4 stroke chainsaw

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The Duke waxing philosophical:



This Senix saw looks to be quite different from the orange/grey Ferex saw. The Senix has a 'normal' 4-stroke wet sump crankcase, a conventional bar oil tank and pump system, and has three filler caps; gasoline, crankcase oil, and bar oil.

The Ferex has that mystery crankcase-oil-for-the-bar system (and only has two filler caps; gasoline and oil). Guessing it has total loss oil injection for the engine, and a crankcase drain/check valve setup to feed accumulated crankcase oil to the bar..............like the failed OilMac system that McCulloch tried in the late 1950's. Goofy.....
 
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