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I have a 4 stroke outboard, 15hp motor. I had it running a…

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I have a 4 stroke...
I have a 4 stroke outboard, 15hp motor. I had it running a week ago with no problem and then it just stopped working. New gas, new plugs and it won't even try to start were pulled. It is like the safety switch is not working or similar. Where do I go from here to find the problem. It only has 30 hours on it total
Submitted: 2 months ago.Category: Marine Electronics
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5/26/2018
Marine Electronics Expert: Jason, Marine Mechanic replied 2 months ago
Jason
Jason, Marine Mechanic
Category: Marine Electronics
Satisfied Customers: 18,239
Experience: Degree in Marine Technology, Also Certified with Mercury Marine, MCM, MIE, VP, Yamaha, Honda, Suzuki
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Good morning, my name is ***** ***** am I speaking with? I read what you wrote but I do not see any kind of model information. Which engine are you asking about? Who makes it? Do you have a model or serial number on it?

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Customer reply replied 2 months ago
Hi Matt here. Tohatsu mfs15b2
Customer reply replied 2 months ago
Does that help?
Marine Electronics Expert: Jason, Marine Mechanic replied 2 months ago

HI Matt. Sorry for the wait, I was on the phone with another customer, and I have to make 2 more calls before I can get back here. It might be an hour or so (holiday weekend, very busy) but I will be back as soon as I can.

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Customer reply replied 2 months ago
Ok
Customer reply replied 2 months ago
Any updates?
Customer reply replied 2 months ago
Hello
Marine Electronics Expert: Charles, Marine Tech replied 2 months ago
Charles
Charles, Marine Tech
Category: Marine Electronics
Satisfied Customers: 4,922
Experience: US Navy (Ret) I have been installing Marine Electronics for over a decade now.
Verified

Hello Matt, my name is***** will assist you from here.

Locate the 2 wires that come from the kill switch on the cowling, disconnect one of them and see if the engine will not start. If it does, make sure that this switch is fully in the on position. If it is, then the switch is bad.

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Customer reply replied 2 months ago
Ok. Disconnected one, tried to start and still nothing
Customer reply replied 2 months ago
Hello?
Marine Electronics Expert: Charles, Marine Tech replied 2 months ago

Have you verified that there is spark to the cylinders yet?

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Customer reply replied 2 months ago
I have not but I changed the spark plugs
Marine Electronics Expert: Charles, Marine Tech replied 2 months ago

Knowing if it has spark will point us in the correct direction. Pull one of the plugs and ground it to the block, or use an adjustable gap spark tester. Then pull the start cord and see if there is spark to the plug.

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Customer reply replied 2 months ago
just put the spark gapper into the plug when it is connected to the plug wire? What am I looking for exactly?
Marine Electronics Expert: Charles, Marine Tech replied 2 months ago

Pull the start cord and see if there is a spark in the tool. Make sure that the tool is connected to a clean engine ground for it

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Customer reply replied 2 months ago
No spark. What next
Customer reply replied 2 months ago
Hello?
Marine Electronics Expert: Charles, Marine Tech replied 2 months ago

Ok, with no spark you will need a multimeter to do some testing. Do you have one?

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Customer reply replied 2 months ago
No sadly I don't. Is this beyond diy territory now?
Marine Electronics Expert: Charles, Marine Tech replied 2 months ago

No, just need the meter to test the voltage to see which part went bad, the stator or the pulser coil. My guess would be the pulser coil. It is more common that the stator or ECU.

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