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21 Troubleshooting Guide
21 Troubleshooting Guide
21.1 Blower
Many performance issues can be resolved with a few simple steps. When troubleshooting, STIHL recommends that you start
with the following measures:
► Replace the air filter, @ 21.4.
► Clean or replace the spark plug, @ 19.3
► Clean or replace the spark arresting screen, @ 19.3.
► As appropriate for conditions, set the blower's "shutter" for winter or summer operation, @ 15.1 or @ 15.2.
► Adjust the blower's idle speed, @ 21.2.
► If these measures do not resolve the issue, continue to the steps described below.
Always shut off the engine before carrying out any inspection, cleaning or maintenance.
Condition
The engine does not start. There is insufficient fuel in the fuel tank.
The engine idles
erratically.
The engine stops while
idling.
The engine does not reach
maximum speed.
21.2 Adjusting the Carburetor
If you use the blower at high altitude, a slight adjustment of
the carburetor setting may be necessary.
► Start the engine, @ 11.
► Warm up the engine by opening and closing the throttle for
about 1 minute.
0458-459-8221-C
Possible Cause
The carburetor is too hot.
The carburetor is iced up.
The carburetor is iced up.
The carburetor is iced up.
The throttle cable is not set correctly.
Remedy
► Refuel the blower, @ 10.2.
► Cool down the blower.
► Before starting the engine. Press the manual
fuel pump bulb at least ten times – even if the
bulb is filled with fuel.
► Allow the engine to warm up gradually to a
temperature of about 50 °F (10 °C).
► Allow the engine to warm up gradually to a
temperature of about 50 °F (10 °C).
► Allow the engine to warm up gradually to a
temperature of about 50 °F (10 °C).
► Adjusting the throttle cable, @ 21.3.
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