Home › Forum › Ask A Member › Speeditwin 6039 22.5hp only firing on one cylinder › Re: Speeditwin 6039 22.5hp only firing on one cylinder

#55387
bsplit
Participant

    Things went from bad to worse on the Speeditwin. I checked the coil with my Mercotronic….hope I did it right. I grounded one spark plug wire while checking spark on the other, and then reversed the process. My Mercotronic showed spark on both sides, with a hotter spark on the side that was not firing.

    Before checking the coil, I replaced the starboard spark plug wire with a new wire.

    Anyway, I’m now not getting spark on either side. I’m going to let that motor rest….maybe tackle it in a couple of days. It’s a real pain removing and torquing the flywheel. Not so bad getting it off, but with the weird flywheel nut, I had to jury rig a setup to torque it down with my torque wrench.

    Thanks for the help,
    Jim