Anordning vid förbränningsmotordrivet redskap med s.k. riggrör, exempe lvis en röjsåg

摘要

Arrangement in an engine powered machine having a so-called frame tube - e.g. a clearing saw - where one end of the frame tube is connected with the combustion engine (10) while the other end has a tool (13) and where the frame tube (11) includes a drive shaft (14) transmitting the drive power from the engine to the tool. The frame tube is provided with one or more inlet and outlet openings (22 and 25 respectively) for the exhaust fumes from the combustion engine.