Not getting spark from plugs

[dankfog]

Last time I started the motor it ran fine came out the next day no spark from the plugs what are the quickest and easiest things to check

 

[haventaclue]

If you could post motor and HP,it would help.But first thing to look at would be the kill circuit

 

[dankfog]

Mariner 9.9m
682c S 058438
Made in japan

 

[dankfog]

This is what a guy on this forum said Model number 7010205 makes it to be a 1985

 

[dankfog]

I unhooked the black wire from the kill switch but I'm still not getting any spark at the plugs

 

[dankfog]

Does anyone have a idea what I should try now

 

[haventaclue]

Ok,so really a Yamaha and '85 is correct.Disconnect it at the switchbox.No.31 in this diagram http://www.marineengine.com/parts/mariner-outboard-parts/99c/682032886-and-up-m/cdi-magneto .It should be white as far as I remember.Or the other wire on the kill switch

 

[dankfog]

I tried it it still doesn't get Spark is there a way to test with a voltmeter so you say it's a 85 and its a Yamaha motor

 

[haventaclue]

Yamaha had a deal with Mercury and built outboards for them and marketed them as Mariner.2HP to 60HP two cyl models.If effect the Mariner was older Yamahas painted Mariner colours. 682 tells the HP,C is the model,S is short shaft,058438 say it's '85 manual.
I would start at the plugs with an ohm meter,test plugs cold,though I doubt if the two would fail at same time.
Test plug leads for continuity.Test the coil,here's a link,quicker than me typing http://www.pochefamily.org/outboard/coils.htm .A DVA meter is needed to test the switchbox.
I am assuming it is a C.D.I. magneto and not a flywheel magneto.If it is flywheel,check,clean and gap the points.

9.9C M

682-058031 - 682-067316

1985

 

[dankfog]

Thank you for the info I'll see if I can figure it out thanks again