Ryobi RY3716 Operation Manual - Page 40

Troubleshooting

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TROUBLESHOOTING Problem Possible Cause Solution Engine will not start. [Make sure on/stop switch is in the RUN ( l ) ­position.] No spark. Check spark. Remove air filter cover. Remove spark plug from cylinder. Reattach the spark plug wire and lay spark plug on top of cylinder with the metal part of plug touching the cylinder. Pull the starter grip and watch for spark at spark plug tip. If there is no spark, repeat test with a new spark plug. Engine is flooded. With the on/stop switch in the OFF position, remove spark plug. Move choke knob to RUN position (pushed in completely) and pull starter grip 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 three times with choke knob at RUN. If engine does not start, move choke knob to HALF CHOKE and repeat normal starting procedure. If engine still fails to start, repeat procedure with a new spark plug. Engine starts but Carburetor requires Contact a qualified service center for carburetor adjust- will not accelerate "L" (Low Jet) adjust- ment. properly. ment. Engine starts, then Carburetor requires Contact a qualified service center for carburetor adjust- dies. "L" (Low Jet) adjust- ment. ment. Engine starts but Carburetor requires Contact a qualified service center for carburetor adjustwill not run prop- "H" (High Jet) adjust- ment. erly at high speed. ment. Engine does not reach full speed and/or emits excessive smoke. Lubricant/fuel mixture incorrect. Air filter is dirty. 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. Carburetor requires Contact a qualified service center for carburetor adjust"H" (High Jet) adjust- ment. ment. Engine starts, runs, Carburetor requires Turn idle speed screw "T" clockwise to increase idle and accelerates ­adjustment to idle speed. Refer to Adjusting the Carburetor in the but will not idle. speed. Maintenance section of this manual. Page 40 - English

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Page 40 — English
Problem
Possible Cause
Solution
Engine will not
start. [Make sure
on/stop switch
is in the
RUN
(
l
)
position.]
No spark.
Engine is flooded.
Check spark. Remove air filter cover. Remove spark
plug from cylinder. Reattach the spark plug wire and lay
spark plug on top of cylinder with the metal part of plug
touching the cylinder. Pull the starter grip and watch for
spark at spark plug tip. If there is no spark, repeat test
with a new spark plug.
With the on/stop switch in the OFF
position, remove
spark plug. Move choke knob to RUN position (pushed in
completely) and pull starter grip 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 three times
with choke knob at RUN. If engine does not start, move
choke knob to HALF CHOKE and repeat normal starting
procedure. If engine still fails to start, repeat procedure
with a new spark plug.
Engine starts but
will not accelerate
properly.
Carburetor requires
“L”
(Low Jet) adjust-
ment.
Contact a qualified service center for carburetor adjust-
ment.
Engine starts, then
dies.
Carburetor requires
“L”
(Low Jet) adjust-
ment.
Contact a qualified service center for carburetor adjust-
ment.
Engine starts but
will not run prop-
erly at high speed.
Carburetor requires
“H”
(High Jet) adjust-
ment.
Contact a qualified service center for carburetor adjust-
ment.
Engine does not
reach full speed
and/or emits ex-
cessive smoke.
Lubricant/fuel mixture
incorrect.
Air filter is dirty.
Carburetor requires
“H”
(High Jet) adjust-
ment.
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.
Contact a qualified service center for carburetor adjust-
ment.
Engine starts, runs,
and accelerates
but will not idle.
Carburetor requires
adjustment to idle
speed.
Turn idle speed screw
“T”
clockwise to increase idle
speed. Refer to
Adjusting the Carburetor
in the
Maintenance
section of this manual.
TROUBLESHOOTING