yz426 timing

[FITT#421f]

Can anyone explain in ALOT of detail how to time a yz426motor.

thanks for the help.

[ss440ex]

Are you speaking of cams to crank shaft timing?

Aliegn the lines off of the flywheel L/H side, through the timing hole. Make sure piston is at top dead center.

The cams have dots, exhaust cam 9 o-clock position

intake cam at the 3 o-clock position.

Level with the top of the cyl head.

Hope this helps.....

[ss440ex]

And to be SAFE, always turn engine over by hand with spark plug removed.

Do you know if the engine has the yz450 decomp cam?

That is a different precidure....