HONDA HRS216SDA - Manual (Page 38)

Spark Plug Service
Refer to page 46 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 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:
Old plug: to turn
New plug: turn
NOTICE
A loose spark plug can overheat
and damage the engine.
Overtightening the spark plug can
damage the threads in the cylinder
head.
7. Install the spark plug cap on the
spark plug.
MAINTENANCE
36
SPARK PLUG CAP
SPARK PLUG
SPARK PLUG WRENCH
0.028 ~ 0.031 in
(0.7 ~ 0.8 mm )