mcculloch flywheels

[steve miller]

have 3 different flywheels ..??  ..does mc6 have special flywheel or just crank keyed diff. 
one flywheel is keyed slightly before long center mark ..mc6.?? ..
one is keyed pretty much straight up ..5 degree..??
one is keyed slightly ahead ..std ..??

[steve welte]

From what I've experienced for the most part it doesn't mean squat except you get a hotter spark with an advanced flywheel. Now that being said that is if your engine does not go into maverick ign. If you get maverick with the wrong flywheel then you get the ign advance and toast a nice engine. best to increase point spring pressure to keep from going into maverick. Most of the time I just slot the coil holes to advance and use a stock flywheel and a full key

[Tom Day]

have 3 different flywheels ..??  ..does mc6 have special flywheel or just crank keyed diff. 
one flywheel is keyed slightly before long center mark ..mc6.?? ..
one is keyed pretty much straight up ..5 degree..??
one is keyed slightly ahead ..std ..??

Steve, yes straight up is 5 degree, to the left is regular. I use them both since I don't run maverick and set my tension hard.