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Thread: OVERHAUL PROBLEM

  1. 11-19-2014, 02:44 PM #1
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    Unhappy OVERHAUL PROBLEM


    Hi
    I overhauled my 30hp- 2 stroke. The block was machine for oversize pistons. The head was milled just to clean it. Got it all back together.
    When I pull the rope if it hits it stops
    I asked others they said I need an electric starter. I doubled the oil mixture being new rings piston and cylinders.
    Any suggestions?
    Thanks for your suppor. Duck season is only 8 days away
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  2. 11-19-2014, 04:24 PM #2
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    If you mean it fires but won't keep running, you might try retarding the timing a few degree's.
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  3. 11-19-2014, 04:31 PM #3
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    Quote Originally Posted by cray View Post
    If you mean it fires but won't keep running, you might try retarding the timing a few degree's.
    What I mean is when you pull the rope when it fires the engine completely stops. It will almost pull the handle out of my hands.
    I've wondered about the timing my self.
    Can you advise on how to retard the timing?
    THanks
    FIN
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  4. 11-19-2014, 05:23 PM #4
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    If you have a manual follow the procedures for doing a link and sync. It must be done in the exact steps given.
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  5. 11-19-2014, 06:02 PM #5
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    I may have put the flywheel from my other 30hp on cause it looked better it was a ns30a3 also.
    How do you tell if the wires are backwards?
    THe flywheel key is good.
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  6. 11-19-2014, 06:05 PM #6
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    Quote Originally Posted by Barnacle Bill View Post
    If you have a manual follow the procedures for doing a link and sync. It must be done in the exact steps given.
    Its a ns30a3 I have no manual on link and sink. I only have a parts manual
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  7. 11-19-2014, 07:02 PM #7
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    Found the problem When I rebuilt the engine I noticed the magneto assemply from my other ns30a3 looked newer. I put it on but everything was 45* off.
    The exciter coil, the trigger coil and the alternatior. Is it possible to simply move them on the coil plate assemply to the right place 45*. Or will the coil plate assembly have to be changed too?
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  8. 11-19-2014, 08:05 PM #8
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    If it was me I would put the original stuff back on and get it running. Then I would look up the info on setting the timing. If you had all that stuff off it's not going to be timed right even though it may run ok. If you don't you may have just wasted the money and time you spent on the rebuild. Make sure you have the flywheel torqued down properly or it could turn on the crank.
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  9. 11-19-2014, 08:09 PM #9
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    Name: 035.jpg Views: 320 Size: 69.8 KBFound the problem When I rebuilt the engine I noticed the magneto assemply from my other nbs30a3 looked newer. I put it on but everything was 45* off.
    The exciter coil, the trigger coil and the alternatior. Is it possible to simply move them on the coil plate assemply to the right place 45*. Or will the coil plate assembly have to be changed too?
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  10. 11-19-2014, 08:10 PM #10
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    I rebuilt the engine last year and left the old mag in my other boat which had water in it. I may be able to dry it and use it.
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