GAVolunteer
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- Jun 28, 2013
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Troy Bilt Chipper/Shredder -47279 1993 model
Tecumseh H50-65582U Ser # 3069D 5 HP Horisontal Engine
Working on a friends chipper. The initial problem was that when the engine was running and especially when the engine was shutting off, oil was leaking out of the breather hose which is attached to the valve cover on the breather. I removed the valve cover, breather body and breather element. The tiny hole in the breather body was clogged which was causing oil to collect in the breather body and then come out of the breather hose, There are no problems with oil leaking out of the breather hose now.
The oil was also very dirty, which I changed. The dirty oil may have caused the breather to get clogged.
However, after I run the engine for several minutes and shut it off, quite a bit of light gray smoke comes out of the muffler as the engine is stopping and the chipper/shredder disc is stopping (which takes longer to stop than a mower blade). I do not know if the engine was doing this before I cleaned the breather.
It appears to me that as the engine is stopping, oil from the behind the breather and around the valve springs may be seeping back through the exhaust valve and into the hot muffler which then burns off the oil. But that is just a guess. I do not see any smoke when the engine is running … only after the engine has shut off and is stopping.
Is this an indication that the breather is still not working correctly and needs to be replaced? What else would cause this problem?
Thanks
Robert
Tecumseh H50-65582U Ser # 3069D 5 HP Horisontal Engine
Working on a friends chipper. The initial problem was that when the engine was running and especially when the engine was shutting off, oil was leaking out of the breather hose which is attached to the valve cover on the breather. I removed the valve cover, breather body and breather element. The tiny hole in the breather body was clogged which was causing oil to collect in the breather body and then come out of the breather hose, There are no problems with oil leaking out of the breather hose now.
The oil was also very dirty, which I changed. The dirty oil may have caused the breather to get clogged.
However, after I run the engine for several minutes and shut it off, quite a bit of light gray smoke comes out of the muffler as the engine is stopping and the chipper/shredder disc is stopping (which takes longer to stop than a mower blade). I do not know if the engine was doing this before I cleaned the breather.
It appears to me that as the engine is stopping, oil from the behind the breather and around the valve springs may be seeping back through the exhaust valve and into the hot muffler which then burns off the oil. But that is just a guess. I do not see any smoke when the engine is running … only after the engine has shut off and is stopping.
Is this an indication that the breather is still not working correctly and needs to be replaced? What else would cause this problem?
Thanks
Robert