 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 lubricant mix.
Clean air filter screen. Refer to Cleaning The Air Filter Screen
earlier in this manual.
Contact a servicing dealer.
Turn idle speed screw clockwise to increase idle speed. See fig-
ure 11. The blades should not move at idle.
13 - English