Reading Spark Plugs Pictures and explanations (cause and effect) to be used in visual inspection of spark plugs. The spark Plug insulator color and condition can indicate how the engine is running. Color changes indicate such things as combustion temperatures or engine condition.

each Chainsaw carburetor have three needles, L, H, T. if we screw it in clockwise, means make it tighter, otherwise, if screw it in anticlockwise, then make it loosen. 1) for T needle, if turn clockwise, then there will be more fuel go into the cylinder, or if turn anticlockwise, there will be l

1.Remove the top cover on the chainsaw to expose the spark plug.2.Remove the spark plug.3.Place the spark plug wire onto the spark plug but do not install the spark plug into the cylinder, leave it dangling loose.4.Holde the boot on the end of the spark plug wire with your hand and place the electro