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Found 1 result

  1. Hi. Having some issued with a couple of years old ms250 running an 18 inch bar. It seems that sometimes the nose sprocket on the bar gets jammed solid, enough that the engine sounds like the chain brake is on and you have to switch off and get the sprocket moving. When this happens the sprocket area of the bar appears to be quite hot. The saw was using half a tank of oil to a tank of gas which seems the norm. I took it back to the dealer who sprayed the oil off the bar and declared it was normal. With the bar removed you can see the oil pumping out. I thought the problem could be a lack of oil so I purchased and installed the bigger oil pump thinking this would be the answer. It now dispeces about 25% more oil but I still have the problem. I am cutting ash currently and have had problems with beech (beech was quite sappy). Tried a new chain and 16 inch bar and the same problem. I think I have the chain tension right, if anything on the loosed side rather than tight. - added a picture of a cut that resulted in one of the nose sprocket jams. Any thoughts? Thanks

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