Hi its me again.
Another question this time about carbs, I have been given an old carb for my OS H 40P it is sticky and I can not move the throttle arm and what to know do I strip it and soak it or just soak it.
If stripping it is the option how do I start

Thanks David

It just dried castor oil.

Soak it in something to loosen the dried crud.

soak it in some fuel.

sometimes a little heat from an air gun will work if after soaking it still does not want to rotate.it also helps to remove the barrel stop screw .

A dip in hot detergent (dish soap) and some movement should work well, a little oil will keep it loose until you use it.

WD 40, fuel, soap, denatured alcohol. all will desolve the gelled castor oil don't force it though make sure the jets are clear by putting some fuel line on the input nipple with a little fuel and gently ...GENTLY!! blowing. if you blow to hard it'll go ALL OVER and glow fuel taste like/// glow fuel oh yeah unscrew the needle valve first
I would save yourself some head aches and get a new Oring for the needle valve as they don't last long and will drive you nuts with air leaks.

Thanks