Spark Plug Service - Honda HRT216SDA Harmony II Owner's Manual

MAINTENANCE

Spark Plug Service

Refer to page 47 for replacement spark plug numbers.
NOTICE
An incorrect spark plug can cause engine damage.
For good performance, the spark plug must be properly gapped and
free of deposits.
1. Disconnect the spark plug cap
and remove dirt from the area.
Use a spark plug wrench to
remove the spark plug.
2. Inspect the plug; replace it if the
electrodes are worn, or if the
insulator is cracked or chipped.
Clean the plug completely if you
are going to reuse it.
3. Set the gap to 0.028 ~ 0.031 in
(0.7 ~ 0.8 mm).
4. After the plug seats, tighten it
as follows to seat the washer:
1
Old plug:
8
1
New plug:
NOTICE
A loose spark plug can overheat
and damage the engine.
Overtightening the spark plug
can damage the threads in the
cylinder head.
5. Install the spark plug cap on the
spark plug.
36
1
to turn
4
turn
2
SPARK PLUG
SPARK PLUG CAP
0.028 ~ 0.031 in
(0.7 ~ 0.8 mm )
SPARK PLUG WRENCH