Early 066 difference to late 066?

[MustangMike]

I used an AM recoil starter on a MS 460, just replaced the cord with OEM Stihl Elastostart and it worked very well.

 

[merc_man]

Is ther a differance in 066 and ms660(661) pull starter cover

 

[Normzilla]

Good info all around. Definitely a worthy enough saw to revive.