_Chris

Hi again and thanks for all the interest shown in this topic. I noticed that air is being drawn out of the carb and into the primer bulb along with a little fuel when I prime. The feed line is full of fuel and air free. So I suppose air is leaking into the fuel somewhere in the carb. I took the cover off the metering chamber and did the suck blow thing that you suggested on the one way valve under the brass retaining cap in the picture and found that I could draw air in as well as blow it out - so I'm guessing that it's knackered. I did the same thing on the H and L holes after removing the springs and needles. I could both suck and blow on these too - not sure if that's supposed to happen. Anyway, I've ordered another carb from fleabay - I'ts only £15 which is probably less than the cost of a kit to do an overhaul, which to be honest, looks a bit tricky!

Doh! - I new it was a silly idea as soon as I posted. I'll dismantle the carb again and re-inspect and re-clean. Cheers

Thanks all for the advice. The plug looks dry Spud after I pulled the saw over with full choke 10-15 times & the side of the piston isn't scored. I haven't tried swapping the spark plug for a new one yet & I haven't loaned the chainsaw to anyone. I suspect that there is still a blockage somewhere in the carburetor. If I were to remove the high speed and low speed mixture screws and pull the chainsaw over should I expect to see fuel coming out of the holes?

Hi - Here's what I've tried so far: Checked for spark - OK Used freshly made up fuel Replaced fuel filter in fuel tank Cleaned carb - removed some grassy looking stuff from filter in the carb. I thought that this was going to solve it but there is no sign of life at all when I pull the cord. Funny thing is it was working OK earlier in the year. I can see the fuel being pulled through the line when I prime it. Is there any way I can test the carb further? Many thanks Chris