ETQ DG4LE Owner's Manual page 35

Improper maintenance:
The life of an engine or your equipment depends upon the conditions under which it operates, and the care it receives.
Some applications, such as tillers, pumps, and rotary movers, are very often used in dusty or dirty conditions, which
can cause what appears to be premature, wear. Such wear, when caused by dirt, dust, spark pug cleaning grit, or other
abrasive material that has entered the engine because of improper maintenance is is not covered by warranty.
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