hecht 8616 - Oil Change

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For good performance, the spark plug must be properly gapped and free of deposits.
1. Shut off the engine before performing any service on the machine. Wait till all moving parts
are completely stopped.
2. Disconnect the cap (fig. 35A) from the spark plug, and remove any dirt from the spark plug
area.
3. Use the proper size spark plug wrench to remove the spark plug (fig. 35B).
4. Inspect the spark plug. Replace it if damaged, badly fouled, if the sealing washer is in poor
condition, or if the electrode is worn.
5. Measure the electrode gap (fig. 36A) with a suitable gauge. The correct gap is listed in
the Specifications. If adjustment is needed, correct the gap by carefully bending the side
electrode.
6. Install the spark plug carefully, by hand, to avoid cross-threading.
7. After the spark plug is seated, tighten with the proper size spark plug wrench to compress
the washer.
8. When installing a new spark plug, tighten by 1/2 turn after the spark plug seats to compress
the washer.
9. When reinstalling the original spark plug, tighten by 1/8 - 1/4 turn after the spark plug seats
to compress the washer.
CAUTION! A
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.
10. Attach the spark plug cap to the spark plug.
OIL CHANGE
It is recommended to ask authorized service for oil change.
Drain the engine oil when the engine is warm. Warm oil drains quickly and complete. Attention:
Do not drain oil when the engine is running!
When you drain the oil from the top oil fill tube, the fuel tank must be empty or fuel can leak
out and result in a fire or explosion.
1. Shut off the engine before performing any service on the machine. Wait till all moving parts
are completely stopped and disconnect the spark plug.
2. Place a suitable container next to the engine to catch the used oil.
3. Remove the oil filler cap/dipstick (fig. 37A).
4. Remove the drain bolt (fig. 37B) and allow the used oil to drain completely into the container.
5. For engine without drain plug, we recommend to use oil extractor pump, or drain the oil
into the container by slightly tilting the engine toward the oil filler cap/dipstick. Before tilting
the machine, remove fuel from tank. Keep the spark plug end of the engine up.
Note: I
Please dispose of used motor oil in a manner that is compatible with the environment.
We suggest you take used oil in a sealed container to your local recycling center or service
station for reclamation. Do not throw it in the trash or pour it on the ground or down
a drain.