To ensure proper engine operation, the spark plugs must be properly gapped and
free of deposits.
1. Remove the spark plug caps and use a spark plug wrench (1) to remove each
spark plug.
If the engine has been running, the muffler will be very hot.
Be careful not to touch the muffler.
2. Visually inspect the spark plugs. Discard the spark plug if there is apparent
wear, or if the insulator is cracked or chipped. Clean the spark plugs witha wire
brush if they are to be reused.
3. Measure the plug gap (2) with a feeler gauge. Correct as necessary by bend-
ing the side electrode. The gap should be: 0.70 0.80 mm (0.028 0.031 in)
4. Check that the spark plug washer is in good condition and thread the spark
plug in by hand to prevent cross-threading.
5. After the spark plug is seated, tighten with a spark plug wrench (1) to com-
press the washer.
When installing a new spark plug, tighten 1/2 turn after the
NOTE
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!
WARNING!
EN 56 MAINTENANCE
