1993 magnum 40 mariner lost spark

[RICKYC53]

1993 mariner magnum 40 inline 4 cly serial number od259515 was running great and just died found it to have lost spark to all cylds . i put a new triger in it hoping that to be the problem . didnt fix it . put a diferent switch box in it . didnt fix it . new to forum , i tried searching didnt find anything . it has a black stator in it 398-818535a13 not sure weather it is a 9 amp or a 16 it ohms close to being a 9 amp ...only between red and red/white i read 94 ohms instead of the 56-76 the book says is this it ? any ideas ???<br />thanks in advance

 

[AMD Rules]

Re: 1993 magnum 40 mariner lost spark

Assume you've checked to make sure your kill circuit or mercury tilt switch are not the problem?

 

[RICKYC53]

Re: 1993 magnum 40 mariner lost spark

havent found the murcury tilt switch ... do they all have them ?? we walked thru the kill circuit steps in the book and it checked good ... can go back again

 

[AMD Rules]

Re: 1993 magnum 40 mariner lost spark

It should have a mercury switch. Is shows in in the schematic, but I'm not certain where it mounts. Maybe under the electrical box. Typically its mounted at about 45°.... just smaller than an AA battery. Should have one wire connection on the end.

 

[Laddies]

Re: 1993 magnum 40 mariner lost spark

Your stator is a 9 amp. Just disconnect the blk/yellow wire at the switch box to make sure there is not a short in the wiring harness or mercury switch

 

[RICKYC53]

Re: 1993 magnum 40 mariner lost spark

yes we pulled the yellow /black wires from switch box ...still no luck ... will this also bypass the murcury switch ?? ..also .. the different switch box i installed has orange post where the other one (yellow black) was ... i just hooked it up to yellow/black wires . all other terminals was marked the same

 

[RICKYC53]

Re: 1993 magnum 40 mariner lost spark

 

[RICKYC53]

Re: 1993 magnum 40 mariner lost spark

went back thu it . checked fire with timing light instead of meter ...had fire with black wires off . tracked it down to kill circuit in remote start loom . just left the one wire off switch that goes to it ... can still kill it at switch on tiller handle...thanks to all for the help ... does anyone have an oppinionon the red - red/white stator reading of 95 ohms instead of 56-76 ohms ... is this something to keep an eye on ??? how about the conversion to a red stator is that something that a person ought to look into ??is this paticular motor fairly dependable ... grew up in evenrude country ... first mercury i ever owned . thanks for help and any more info you can share

 

[saumon]

Re: 1993 magnum 40 mariner lost spark

Great reputation. A bit hard on gas, but very smooth and dependable

 

[Dan47]

Re: 1993 magnum 40 mariner lost spark

This is great info. I am experancing the same problem with the same motor. I took it out today for the first time in three years (New gas). It ran great for approximotly 20 minites when my motor just shuttered and shut down. Thanks for the tips, I'll know more tomorrow!

Thanks Again,
Dan47

 

[Dan47]

Re: 1993 magnum 40 mariner lost spark

Can anyone tell me where to find an on-line manual for a Mariner Magnum
40HP 1993?

Thanks,
Dan47