As I mentioned in an earlier thread, a pretty new (15 or so tanks) MS 280 is giving me and the dealer fits.
First, thanks to Lakeside for earlier comments and suggestions, but the saw just isn't working right despite the dealer's efforts to fix it. It exhibits the same problems now that it did initially. Idles fine before a cut. Pull the trigger and it accelerates quickly and smoothly and with normal time to stop chain rotation upon deccelaration. Basically, normal behavior before cut. Make a couple of cuts and everything changes. After that, when I pull the trigger to start the next cut (not yet into the wood), it either dies or drops in rpm. In subsequent cut, chain rotation continues for way too long as the saw drops to idle.
Shop has been very nice (and so have I but patience is running out). First trip, checked crankcase for leak and adjusted carb, second visit (I am 60 miles from shop), replaced carb and pressure checked crankcase again, also tank venting. Third visit, rechecked pressure check of crankcase and vacuum tested fuel system. Decided that it might be electronic ignition module. Replaced that. Did a couple of test cuts, said that it seems to be okay but let them know after using it a while. Net result, it still ain't running right and has exactly the same behavior now as it did before the 3 trips to the shop.
All the obvious and not very obvious possibilities have been checked.
Besides magic, what else could be going on? At what point does the dealer give up and send the damned thing back to Stihl? At what point should the customer's mood change?
First, thanks to Lakeside for earlier comments and suggestions, but the saw just isn't working right despite the dealer's efforts to fix it. It exhibits the same problems now that it did initially. Idles fine before a cut. Pull the trigger and it accelerates quickly and smoothly and with normal time to stop chain rotation upon deccelaration. Basically, normal behavior before cut. Make a couple of cuts and everything changes. After that, when I pull the trigger to start the next cut (not yet into the wood), it either dies or drops in rpm. In subsequent cut, chain rotation continues for way too long as the saw drops to idle.
Shop has been very nice (and so have I but patience is running out). First trip, checked crankcase for leak and adjusted carb, second visit (I am 60 miles from shop), replaced carb and pressure checked crankcase again, also tank venting. Third visit, rechecked pressure check of crankcase and vacuum tested fuel system. Decided that it might be electronic ignition module. Replaced that. Did a couple of test cuts, said that it seems to be okay but let them know after using it a while. Net result, it still ain't running right and has exactly the same behavior now as it did before the 3 trips to the shop.
All the obvious and not very obvious possibilities have been checked.
Besides magic, what else could be going on? At what point does the dealer give up and send the damned thing back to Stihl? At what point should the customer's mood change?