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    diagnose broken lower (clutch) shaft - 1957 7.5hp

    I recently rebuilt the lower unit, magneto, and carb on a non-working 1957 7.5hp. After reassembling lower unit the driveshaft turned but hard. Other (smarter) members advised this shouldn't be the case so I pulled it apart again, visually checked everything seem to align and mesh properly...
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    1957 7.5hp AD-11 starts but won't draw fuel…troubleshooting

    Not sure proper posting etiquette but I'm having a very similar issue to the person on this recent post (linked below) but that post didn't seem to get resolved. So rather than hijack that I thought I should start new. I have great spark, newly rebuilt carb (float checked, ok), new impeller...
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    Tap and die approach for Vintage OMC

    As I move through the carb>powerhead>magneto>lower unit on my two vintage (late 50s) OMCs I've been finding several bolts/threads in need of TLC: gunked up, rough, and now a lower drain plug looks cross-threaded... On the 'cheap' - considering this and an old Lawnboy are the extent of my...
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    Lower unit on a 1957 7.5hp - advice?

    I'm trying to get running a 1957 7.5hp seahorse AD-11. First time working on an outboard. I've got good spark and compression now, so moving on to the lower unit. What I know: - It isn't from the AD-11. Is there a way to i.d. it? Or is it unimportant because if the housing fits the AD-11, does...
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    1957 Johnson 7.5 AD-11 starting restoration

    I tracked down and bought my grandfather's '57 7.5hp seahorse! I'm digging in with hopes it can be brought back to life. First time working on an outboard and I've read 50+ good posts on this site, yet questions are piling up. Probably deserves multiple posts (?) but here's where I'm at. All...
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