How to choose the correct spark plug

In accordance with the requirements of the manual, select the spark plug of the specified specifications and models.

The contact surface of the spark plug with the gasoline engine must be clean and flat. When installing the spark plug, a copper washer must be installed on the spark plug to ensure the tightness of the cylinder. When tightening the spark plug, it is best to use a torque wrench to tighten the spark plug to the specified torque. If there is no torque wrench, first tighten the spark plug by hand, then use a socket wrench to screw 3/4 turn.

While cleaning, immerse the spark plug in the gasoline, brush the dirt with a brush, or gently remove the deposit with a spatula. Do not use a metal brush to scrub, nor use a fire to replace the cleaning, so as not to damage the spark plug.

After the spark plug is cleaned and dried, the spark plug gap should be adjusted according to the instructions in the gasoline engine instruction manual.

In addition, keep the spark plug insulator partially clean to avoid affecting its normal operation.

Under normal circumstances, the four-stroke gasoline engine works 100~200 hours, and the two-stroke gasoline engine works 30~50 hours. It is necessary to disassemble, clean and adjust the spark plug board gap. (Hate easy)