Anyone with knowledge on strimmer engines?

[Andy no gooder]

Hi,

I am having some really frustrating problems with a spear and jackson sjbc 30 petrol strimmer and brush cutter.

I shall jump to the knit and grit. Last year i started the strimmer with old/stale petrol and oil mix. After i learned of my mistake i drained the tank and stored it away untill now. The strimmer starts then slowly dies i can prolong it by revving but it will eventually die out. I have fresh petrol/oil mix cleaned spark plug. Helppppp.

Thank you.

[Andy no gooder]

I have checked the idle screw, air filter, choke. Im begining to think its more of a internal engine problem. I have took the carb off and gave it a once over did not go into it to much tho.

I will just have to keep fiddling with it i dont really want to just bin it because its only 2 year old with about 15-20 hours running time if that.

The other half is not to impressed as we seem to have our very own beanstalk growing and the garden needs a good goin over. I should just pave the whole lot and be done with grass cutting tools. lol

Thank you for your replies.

[Andy no gooder]

Ok people i have been messing around with this today i cleaned the spark plug put it back in started it up kept it alive for around 45-60 seconds. I pulled the spark plug back out and it was black again.

The piston seems to be like a black sooty type colour could this be the problem?