Re: 6hp firing problem
model # 6402 c used my neighbor as a human spark tester and swears it produced a very strong charge. thank you for the quick response.
Unless your neighbor has wired contacts on his center upper and lower teeth, and can hold them steadily apart at the proper gap setting, his efforts and the test in general are void.
Your engine is a 1974 6hp Evinrude with a magneto system. Check the spark using a 1/4" gap setting.
(Spark Tester - Home Made)
(J. Reeves)
You can use a medium size philips screwdriver inserted into the spark plug boot spring connector, then hold the screwdriver shank approximately 7/16" away from the block to check the spark or build the following:
A spark tester can be made with a piece of 1x4 or 1x6, drive a few finishing nails through it, then bend the pointed ends at a right angle. You can then adjust the gap by simply twisting the nail(s). Solder a spark plug wire to one which you can connect to the spark plug boots, and a ground wire of some kind to the other to connect to the powerhead somewhere. Use small alligator clips on the other end of the wires to connect to ground and to the spark plug connector that exists inside of the rubber plug boot.
Using the above, one could easily build a spark tester whereas they could connect 2, 4, 6, or 8 cylinders all at one time. The ground nail being straight up, the others being bent, aimed at the ground nail. A typical 4 cylinder tester follows:
..........X1..........X2
.................X..(grd)
..........X3..........X4
