Hey everyone, during the week i have found 4 brush cutters in hard rubbish. 2 old ryobi's, one Mc Culloch eager beaver 200A and a Jonesred GT 21A. all four have grease and oil on the crankcase, cylidner, carby and exhaust. what could have caused this? should i try and start some now or pull them all apart to check out for any problems? ( i have started to pull apart the green ryobi)

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Cheers