Pete H

Ok, another senior moment. Apologies “spud” for some barmpot reason I thought the name was raffle, I can see now that it reads “Raffle sponsor”. Anyway, back to the drawing board. pete

Hello all, Me again, thanks once again. What i forgot to mention was that as the saw became harder and harder to start I spoke to a tree surgeon friend of mine who put me in touch with a Stihl agent, he suggested, as I did not use the saw for some time, squirt a bit of Easystart to “get it going” This did actually work, however, as mentioned it became unpredictable and erratic and bog down. I then decided to once again remove/strip carb and this time replace the diaphragm with an aftermarket kit. All looked identical so I felt happy, but unfortunately the problem was still there, not immediately, but soon after a short period of running. This is where started to look towards a new carb but became unsure what to order as Stihl UK told me that this was not the recognised carb for the year and model/serial number. Now silage is over I can return to the workshop and will obviously persevere with all your suggestions. I can only thank you all once again, I’m determined to find the cause/fault. Cheers, Pete

My apologiesRaffle for the delay in replying/acknowledging your reply. Trying to get the silage in. What can I say, such an in-depth response to my problem. With great respect to all here it’s good to have the benefit of experience such as yours Raffle. I’ll let you know how I get on as I have only browsed your reply. thanks Pete

Thank you all for your help, I really do appreciate it. I can normally sort this type of stuff out but for fear of labouring a point my confusion is that Sthill uk say that the carb WT394 was not fitted to this saw. Anyway, I’ll take all your advice and pull it out of the bin and try again. pete

Good evening all, I’m Pete from Bersham near Wrexham North Wales. I’m a newbie here so be gentle, I’ve been a chainsaw user for many years mostly for home/farm use for trimming back and firewood. I have always maintained/repaired my own equipment, replacement of chains bars and dismantling of carb for running issues etc. However, I have a problem with a MS 260 which my son bought second hand, it’s an old saw and up until now has never really been a problem. I was experiencing starting problems leading up to this. My reason for asking you professionals is that after cleaning the carb many times it starts, bogs down and in my opinion screams at high revs (weak mixture). After “rooting” around I believe that the carb fitted is incorrect, WT394. Contacted Sthill and they have no record of my saw? I know that the simple answer would be replace the carb but this is a puzzle I would like to get to the bottom of. I was a mechanic by trade and my preference is to repair rather than replace, that to me is the easy option. My apologies for an initial lengthy post, but I would be extremely grateful for some input/advice on this. Thank you all, Pete