i have a rotax 500 on a saxon tour and it is a beast to kick start
in fact the 500 rotax is so hard to start the matchless made in the late 80's with that engine and no electric start should
be almost free if up for sale
i had a r90s bmw and the 5 speed box needed worked on so for about 6 months i had a /5 4speed in it with a kicker
and got it started that way a couple times....and it was also a beast
NO WAY AM I GOING TO KICK A 660 Yamaha motor after that i like my leg attached to my body
dave
if you do manage to get one on a 660 ignition needs modified to be set after top dead center
or when it kicks you back ...we can pick up the pieces of you in an other country or state