IMPORTANT: use only fresh, clean gasoline for fueling.
3.3.2 Before each use or periodically
Check the condition of the air filter - clean or replace if dirty (more
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under "Cleaning and Maintenance").
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Check the fastening of the screws in the housing and tighten them
sensitively if necessary.
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Check the condition and level of the engine oil - add oil if necessary
or replace with fresh oil.
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After 25 operating hours, inspect and clean the engine ribs.
After 50 hours check the condition of the spark plug and its
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electrode gap - clean and adjust if necessary (for electrode gap see
technical data table). Also change the engine oil after 50 hours or
annually, depending on the interval before.
After 100 hours, dismantle and clean the fuel tank and the filter
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on the filler neck. Using e.g. extraction gasoline for rinsing is
recommended. The tank should be completely empty before
reassembly.
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Every 2 years, check the condition of the fuel hoses for wear,
damage or leakage and the clamps on the hoses for tightness.
3.3.3 STARTING THE ENGINE: