Re: Calls for UL77V Can I use QL77JC4?
SparkRoost..... Use the Champion QL77JC4 plugs with great ease of mind, and set the gap to .040 . It is a alternate plug recommended by OMC for that engine, to be set at that gap setting.<br /><br />The UL77V plugs work in many engines but unfortunately, regardless of the "77" rating, they have no real heat range and are quite prone to fouling.