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Hi Mate, Got the same problem, Have found the service manuals for the TS400, and looking at it I think it's a problem with the throttle rob connecting to the carb. Did you manage to fix it ? CheersSteve
Racing on a 2 cycle engine is usually a sign of a lean condition. It could be caused by a few different things including a bad crank seal or a torn intake manifold as some are made out of rubber. I would remove the cutter arm then pull the muffler to inspect the cylinder and piston. If they are scored it will be a costly repair.
The ts400 has 2 adjustment screws. First pop out the rubber gromet to see the screws. The one on the left is the mixture, the one on right is the idle Turn the idle screw in a coup[le turns, this will help the saw run a little fast Now screw the mixture screw in till it bottoms .now back it out 1 and a half turn. Press the decom and pull it thru with the , the choke on a couple times, now pull up onthe decom. Try to start it. when it starts, let it runat a fast speed moving the choke off a click or two when the motor warms up, idle the engine as muchas possible, then adjust the mixture screw in or out torun the best. Squeeze the trigger if engine faulters, it's to lean, back mixture screw out slowly, till it suits you. Reinsert the gromet.
You should go to a Stihl dealer and ask for the belt for a TS 400 Cut Off Saw. The belt is ribbed, you should only put on a Stihl part to replace the belt and make sure the belt is under the correct tension. When you go to the Stihl dealer you can ask them to show you how to make sure the belt is under the correct amount of tension.
Hello. No, the oil mix is designed to do all that is necessary. Stihl 50:1 two stroke engine oil or equivalent is recommended for proper operation, cheap oil does not have the additives needed too keep rings free and inhibit carbon build-up. Also do not use BIA or TCW rated oils, or any others with duel purpose ratings.