Honda Shadow Phantom 2020 Manual page 57

Check the spark plug gap using a wire-
5.
type feeler gauge.
If adjustment is necessary, bend the
u
side electrode carefully.
The gap should be:
0.031 - 0.035 in (0.80 - 0.90 mm)
Spark plug gap
Make sure the plug washer is in good
6.
condition.
Install the spark plugs. With the plug
7.
washers attached, thread the spark plugs
in by hand to prevent cross-threading.
8.
Side electrode
9.
Spark Plug
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:
NGK: 3/4 turn after it seats.
DENSO: 1/2 turn after it seats.
b) Then loosen the plug.
c) Next, tighten the plug again:
1/8 turn after it seats.
NOTICE
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.
Install the parts in the reverse order of
removal.
When reinstalling the spark plug caps,
u
take care to avoid pinching any cables
or wires.
Checking Spark Plug
u
55