Ryobi RY10518 Operator's Manual - Page 38

Troubleshooting, Bar And Chain Combinations

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BAR AND CHAIN COMBINATIONS Chain specifications: 0.0325 pitch, .05 in. chain gauge Length of Bar Guide Bar Part Number 20 in. 310629001 18 in. 310628001 Chain Part Number 900920027 901430001 Drive Links 78 link 72 link TROUBLESHOOTING Problem Possible Cause Solution Engine will not start. [Make sure ignition switch is in the RUN ( l ) position.] No spark. Engine is flooded. 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 will not run proper- "H" (High Jet) ly at high speed. adjustment. Clean or replace spark plug. Reset spark plug gap. Refer to Spark Plug Replacement earlier in this manual. With the ignition 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 ignition switch to RUN ( l ) 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 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. Engine does not reach full speed and/or emits excessive smoke. Lubricant/fuel mixture incorrect. Air filter is dirty. Spark arrestor screen is dirty. Carburetor requires "H" (High Jet) 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/Cleaning the Spark Arrestor Screen in the Maintenance section of this manual. Contact an authorized service center for carburetor adjustment. Page 38 - English

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Page 38 — English
Problem
Possible Cause
Solution
Engine will not
start. [Make sure
ignition switch is in
the
RUN
(
l
)
posi-
tion.]
No spark.
Engine is flooded.
Clean or replace spark plug. Reset spark plug gap. Refer
to
Spark Plug Replacement
earlier in this manual.
With the ignition 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 igni-
tion switch to
RUN (
l
)
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
FULL 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)
adjustment.
Contact an authorized service center for carburetor
adjustment.
Engine starts, then
dies.
Carburetor requires
“L”
(Low Jet)
adjustment.
Contact an authorized service center for carburetor
adjustment.
Engine starts but
will not run proper-
ly at high speed.
Carburetor requires
“H”
(High Jet)
adjustment.
Contact an authorized service center for carburetor
adjustment.
Engine does not
reach full speed
and/or emits ex-
cessive smoke.
Lubricant/fuel
mixture incorrect.
Air filter is dirty.
Spark arrestor
screen is dirty.
Carburetor requires
“H”
(High Jet)
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.
Chain specifications:
0.0325 pitch, .05 in. chain gauge
Length of Bar
Guide Bar Part Number
Chain Part Number
Drive Links
20 in.
310629001
900920027
78 link
18 in.
310628001
901430001
72 link
TROUBLESHOOTING
BAR AND CHAIN COMBINATIONS