Garland FUM 250G-V19 Manuel D'instructions page 32

English
If the inside of the fuel tank is dirty you can clean it
with petrol.
8.1.3. CHECKING THE SPARK PLUG
When it comes to starting a machine, the most
common problems are produced by a dirty spark plug
or one in poor condition. Clean and check the spark
plug regularly. Check that the electrode gap is correct
(0.6 - 0.7 mm).
8.1.4. CLEANING THE CYLINDER FINS
The cylinder fins are responsible for the cooling of the
engine due to its contact with the air. These fins must
be clean and without any material including those
that limit the flow of air. A few dirty fins will make the
engine to overheat and can be dangerous. Check the
condition of the cylinder fins regularly.
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