The tester arrived as promised and looks as advertised. I tested it on my lawn mower and it seems to work fine. I bought it specifically to test a spark on an idle blower. The leaf blower's starting mechanism makes it difficult to pull the rope and watches the tester try to keep the leaf blower from jumping too hard while pulling the rope. The only potential problem I see is that the dipstick that goes from the engine to the trunk doesn't fit snugly (or at least it doesn't in this case), which makes you wonder if the missing spark is faulty ignition. Component or bad connection to tester. With a small, lightweight hand-held pull starter, it may be best to have a second person perform this test.
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