Chainsaw Repair

In the past, for many years, the braking point between two stroke and four (back and forth) was the magic reference point by which I set the high speed needle valve on two strokes. However, as time has passed, the breaking point between two stroke and four stroke has become less defined. Us old timers still identify it without problem but the new folks are having a harder time.

In addition, the manufacturers have added limited coils and the coil's limiting action sounds very much like four stroke'n, especially to a new guy. Therefore, the current trend is to set the chainsaws with a tachometer to a specified free running top rpm. Tachometers are closer to $100.