Stevens 8 Spark Tester #S48

Stevens S48 Engine Tools Primarily, an eight-wire spark checker for 6 & 8 cylinder use, is actually two identical four-wire checkers which couple together. Coupling or separating is done quickly with one wing nut (loosened but not removed) and one slot per half. Each half can be used separately on smaller engines, so it's ready to work on a single cylinder, an eight, and everything in between.…