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the problem isnt always if the blades are sharp, its probably the angle they are at. If you bang the auger down on the ice much at all then it bend the blades and if they get bent the slightest amount they wont cut
i highly doubt its the clutch after 2 years. check your blades!!
If the engine idles and the auger does not spin then the clutch is not hanging up.If the engine idles and the auger is spinning then the clutch is hanging up.If the engine revs excessively while drilling and the auger quits turning then it is the clutch.If the auger quits turning and it bogs the engine down like it is pulling more than a full load then it is not the clutch.