Super head OEM

The engine was used for 5,000 km without replacement from assembly to setting.
I used to carry it around in Spare.

Unlike a car, the manufacturer's recommendation was to replace the engine oil in 1/3 of the time, so I wondered about the replacement time.
If you replace the coil after it is out of tune, it may put a strain on the coil and cause puncture.
(Because it is common for Coil to Puncture in light cars. Also, since it is a single cylinder engine, if the Coil Punctures when you are on the road, you will not be able to return home).

Also, in the case of motorcycles, the screw threads of the plug may gnaw on the carbon, so it was a good decision to replace the plug as soon as possible. I was scared to remove the plug because it was very thin and hard, so I was afraid that it might break. It has been about 4000 km since I stopped removing it.

If you use the proper tools, you can rest assured that you are doing a good job.:I used a plug wrench from Set tools.
I also applied the included Grease to prevent galling, but it is better to look at it periodically. The best way to prevent galling is to remove it. View detail

Normal and most stable.

The EPlug is used because the external head has been modified. This is a model that is not often found in motorcycle shops so it is nice to have it readily available. The reliability is neither good nor bad, the stability is Number one, because it is thought that the Iridium plugs cannot be fully utilized unless it is a super strong coil like the iron core is sticking out, this is enough. View detail

For Super head

Takekawa Super head + R4v required for purchase.
It is very helpful because it is not put at Home center.
Stable operation with safe NGK made! View detail