Was given this ATV It would not start.  Installed new battery new gas and drained and replaced all fluids. Got it running and it seems to idle fine and drive fine.
The problem is that when I first start it it turns over fine and pops right off Run it for awhile shut it off it seems that the battery is weak and will not turn it over fast enough.Well playing with the starter seliniod I discovered that I could not get a spark or get the starter to turn.  I pulled the starter and found out the one of the brushes were worn all the way to wire lead. So my question is this problem enough to get a slow motor turn over on start up.

Second question has anybody seen a reciol starter for this machine?  I saw a older 2x2 with a pull starter on the same side as the starter switch.
Thanks for any info