i see this asked a lot , yet its one of the most easy jobs to do , its just one nut , but you do need a special tool but this tool is only a way of applying force to the flyweel to pull it of the crank .
some people locktite the flyweel nut and flywheel on too,ive come across this many times and it is
frustrating and can take a lot of force to remove , why they do this i dont know , ive had a few cagiva mitos shred the woodruff key area and shear the woodruff key itself causing bad running through
ignition timing moving , maybe this is why they load them up with loctite , i dont just fit a new wood ruff key if needed and torque nut to require specs
new Cagiva Mito 125 woodruff keys here on amazon uk
you will need this flywheel removal tool you can get them off ebay uk for about £20 you can buy cheaper universal ones as well.
i have both but prefer to use a specific tool for each bike i work on if possible .
remove starter bendix and starter ring
to avoid movement and damage while you apply
pressure with you socket wrench .
puller is set up as instructions suggest and its stable
solid on the crank .
in which case it might take a fair bit of force .
and remove the stator make sure you mark the timing
with a scribe or with white tipex or similar so you
can retime you engine easily on refitting
refitting , just do the reverse , make sure timing marks are not cleaned off and refit aligned , as long as woodruff key is fitted well and everything goes back ok its should be no problems whatsoever .
also a common one is fitting the flywheel without the woodruff key or it falls out
just as you fit it , or a sheared woodruff key or woodruff key area which fails to
lock flywheel in place .
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