Ryobi RY10521B Manuel D'utilisation page 37

Problem
Engine will not No spark.
start. [Make sure
on/stop switch is
Engine is flooded.
in the RUN ( l ) po-
sition.]
Engine starts but Carburetor requires
will not accelerate "L" (Low Jet)
properly. adjustment.
Engine starts, then Carburetor requires
dies. "L" (Low Jet)
adjustment.
Engine starts but Carburetor requires
"H" (High Jet)
will not run prop-
erly at high speed. adjustment.
Engine does not Lubricant/fuel
reach full speed mixture incorrect.
and/or emits ex-
Air filter is dirty.
cessive smoke.
Spark arrestor
screen is dirty.
Carburetor requires
"H" (High Jet)
adjustment.
E n g i n e s t a r t s , Carburetor requires
runs, and acceler- adjustment to idle
ates but will not speed.
idle.
Carburetor requires
Chain turns at idle. adjustment to idle
speed.
Air leak in the intake
system.
TROUBLESHOOTING
Possible Cause
Page 37 — English
Clean or replace spark plug. Reset spark plug gap. Refer
to Spark Plug Replacement earlier in this manual.
With the on/stop switch OFF, remove spark 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 spark plug. Set on/
stop switch to RUN ( l ) position. Push and fully release
primer bulb 7 times. Pull starter grip and rope three times
with choke lever at RUN. If engine does not start, move
choke lever to FULL CHOKE and repeat normal starting
procedure. If engine still fails to start, repeat procedure
with a new spark plug.
Contact an authorized service center for carburetor
adjustment.
Contact an authorized service center for carburetor
adjustment.
Contact an authorized service center for carburetor
adjustment.
Use fresh fuel and the correct 2-cycle lubricant mix
ratio.
Clean air filter. Refer to Cleaning the Air Filter in the
Maintenance section of this manual.
Clean spark arrestor screen. Refer to Inspecting/Clean-
ing the Spark Arrestor Screen in the Maintenance sec-
tion of this manual.
Contact an authorized service center for carburetor
adjustment.
Turn idle speed screw "T" clockwise to increase idle
speed. Refer to Adjusting the Carburetor in the
Maintenance section of this manual.
Turn idle speed screw "T" counterclockwise to de-
crease speed. Refer to Adjusting the Carburetor in
the Maintenance section of this manual.
Contact an authorized service center for a rebuild kit.
Solution