Honda XRE 190 Owner's Manual page 126

XRE 190
5. Check the spark plug gap using a wiretype feeler
gauge.
If adjustment is necessary, bend the side elec-
trode carefully.
the gap should be:
0.80 - 0.90 mm (0.031 - 0.035 in)
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6. Make sure the plug washer is in good condition.
7. Install the spark plug. With the plug washer
attached, thread the spark plug in by hand to
prevent cross-threading.
1. Spark plug gap
2. Side electrode
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8. Tighten the spark plug:
If the old plug is good:
1/8 turn after it seats.
If installing a new plug, tighten it twice to prevent
loosening:
a) First, tighten the plug:
1/2 turn after it seats.
b) Then loosen the plug.
c) Next, tighten the plug again:
1/8 turn after it seats.
n
otice
An improperly tightened spark plug can damage
the engine. If a plug is too loose, a piston may
be damaged. If a plug is too tight, the threads
may be damaged.
9. Reinstall the spark plug cap. Take care to avoid
pinching any cables or wires.
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