Willard

thank you all, good advice, appreciate it.

Hi everyone, would appreciate some advice; I am going to buy a new chain saw for light domestic use, i.e cutting up logs for firewood and basic tree pruning. I am leaning towards a petrol saw (big garden) and not electric, and I want something solid and reliable that will start easy. Budget up to £200. I don't need a professional grade saw, but want quality (having seen how crappy saws like the Ryobi are!) Dozens out there so hard to decide . What do you think?

Hi, thanks for the replies, as requested I have enclosed pictures, and I think you're right- the gear is plastic and sits inside the recess where the shaft emerges from the casing..

Hi, I have inherited a Ryobi PCN 4040 two stroke chain saw. The saw starts OK, but there is no oil to the cutter bar. I have removed the bar and checked no chip blockage, there is plenty of fresh oil in the tank, I suspect that the oil pump is not working . Am I right to say that to get to the oil pump I need to take the bottom off the saw? From the diagrams it appears to be deep inside the crankcase. Are spares available? thanks in advance

thank you

I tried the compression tester on a Ryobi PCN 4040 which does run, the reading is about 125 psi, so very similar to the Stihl 010 AV. What do you think?

thanks for that suggestion, I will try that.

thank you, very helpful. So if the underlying problem is compression, does that mean that I need to replace the piston rings and the piston?

thank you for your reply, I had a look into the cylinder through the exhaust port and the inside is bright and shiny, no major scoring but there is surface wear, the compression tester is from Halfords, I re checked the compression and it is about 120 psi. The plug does get wet, but not so bad that the petrol runs out of the spark plug hole. I tried lowering the saw on the pull rope- it descends very slowly, in fact it stops. The bad news is that I have now broken the rope rotor! So I will need to find a replacement part- does anyone recommend a good parts supplier? L&S Engineers have an OEM part for £9 plus VAT which is a lot for a plastic spool!

Hi everyone, I am a chainsaw novice and would appreciate your advice. I have just inherited a Stihl 010 AV from my late father in law. He loved the saw but stopped using it years ago due to ill health. So it has not run for years. I am keen to get it running as I have a lot of firewood to cut. I have drained the old fuel and mixed fresh unleaded with two stroke oil at 25:1, new spark plug, stripped and replaced the two diaphragms & needle in the Walbro WT carb using a re build kit, I used a Sealy spark tester to make sure it has a spark, it does and I get about 120 psi on a compression test. But it just won't start. I did manage to get it to fire and run for a couple of seconds and then it cut out. I think this model was built with a magneto and points, but I see there is a small electrical component mounted near the coil. (see picture). I have removed the silencer from the engine and the piston rings appear to move freely and there is no obvious scoring in the cylinder bore. Does any one have any suggestions please? I'm sure I am missing something obviuos. thanks for your help.