Mercury Snowmobiles Discussion Board

That's what I was thinking as well. I will clean the carb. As far as the plug goes the last guy who repaired it wrote 93 octane only on the fuel cap. I assume to keep from possible detonation with the hotter plug. Why would you put a hooter plug in to begin with ? Does it make it easier to start?

Hi
Just got a new to me scoot and checked the plug. It's a B6HS ? Aren't these machines supposed to be br8hs? Why a hooter plug? Also really idles high when I take the choke off. Haven't cleaned the carb yet because it runs fine with the choke on.
Should I go back to the stock plug?

Thanks