BN Products BNG4000iE, User Manual

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9.3 Spark plug
Please replace the spark plug according to the original type: F7TC
1
）
Remove the spark plug cap.
2
）
Use the spark plug socket wrench to remove the spark plug.
3
）
Visually inspect whether the spark plug insulator is damaged.
Replace the spark plug if it is damaged.
4
）
Measure spark plug clearance with thickness gauge. Bend the
side electrodes to adjust the clearance.The clearance shall be
between 0.70 and 0.80mm.
5
）
Check that if the spark plug gasket is in good condition.
Install the spark plug, tighten it with the spark plug socket wrench, and
press down the spark plug gasket. Cover the spark plug cap.
Please use spark plugs with appropriate calorific value.