I Have McCulloch 3540P which I used for the first time in about 8 months, it started ok and run for a bit then it began to slow down, Once i checked everything i found the plug to be quite black and sooty. I have since changed the plug for new and again within 10 mins it was completely fowled up again. What do I need to do to fix that problem?

Glen Bailey, April 2010

i have mcculloch 839 chiansaw no fuel gettin to primer thanks bill;

BILL PRICE in telford shrops, August 2010

I think you have a Briggs & Stratton engine with the carb on the tank - and it needs a new diaphragm.

phil_saunders(a)bigfoot.com

Phil Saunders, April 2010

Either bad fuel, blocked air filter, over filled engine oil, worn engine.

Husqvarna man, April 2010