On Thu, 15 Sep 2005 18:31:50 +0000 (UTC), "Chris Selwyn-Smith"
wrote:

"Alan" wrote in news:1126626730.822726.93670
:

Not neccersarily the solution to your problem but a lot of Stihl machines
have a gauze spark arrestor in the exhaust that after a time can clog this
will lead to loss of power and stalling

I had similar (exhaust mesh bunged up) on my BIL's strimmer but that
wouldn't 'rev' when cold either?

All the best ..

T i m