Spark plug service, Servicing your mower 37 – HONDA HRR216TDA User Manual

Page 39

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 cross-threading.

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.

SPARK
PLUG

SPARK PLUG CAP

SPARK PLUG WRENCH

0.028 ~ 0.031 in

(0.7 ~ 0.8 mm)

SEALING
WASHER