Honda Marine BF75A Owner's Manual page 86

SERVICING YOUR OUTBOARD MOTOR
6. Install the spark plugs carefully,
by hand, to avoid cross-threading.
84
7. After each spark plug seats, tighten
with a spark plug wrench supplied
in the tool kit to compress the
sealing washer.
If reinstalling used spark plugs,
tighten 1/8 - 1/4 turn after the
spark plugs seat.
If installing new spark plugs,
tighten 1/2 turn after the spark
plugs seat.
Loose spark plugs can overheat
and damage the engine.
Overtightening the spark plugs
can damage the threads in the
cylinder head.
CORD 1
CORD 2
CORD 3
CORD 4
8. Attach the spark plug caps. Each
cord is marked with a number near
the spark plug cap. Match the cord
numbers with the cylinder
numbers, as shown.
9. Install and lock the engine cover.
PLUG 1
PLUG 2
PLUG 3
PLUG 4