All Power APG3560CN User Manual
Page 25
1. Remove the spark plug cap.
2. Use a spark plug wrench to remove the spark plug.
3. Visually inspect the spark plug. Discard it if the insulator is cracked or chipped. Clean the spark
plug with a wire brush if it is to be reused.
4. Measure the plug gap with a feeler gauge.
5. Check that the spark plug washer is in good condition.
6. After the spark plug is seated, tighten with a spark plug in by hand to prevent cross-threading.
7, After the spark plug is seated, tighten with a spark plug wrench to compress the washer.
NOTE: THE SPARK PLUG MUST BE SECURELY TIGHTENED. AN IMPROPERLY
TIGHTENED SPARK PLUG CAN BECOME VERY HOT AND COULD DAMAGE THE
ENGINE. NEVER USE SPARK PLUGS WHICH HAVE AN IMPROPER HEAT RANGE.
USE ONLY RECOMMENDED SPARK PLUGS OR EQUIVALENT.