Spark Plug - Honda 2004 XR400R Owner's Manual

Spark Plug

Refer to Saf ety Precautions
Spark Plug Recommendation
The recommended standard spark plug is
satisfactory for most riding conditions.
However, if you plan to ride for extended
periods at high speeds or near maximum power
(high engine rpm) in hot climates, or plan
extended riding in cold climates, a different
plug may be recommended.
Standard
For extended high
speed riding
84
Servicing Your Honda
on page 45 .
DPR8Z (NGK) or
X24GPR-U (DENSO)
DPR9Z (NGK) or
X27GPR-U (DENSO)
Use only the recommended type of spark plugs
in the recommended heat range.
Using spark plugs with an improper heat range
can cause engine damage.
(1)
(1) multi-purpose wrench
(2) center electrode
(3) side electrode
(4) spark plug gap
1. Clean any dirt from around the spark plug
base.
(3)
(2)
(4)