Reply To: johnson 1963 JW 18 R

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September 18, 2021 at 5:31 am #246838
billw
Participant

    US Member

    Probably a dirty carb. However, verify good strong spark on both cylinders and that the plugs are not in question. (New or known good used.) Those engines WILL run on just one cylinder but stall at lower speeds.

    Long live American manufacturing!