Hi was using chainsaw fine 15 20 mins and it then would not rev.Thought it had run out of fuel.Mixed up some fresh new fuel - same. Plug gap OK.Will eventually start on Choke with throttle in start position but will not run. Suspect fuel starvation. Any tips would be welcome.Also another saw won't even fire - good spark + gap OK + new fuel. Any thoughts
Model is :Tarus chainsaw 42cc 18" - I know!!

Mike Moore, January 2008

Re your Tarus 4500, I have the same model and problem. I tried replacing the CDI magneto assembly, new plug, hot plug, injecting fuel into the chamber. Nothing works. Did you ever get yours started? If so how?
Mine ran for about 1 hour in total.

sapper886, October 2009

Carburettor fuel filter was gummed up. Cleaned out now OK
Thanks to all
Mike

Mike Moore, February 2008

HI Again - Chainsaw is Brand new and has done only 15 -20 mins work until it started acting up - tank filter is spotless Would a carb cleaner help?

Mike, January 2008

I have found over the years that most well maintained chainsaws that do not run right after you adjust carb,clean air filter,replace fuel filter and spark plug will need a carb rebuild.If that does not work you have a more serious problem like bad coils,worn seals something inside engine that is worn out.

woodyman, January 2008