Honda AFP125CRF 2018 Owner's Manual page 57

5. Check the spark plug gap using a wire-type
feeler gauge.
If adjustment is necessary, bend the side
u
electrode carefully.
The gap should be:
0.8 to 0.9 mm (0.03 to 0.04 in)
Spark plug gap
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.
8. Tighten the spark plug:
Side electrode
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. Install the parts in the reverse order of
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:
NGK: 1/2 turn after it seats.
DENSO: 3/4 turn after it seats.
b) Then loosen the plug.
c) Next, tighten the plug again:
1/8 turn after it seats.
NOTICE
removal.
When reinstalling the spark plug cap,
u
take care to avoid pinching any cables
or wires.
Checking Spark Plug
u
53