M400 - What Do I Need to Look For When Buying One?

[brad black]

that sort of ignition add on crap is very common on m400 out of japan.  make sure the idle mixture is good, it's the first thing i do to them.  some m400 you can wind the throttle fully open and they won't rev up at all when cold.  they're almost dangerous.

[dbran1949]

drastically boosts ignition coil current.