For MONSTER S2, it is easy to cause Knocking unless it is 3000 rpm from the 3rd speed or more, even if cruising is not enough, even cruising is dangerous. For 2nd gear it's more than 2800 rpm. Just about 3000 rpm of 4th gear is 60 km / Because it becomes h, it became the boundary of Downshift and it felt unevenly repeated up and down depending on traffic conditions. Also, I could not say that the startability of the first one was good and I was thinking about improvement.
Because the shape of the combustion chamber was not excellent with air-cooled 2 valves, I thought that the Spark plug would work, so I reached an exchange.
Originally wearing STD Shape's Nickel GoldPlug. Since it is a brand new, it is not wearing out.
I was uncertain how far we could improve, but I hit the idea!
The first start.
Previously, it took time to kyun, kyun, kyun, kyun and the first bombing, but after the exchange it started up and startup up in kyun, kyun.
Regarding acceleration and cruising as well, the Knocking rotation speed dropped, the 3rd speed or more was 2700 rpm, the 2nd speed became very easy to ride from 2,400 rpm.
As for the sense of power it does not change so that. is. However, the extension of rotation was a little better.
Now we can not use other than Windshield IRIDIUM.
All past vehicles are Windshield IRIDIUM, but it is still Must-have item!
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