Honda FourTrax Foreman TRX520FM1 2020, Owner'S Manual, Page: 173 / 283

Servicing Your Honda 163
Spark Plug
8. With the plug washer attached, thread the spark plug in by hand
to prevent cross-threading.
9. Tighten the spark plug:
• If the old plug is good:
1/8 turn after it seats.
• If installing a new plug, tighten it twice to prevent loosening:
a) First, tighten the plug:
b) Then loosen the plug.
c) Next, tighten the plug again:
1/8 turn after it seats.
NOTICE
An improperly tightened spark plug can damage the engine. If a
plug is too loose, the piston may be damaged. If a plug is too tight,
the threads may be damaged.
10. Connect the spark plug cap. Take care to avoid pinching any
cables or wires.
11. Install the remaining parts in the reverse order of removal.
NGK: 3/4 turn after it seats.
DENSO: 1/2 turn after it seats.
20 TRX520FM1 FM2-31HR46600.book 163 ページ ２０１９年４月２５日 木曜日 午後６時２分