AaronM Posted September 18, 2008 Share Posted September 18, 2008 Right now I'm working on a '73 Johnson SeaHorse 2hp to get it back up and running. This is my first real motor project and so far, it's the flywheel nut that's been giving me the worst problems. Any tips on getting it off? I don't have a flywheel puller but I'll head off to get a harmonic balancer if that's what it takes. Thanks for any tips! A picture of the culprit Link to comment Share on other sites More sharing options...
Heartman Posted September 18, 2008 Share Posted September 18, 2008 Can't you somehow secure/tie down the flywheel to prevent spinning, then use a 1/2" ratchet and socket to back it off? Link to comment Share on other sites More sharing options...
marine_man Posted September 18, 2008 Share Posted September 18, 2008 I would use a strap wrench (rubber or nylon webbing) and hold the flywheel.That or a air or electric impact should do the trick.marine_man Link to comment Share on other sites More sharing options...
NAMASafetyDirector Posted September 18, 2008 Share Posted September 18, 2008 You may have to do some research or ask a mechanic but I learned the hard way one time working on a chainsaw that the flywheel nut (in that case it was the nut that held the clutch on) was left hand thread! I thought it was just super tight and really reefed on it and ended up stripping it out! Finally realized after that it was a left hand thread. Felt like a dummy afterwards but I guess that's how you learn. Not sure if left hand threads were ever used in this application so hopefully someone could let us know. Link to comment Share on other sites More sharing options...
boatfixer Posted September 19, 2008 Share Posted September 19, 2008 Standard thread, use an impact wrench if possible or strap wrench and breaker bar to remove the nut. Harmonic balencer puller works well to pull the flywheel. Link to comment Share on other sites More sharing options...
AaronM Posted September 19, 2008 Author Share Posted September 19, 2008 Good idea on the strap wrench, I'll look into that. What kinds of stores sell them bigger than 12 inches on the nylon? Link to comment Share on other sites More sharing options...
river runt Posted September 19, 2008 Share Posted September 19, 2008 I used to push rope into the spark plug hole to stop things from turning.I wouldnt use a impact when using the rope. use this at your own risk RR Link to comment Share on other sites More sharing options...
TimR Posted September 19, 2008 Share Posted September 19, 2008 Good idea on the strap wrench, I'll look into that. What kinds of stores sell them bigger than 12 inches on the nylon? I used an old leather belt - worked fine.Tim Link to comment Share on other sites More sharing options...
AaronM Posted September 19, 2008 Author Share Posted September 19, 2008 Alright, finally got the flywheel and nut off! Was excited to look under, see the coils were bad, replace and have a working motor. Instead we were greeted with below: Turns out everything has been replaced before (not sure how recent). I wasn't getting spark, so is there a way to test each component out to see if something failed on me? ***The gap was at about .01 on the points, could that have been the problem? Not being sure on what to do next, we took the powerhead off and inspected the driveshaft. The underside of the powerhead was caked in oil and grease Likewise, the housing and driveshaft (not pictured) were covered The impeller was in perfect condition. Any ideas on what the next step should be? Thanks again for the replies and looking forward to getting this back up and running! Link to comment Share on other sites More sharing options...
boatfixer Posted September 20, 2008 Share Posted September 20, 2008 Point gap is .020, Reset them and clean them with a dollar bill. Double check for cracks on the coil. Link to comment Share on other sites More sharing options...
AaronM Posted September 20, 2008 Author Share Posted September 20, 2008 Gap is reset and cleaned. No cracks on the coil. Any idea what to do next? Link to comment Share on other sites More sharing options...
boatfixer Posted September 20, 2008 Share Posted September 20, 2008 The condenser could be bad, check for wore spots on the plug wire where it could be sparking to ground or an open in the plug wire. There really isn't much at all to that system. Link to comment Share on other sites More sharing options...
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