1965 Mercury 900 90 hp no spark

[clueless75]

You would need to crank the engine to check for voltage as the current comes from the magnetos when the engine is turning over, I believe

 

[dan2744]

Okay cool, thanks guys.

 

[dan2744]

When I put the distributor housing back on, does that just go on one way? Does it just slip right back on?

 

[racerone]

??---No magnetos on this motor.---Just 2 sets of points , 2 coils and condenser.

 

[dan2744]

Yea, it has a stator/alteenator, correct?

 

[dan2744]

My engine is tilted all the way up, will that engage the mercury switch?

 

[dan2744]

Where exactly is the Mercury switch and what does it look like? Does the distributor housing only go on one way or is there a way to put it on wrong?

 

[merc850]

Look at the diagram I posted it shows the mercury switch connected to the white and brown wires, at full tilt it will kill the ignition; the distributor cam only fits one way look up into the housing and match the position. Yes it has an alternator for charging the battery only, not ignition.

 

[dan2744]

Well crap, it is definitely engaged then.

 

[dan2744]

I guess I learned something at least, now I hope that this goes back together smoothly.

 

[turtles11756]

the red plastic fitting holds a carbon brush it will not spark without it.post serial # of motor. two sets of points that need to be checked and gapped correct with new condensers rotor was held on with locktight. don't break it. marine engine for parts diagram

 

[dan2744]

Well, I put it back together, I hope the distributor housing went on okay it seemed to mount up easy without forcing it so it should be right?

 

[dan2744]

And......She Fires! Haven't gotten to idle yet but there is definitely spark now!