Spark Plug; Muffler And Spark Arrester - Hecht 8573 Originalbetriebsanleitung

filter from the inside out. Never try to brush the dirt off, brushing will force dirt into the
fibers. If the filter is excessively dirty, replace with a new filter.
6. Wash the pre-filter in liquid detergent and water. Then allow it to thoroughly air dry. Do not
oil the pre-filter.
7. Install the filter and the pre-filter back.
8. Close the cover and secure it.
NOTE: Replace filter if frayed, torn, damaged or unable to be cleaned.

SPARK PLUG

For best results, replace the spark plug every 100 hours of use. Use only the recommended spark
plug which is the correct heat range for normal engine operating temperatures. To find actual
types of recommended spark plugs please contact an authorized service center.
Warning!!! If the engine has been running, the muffler and the spark plug will be
very hot. Be carefull not to touch this parts.
NOTE: Incorrect spark plugs can cause engine damage.
For good performance, the spark plug must be properly gapped and free of deposits.
1. Disconnect the cap from the spark plug, and remove any dirt from the spark plug area.
2. Use the proper size spark plug wrench to remove the spark plug (fig. 21A).
3. Inspect the spark plug. Replace it if damaged, badly fouled, if the sealing washer is in poor
condition, or if the electrode is worn.
4. Measure the electrode gap with a suitable gauge (fig. 22A) The correct gap (fig. 22B) is listed
in the Specifications. If adjustment is needed, correct the gap by carefully bending the side
electrode.
5. Install the spark plug carefully, by hand, to avoid cross-threading.
6. After the spark plug is seated, tighten with the proper size spark plug wrench to compress
the washer.
7. When installing a new spark plug, tighten by 1/2 turn after the spark plug seats to compress
the washer.
8. When reinstalling the original spark plug, tighten by 1/8 - 1/4 turn after the spark plug seats
to compress the washer.
NOTE: A loose spark plug can become very hot and can damage the engine. Over
tightening the spark plug can damage the threads in the cylinder head.
9. Attach the spark plug cap to the spark plug.

MUFFLER AND SPARK ARRESTER

WARNING! Running engines produce heat. Engine parts, especially muffler, become
extremely hot. Severe thermal burns can occur on contact. Combustible debris,
such as leaves, grass, brush, etc. can catch fire.
• Allow muffler, engine cylinder and fins to cool before touching.
• Remove accumulated debris from muffler area and cylinder area.
• Contact the original equipment manufacturer, retailer, or dealer to obtain a spark arrester
designed for the exhaust system installed on this engine.
EN
DE
CS
SK
PL
33 / 148