Originally Posted by
BobL
I'm not necessarily saying this is what happened in your case but even really cheap saws with so little use usually don't seize just up like that. Based on your description my first reaction is immediately, it's been very badly tuned, or run on straight petrol, or close to straight petrol. The Stohl guys I know are merciless on people that runs straight petrol in their saws.
Small motor manufacturers are on a hiding to nowhere placing their products in the hands of occasional users where it's so easy for a novice or occasional user to mix up petrol supplies. If in any doubt chuck it out. I strongly recommend starting from scratch with the mix if its more than a month or so old.
BTW The 25:1 ratio is deliberately done to cover their asses and just chucks a heap of unburnt gunk out of the exhaust doing the operator no favours. Those saws run fine on 50:1 using a quality two stroke lube.