Chainsaw Repair

For others reading this that do not have a points type ignition, these figures and statements may not be correct? The reason being that the circuitry involved to eliminate the points will confuse the issue especially on the primary.

With a non points type coil, it almost gets down to either the coil works or it doesn't. This usually amounts to making sure the coil has a very good connection to ground, to remove the switch wire from the coil, and to examine the high voltage spark plug wire very carefully.

Also the newer coils are often RPM limiting types and this involves another secondary winding that is reverse wound as a bucking coil. At higher rpms, it will make enough energy to reduce the spark.