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  1. Replies
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    164

    Re: limited RPM 3,800

    perfect 115 - 120 all 6 cylinders, spark in all 6 cylinders, and to test the WOT timming I turned the limit screw in and out 2 to 3 turns each way and no difference same RPM. its got me all...
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    164

    limited RPM 3,800

    good morning my problem is that I had a bad switch box to start, I changed it to find that the high speed stator side was also burnt out limiting the engine only to 1,000 rpm then stalling. with the...
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    3,500 max rpm

    Hello I used to have 4,800 to 5,200 rpm before replacing my stator & both switch boxes, now I only get 3,500 rpm. is there anything I am over looking all my DVA readings are good and the bias is good...
  4. Re: mariner switch box circuit repair, id parts on pic

    to be honest DB ELECTRICAL has the switch boxes for, well I paid 38.99 for my 135 HP mercury. there after market but guaranteed to be if not the same or better than original parts. but you should...
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    1,445

    Re: bad switch box

    faztbullet switch box stop circuit inner box 400 volts
    outer box 400 volts
    Stator low speed inner box 300 volts
    ...
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    369

    Re: stator size

    i think the bias circuit is in both the switch boxes and i guess i need to do the test on both boxes is this correct

    Thanks Bob
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    369

    Re: stator size

    faztbullet on the bias test should I do it with the switch box i know is burnt out, or install the new switch box first and test the new one or will i burn the new one out. and if the bias test is...
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    Re: bad switch box

    faztbullet I guess my next step will be:

    1) replace the bad switch box
    2) test the voltage to all (6) coils
    3) test the stator out put with a DVA tester
    4) and last do a switch box bias test...
  9. Replies
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    1,445

    bad switch box

    does anyone know what the major cause to burn out a switch box, I have a 1990 135 HP mercury and 5 years ago I bought it with a bad switch box, I changed it and now 5 years later I burn another, I...
  10. Replies
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    369

    Re: stator size

    faztbullet could you look at the pictures and see if it is indeed a 40 amp system because I am doing to do a DVA test and the 16 amp and 40 amp are different. I burnt the inner switch box and want to...
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    369

    Re: stator size

    is this the vented fly wheel with the 40 amp stator
  12. Replies
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    369

    Re: stator size

    stator picture
  13. Replies
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    369

    Re: stator size

    the cover over the flywheel has a number of vents & the coils under the flywheel have no plastic there just open copper can pictures be added to this site
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    369

    stator size

    hello I have a 1990 135HP mercury how do I tell if I have a 16 amp or 40 amp stator, the windings are copper and not covered in plastic I believe its a 40 amp but not for shur.

    thanks Bob
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    Re: 3 1/2 HP Mercury Lower unit

    thanks I will try that and thanks for the year 1983, one last question is how do you disconnect the shift rod there is no opening on the side with a rubber cap or the lower unit does not come down, I...
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    671

    3 1/2 HP Mercury Lower unit

    Hello I have a 3 1/2 HP mercury and I think the drive shaft is stuck in the crankshaft, any ideas on how to free this without beating and braking the alummium lower housing.
    I alao can not seem to...
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    353

    3.5 HP lower unit stuck

    Hello I think the drive shaft is stuck in the crank shaft but I don't want to beat in the alummium housing and brake it any other thoughts on how to free this thing up, and I can not seem to be able...
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    4,279

    Re: siezed engine

    My next step is to pull the heads, but I am looking to also make a jig to fit the bolt pattern on the damper and turn the crank shaft that way
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    factory manual

    does anyone know a site for factory marine power engines manuals:

    MOD. NO. MP350ANS
    SER. NO. AN89033612S
    MARINE POWER INC.
  20. Replies
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    Re: siezed engine

    MOD. NO. MP350ANS
    SER. NO. AN89033612S
    MARINE POWER INC.

    Thanks Bob
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