Build Worker BG2300R Manuel D'utilisation page 56

(3) Spark plug service
Recommended spark plug: BP6ES, SPR6ES (NGK)
F6TC, F6RTC (LD)
To ensure proper engine operation, the spark plug must be properly
gapped and free of deposits.
1. Remove the spark plug cap.
2. Clean any dirt from around the spark plug base.
3. Use the wrench supplied in the tool kit to remove the spark plug.
4. Visually inspect the spark plug. Discard it if the insulator is cracked
or chipped. Clean the spark plug with a wire brush if it is to be reused.
5. Measure the plug gap with a feeler gauge.
The gap should be 0.7~0.8mm (0.028~0.031 in). Correct as necessary
by carefully bending the side electrode.
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