thanks, i tried to measure the resistance according to specs but im not that handy with a meter, it says 2.5 ohms on a 20k scale i believe the amount should be 2,500 to 5,000 ohms to be the correct amount is this amount that im showing say that the coil is ok?
the instructions say from the positive lead of the spark plug and the negative lead to the engine ground should be from 2500 to 5000 and i am getting 2.5 on the 20 k scale
The only check you can do is disconnect the ground (kill) wire, take the spark plug out, attach it to the spark plug wire and hold it to ground. Now carefully spin the flywheel as fast as you can by hand. Careful not to pinch your fingers. If you get no spark, bad coil. The tester for coils costs a lot more than I will spend, very few places even have one.
i put a brand new coil on today, still no spark. i put it on kept all of the kill wires off and no spark:frown:
where would the cdi module be? under the flywheel?
What about the Woodruff key on the crankshaft/flywheel?
If it shears, you get no spark.
Hitting rocks, stumps, roots, big sticks, etc, will cause damage to the key.
Do both the flywheel and the crankshaft turn when you pull the starter cord? If not, you likely have a sheared woodruff key.
Sheared woodruff keys are a common cause of "no spark" on walk behind mowers.
Credit card too thick. .010". Also there is no woodruff key connecting the crank and the flywheel, it should be a softer square key. Also, you must torque the flywheel nut properly, or you will shear the flywheel key while trying to start. Again, you must set the coil air gap at .010.
