Mercury 850 85hp. Good engine or stay away?

Joined
Feb 2, 2020
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9
Attól függ, hogy a gépet gondozták-e, vagy csak a tulajdonában volt, a kettő nem ugyanaz...

It depends on whether the machine was properly maintained or simply owned—the two are not the same...
 
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Bman2895

Petty Officer 2nd Class
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Feb 11, 2016
Messages
187
If you left the rectifier (serves as voltage regulator on that motor) unconnected to the battery but connected to the stator, it will blow.
So I replaced that wire however I didn't wire it into the harness constant 12. I ran the wire from the back of the regulator to the big lead coming into the starter solenoid. That should be all right ?
 

Chris1956

Supreme Mariner
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Mar 25, 2004
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28,985
I am not sure I understand your post. Generally, if the rectifier is connected to the 2 stator wires, but not ground or +12VDC, it will blow.
 

Bman2895

Petty Officer 2nd Class
Joined
Feb 11, 2016
Messages
187
I am not sure I understand your post. Generally, if the rectifier is connected to the 2 stator wires, but not ground or +12VDC, it will blow.
So I reconnected the positive wire for the rectifier. Normally it joins into the engine harness. Into the red wire that feeds the trigger box. A constant 12v. Instead of connecting it to the harness there like the factory was. I ran the 12v from the rectifier to the stud on the starter solenoid where the 12v battery cable comes in. So it's still connected to a 12v constant wire.
 

Chris1956

Supreme Mariner
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Mar 25, 2004
Messages
28,985
Gee, that should work. You might test the diode with an ohmmeter, to make sure it is still good. If not, Amazon likely has a 15 to 25A generic full wave rectifier that will replace it for small $$. It makes no sense to buy an inferior OEM rectifier for large $$.
 
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