Spark Plug Service - Honda Marine BF15D Owner's Manual

SERVICING YOUR OUTBOARD MOTOR

Spark Plug Service

RECOMMENDED SPARK PLUGS:
CR5EH-9 (NGK)
U16FER9 (DENSO)
Incorrect spark plugs can cause
engine damage.
1. Unlatch and remove the engine
cover (p. 64 ).
2. Disconnect the spark plug caps
from the spark plugs.
3. Remove the spark plugs with a
spark plug wrench and screwdriver
supplied in the tool kit.
72
SPARK PLUG SPARK PLUG CAP
WRENCH
4. Inspect the spark plugs. Replace
them if the electrodes are worn, or
if the insulators are cracked or
chipped. Clean the spark plugs
with a wire brush if you are going
to reuse them.
0.031
(0.80
5. Measure the spark plug electrode
gap with a suitable gauge. The gap
should be 0.031 0.035 inches
(0.80 0.90 mm).
0.035 in
0.90 mm)