Re: 1952 Johnson 25HP (RD-13) crank seal? Home › Forum › Ask A Member › 1952 Johnson 25HP (RD-13) crank seal? › Re: 1952 Johnson 25HP (RD-13) crank seal? david-bartlettReplies: 1204Topics: 97 June 9, 2018 at 12:35 am #77685 quote jpatti75: When properly tuned, they start great. Mine starts in 2 pulls cold, and one pull all day after that! The old style recoil doesn’t give much mechanical advantage though. Man, these motors sure give your shoulder a work out trying to start them. JP