Every 12 months.
Correct operation of spark plugs is very important for the efficient operation of the engine.
Order of execution
1. Unscrew the mounting screws and remove the cover from the valve cover.
2. Tag the high voltage wires and disconnect them from the spark plugs.
3. Clean the area around the spark plugs and remove the spark plugs.
4. Negative battery cable and "mass" motor wire.
5. Measure the spark plug gap with a feeler gauge or special tool.
6. Adjust it by bending the tip.
7. Reinstall the spark plugs. To make installing spark plugs easier, fit a short piece of tubing over the spark plug. It will act as a universal joint and will not allow damage to the threads.
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