V 1.4
8839615
For technical questions call: 1-800-665-8685
20
SPARK PLUG
Improper installation of the spark plug could damage the engine.
•
An overly tight or cross threaded spark plug will damage the threads of the cylinder head.
•
Carefully turn the spark plug by hand into the threads. If the spark plug is new, tighten it with a wrench about
½ turn past finger tight. If you are reusing the old spark plug, tighten it with a wrench about 1/8 turn past
finger tight.
Do not allow dirt or debris to enter an open spark plug hole.
•
Any dirt or debris that enters the spark plug hole will cause severe engine damage.
•
Always cover the spark plug hole while the spark plug is out of the hole.
To maintain a proper functioning spark plug, keep the plug clean and free of carbon.
SPARK PLUG REMOVAL,
INSPECTION, REPLACEMENT
This vehicle uses a resistor-type spark plug. Improper
replacement spark plug selection may cause problems
with the ignition system, resulting in poor vehicle
performance. ONLY use the recommended spark plug
or equivalent as shown in the chart below. The spark
plug should be checked every 50 to 100 hours of use.
Recommended replacement spark plug:
C7HSANGK
NOTE: ALWAYS thread a spark plug in as far as
possible with your fingers first when installing, then
tighten it with a wrench.
1. Disconnect the spark plug wire cap from the spark
plug.
2. Clean any dirt or debris from around the spark
plug.
3. Remove the spark plug using a plug wrench and
cover the spark plug hole.
4. Inspect the spark plug electrodes and the center
porcelain insulator for deposits, erosion, or carbon
fouling. If there is heavy erosion, replace the spark
plug. Otherwise, remove carbon from the plug
using a plug cleaner or wire brush. Clean the
center electrode by using a nail file to make it flat.
5. Using a feeler gauge, check and adjust if
necessary the electrode gap to ensure proper
ignition. The gap (Fig. 44) should be 0.24 - 0.28
inches (0.6~0.7mm).
6. Check to ensure the plug washer is in good
condition.
7. Thread the spark plug into the spark plug hole by
hand while ensuring it is not cross-threaded. Using
a plug wrench, tighten a NEW plug to ½ turn past
finger tight, or an OLD plug to 1/8 turn past finger
tight.
8. Reconnect the spark plug wire.
Fig. 44
