Hi guys,
Just recently purchased an HRU194 with a GXV120 Eng. It blows a puff of blue smoke on a cold start. Is this normal for these engines or do they have valve stem seals which may need replacing?
Once it's started it runs beautifully and blows no smoke at all.I've put in a new airfilter and adjusted the valve clearances and I'll change the oil next time it's been running and is nice and hot. What oil should I be using?