Every 60,000 km of run.
Order of execution
1. Disconnect wires from spark plugs.
2. Remove the spark plugs.
3. Measure the spark plug gap with a feeler gauge or special tool.
4. Adjust it by bending the tip.
5. 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.
Visitor comments