Sam white

Cheers Chris. I took a better look at it and the piston and rings looked almost new but inside the pot is some nasty scoring. I'll use it for parts I think . Thanks for the info on the size I'll go and check now.

Hi I've been buying used and non running stihl chainsaws ,strimmers blowers etc for the last year and servicing them getting them running well and selling for abit of spare cash . Just picked up a km unit not quite sure what model as the sticker with the serial number is missing. I paid £25 for it . It's not seized as the flywheel turns then stops before the piston gets to the top. I thought for £25 id buy it as I was interested in diagnosing the problem and seeing if I can fix it. After taking the valve cap off it became clear one of the valve rods had dropped and was jamming the piston. Only the 2nd time I've worked on a 4-mix engine. The 1st was a br600 I picked up for £80 . All what I did with that was sort the valve clearances and got her running great. My question is . Has anyone had this problem and did you get it repaired? If so how much did it cost? did you repair it yourself and is it worth the time to repair it. I'll repost with my progress . Also if anyone can identify what model this is . It would save me abit of time researching it. Many thanks Sam