Spark Plug Service - Hyundai HG4050 User Manual

6.5 SPARK PLUG SERVICE

NOTE
DO NOT RINSE SPARK PLUG IN WATER. FOLLOW GUIDELINES AND BE
CAREFUL NOT TO OVERTIGHTEN THE SPARK PLUG.
Recommended spark plug: F7TC
Check the spark plug gap and clean the carbon deposits at the bottom of the spark
plug.
TIGHTEN 1/2 TURN WHEN INSTALLING A NEW SPARK PLUG.
TIGHTEN 1/8 TO 1/4 TURN WHEN RE-INSTALLING AN OLD SPARK PLUG.
1.
Remove the spark plug cap.
2. Remove the spark plug with the spark plug spanner.
3. Visually inspect the spark plug. Replace with a new plug if the insulation is
cracked or chipped. Clean with a wire brush if the spark plug is reused.
4. Measure the spark plug gap with a feeler gauge. The normal value is:
0.7-0.8mm (0.028- 0.031in). Adjust the gap by carefully bending the
electrode.
5. Carefully reinstall the spark plug by hand, to avoid cross-threading. A new
spark plug should be tightened 1/2 turn with a spanner. A used spark plug
should be tightened 1/8 to 1/4 turn with spanner.
6.
Reinstall the spark plug cap.
NOTE
The spark plug must be securely tightened or it could cause the spark
a nk•• F i l te r••
plug to heat up, enough to damage the engine.
Never use a spark plug with an improper heat range.
•• a nd•• f ilter.
olvent••
s ert•• i t.
(0.028-0.031in)
36
0.70-0.80mm
HG SERIES