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I bought this 92 Formula Plus and noticed the main jets were 270 on the rt and 300 on the left (I may have that backwards). Something with the rotary I am told. The plugs are a good color, although stock main jets are a few sizes larger, but are also different in size- left vs. right. Anybody know anything about this? Your input's appreciated.
 

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Hi, Willard, I checked what the jetting is supposed to be on the 92 Formula Plus, stock it should be a 280 on the PTO (clutch
side) and a 300 on the magneto (pipe) side. The jetting is not the same because the magneto side pison runs hotter than
the other one (because of the pipe), so it's jetted a little richer to compensate. If your plugs are a nice chocolate brown
colour, I would leave it like that.
Good Luck
Pat

A low windshield is nice, but frostbite isn't
 
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