I had installed a new short block on my mower also a new carburetor and still my mower would not run properly, So I purchased a new aftermarket coil and still my mower ran bad it popped spit and sputtered and would not rev up properly. So I purchased the original OEM coil which is made in Germany, And when I installed it my mower came back to life. I can't say enough about this coil.
Only buy the original coil for your Duroforce Lawn Boy mower.