17
Maintenance
Clean the spark plug
Recommended spark plug models: NGK: BPR7ES. Champion RN7YC.
1 Remove the spark plug cap.
2 Clean the spark plug base.
3 Remove the spark plug with the spark plug socket spanner.
4 Inspect the spark plug insulator visually for damage. If it is damaged, replace a new one.
5 Measure the spark plug clearance with a feeler gauge. The clearance should be kept between
0.70 and 0.80mm.
6 Inspect if the washer of the spark plug is in good condition.
7 Reinstall the spark plug and tighten it with the spark plug socket spanner. Press down the
washer of the spark plug and place the spark plug cap.
Valve clearance (should be conducted by a professional person)
Remove the cylinder cover and measure the valve clearance with the feeler gauge. The clearances
are 0.1mm for the inlet valve and 0.15mm for the outlet valve.
Spark plug socket spanner
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