Honda HRR216VXA Owner's Manual page 34

SERVICING YOUR MOWER
Spark Plug Service
Recommended spark plugs:
BPR6ES (NGK) or W20EPR-U (DENSO)
For good performance, the spark
plug must be properly gapped and
free of deposits.
NOTICE
An incorrect spark plug can cause
engine damage
1. Disconnect the spark plug cap
and remove dirt from the area.
2. Remove the spark plug with a
spark plug wrench.
3. Inspect the plug; replace it if the
electrodes are worn, or if the
insulator is cracked or chipped
4. Set the gap to 0.028 ~ 0.031 in
(0.7 ~ 0.8 mm).
5. Install the spark plug carefully, by
hand, to avoid crossthreading.
6. After the plug seats, tighten it as
follows to compress the washer:
Old plug: 1/8 to 1/4 turn
New plug: 1/2 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.
32
SPARK
PLUG
SPARK PLUG CAP
SPARK PLUG WRENCH
0.028 ~ 0.031 in
(0.7 ~ 0.8 mm)
SEALING
WASHER