My latest tip find, this Homelite looked in pretty fair condition still with a spool of line and even the shoulder strap. Cleaned out the mud wasps from the air filter and the muffler and the small breather filter in the fuel cap. Also the foam in the air filter just crumbled away when I touched it so took it out completely for a test fire. Some fresh fuel, 6 pumps of the primer and lo and behold it tried to fire up. A bit of choke and some throttle and away she went but bogged down with choke off and throttle up. Noticed the head wasn't spinning. A bit of a twist of the spool and felt the shaft free up. Started it again and got it to run at about half throttle but it won't take full throttle. So, my question is, how do I tune this one? are these red and white bits shown in the photo anything to do with it and what do they do?
Thanks in advance.
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2015/01/full-7394-19495-dpp9178.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2015/01/full-7394-19496-dpp9179.jpg)